UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

 

**FORM N-Q**

**QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED**

**MANAGEMENT INVESTMENT COMPANY**

**_______________________________**

Investment Company Act file number 811-06071

DWS Institutional Funds

(Exact name of registrant as specified in charter)

 

345 Park Avenue

New York, NY 10154-0004

(Address of principal executive offices)             (Zip code)

 

Paul Schubert

345 Park Avenue

New York, NY 10154-0004

(Name and address of agent for service)

Registrant's telephone number, including area code:(212) 454-7190

Date of fiscal year end:12/31

Date of reporting period:03/31/08

 

ITEM 1. SCHEDULE OF INVESTMENTS

 

| Investment Portfolio | **as of March 31, 2008 (Unaudited)** |
|----------------------|--------------------------------------|

 

 

**Cash Management Fund Institutional**

Cash Management Fund Institutional (the “Fund”) is a feeder fund that invests substantially all of its assets in a “master portfolio”, the Cash Management Portfolio (the “Portfolio”) and owns a pro rata interest in the Portfolio’s net assets. At March 31, 2008, the Fund owned approximately 8% of the Portfolio’s outstanding interests. The Portfolio’s            Schedule of Investments is set forth below.

 

 

|                                | **Principal**

**Amount ($)**                    |        | **Value ($)** |
|-------------------------------------|--------------------------------------------------|-------------|---------------|
|                                     |
|                                | **Certificates of Deposit and Bank Notes 15.7%** |        |
| ABN AMRO Bank NV:                   |                                             |
|                                | 2.525%, 6/18/2008                                |        | 121,500,000   |   | 121,501,308 |
|                                | 4.45%, 4/9/2008                                  |        | 67,000,000    |   | 67,001,178 |
| Banco Santander SA:                 |                                             |
|                                | 3.91%, 5/16/2008                                 |        | 145,000,000   |   | 145,005,368 |
|                                | 4.36%, 4/11/2008                                 |        | 133,250,000   |   | 133,252,197 |
| Bank of America NA, 4.0%, 5/15/2008 |                                             | 120,000,000 |          | 120,163,878 |
| Bank of Scotland PLC:               |                                             |
|                                | 3.02%, 5/15/2008                                 |        | 187,250,000   |   | 187,250,000 |
|                                     |                                                  |             |               |  |  |  |  |

 

 

 

|                                                                  | 4.5%, 11/19/2008           |              | 120,000,000 |        | 120,000,000 |
|-----------------------------------------------------------------------|----------------------------|-------------------|-------------|-------------|-------------|
|                                                                  | 4.77%, 4/25/2008           |              | 155,000,000 |        | 155,000,000 |
|                                                                  | 4.91%, 4/23/2008           |              | 35,800,000  |        | 35,801,267  |
|                                                                  | 4.93%, 10/9/2008           |              | 155,000,000 |        | 155,000,000 |
| Bank of Tokyo-Mitsubishi-UFJ Ltd., 3.11%, 4/8/2008                    |                       | 300,000,000       |        | 300,000,000 |
| Barclays Bank PLC:                                                    |                       |
|                                                                  | 4.72%, 4/30/2008           |              | 60,000,000  |        | 60,000,000  |
|                                                                  | 4.72%, 5/1/2008            |              | 42,500,000  |        | 42,560,674  |
|                                                                  | 5.2%, 4/9/2008             |              | 200,000,000 |        | 200,000,000 |
| BNP Paribas, 4.4%, 7/7/2008                                           |                       | 162,750,000       |        | 162,754,290 |
| Calyon:                                                               |                       |
|                                                                  | 4.03%, 7/14/2008           |              | 110,750,000 |        | 110,750,000 |
|                                                                  | 4.38%, 4/10/2008           |              | 58,700,000  |        | 58,704,780  |
| Canadian Imperial Bank of Commerce:                                   |                       |
|                                                                  | 3.06%, 4/1/2008            |              | 9,000,000   |        | 9,000,000   |
|                                                                  | 3.11%, 4/8/2008            |              | 200,000,000 |        | 200,000,000 |
| Citibank NA, 3.01%, 5/15/2008                                         |                       | 254,000,000       |        | 254,000,000 |
| Credit Agricole SA:                                                   |                       |
|                                                                  | 3.1%, 5/2/2008             |              | 41,200,000  |        | 41,200,705  |
|                                                                  | 4.61%, 4/7/2008            |              | 105,000,000 |        | 105,000,173 |
| Credit Industriel et Commercial:                                      |                       |
|                                                                  | 4.135%, 4/15/2008          |              | 37,600,000  |        | 37,600,072  |
|                                                                  | 4.615%, 4/7/2008           |              | 52,000,000  |        | 52,000,043  |
| Credit Suisse, 4.305%, 7/8/2008                                       |                       | 100,000,000       |        | 100,000,000 |
| General Electric Capital Corp., 3.5%, 5/1/2008                        |                       | 10,000,000        |        | 10,003,831  |
| JPMorgan Chase Bank NA:                                               |                       |
|                                                                  | 2.8%, 8/11/2008            |              | 30,000,000  |        | 30,000,000  |
|                                                                  | 3.05%, 4/25/2008           |              | 22,500,000  |        | 22,500,000  |
|                                                                  | 4.75%, 6/10/2008           |              | 124,550,000 |        | 124,550,000 |
| Metropolitan Life Global Funding I, 3.8%, 1/20/2009                   |                       | 91,500,000        |        | 91,500,000  |
| Mizuho Corporate Bank Ltd.:                                           |                       |
|                                                                  | 3.05%, 5/14/2008           |              | 91,000,000  |        | 91,015,530  |
|                                                                  | 3.11%, 4/8/2008            |              | 95,000,000  |        | 95,000,000  |
|                                                                  | 3.9%, 4/17/2008            |              | 158,000,000 |        | 158,003,477 |
| National Australia Bank Ltd., 3.08%, 4/4/2008                         |                       | 40,000,000        |        | 40,000,066  |
| Natixis, 2.85%, 6/12/2008                                             |                       | 125,000,000       |        | 125,000,000 |
| Norinchukin Bank Ltd., 4.37%, 4/11/2008                               |                       | 100,000,000       |        | 100,000,000 |
| Royal Bank of Scotland PLC, 3.1%, 6/25/2008                           |                       | 135,000,000       |        | 135,015,409 |
| Societe Generale, 3.99%, 4/15/2008                                    |                       | 150,000,000       |        | 150,005,199 |
| Toronto-Dominion Bank:                                                |                       |
|                                                                  | 2.68%, 8/18/2008           |              | 25,000,000  |        | 25,024,756  |
|                                                                  | 3.02%, 5/2/2008            |              | 10,000,000  |        | 10,000,569  |
|                                                                  |                       |              |        |        |        |
| UBS AG:                                                               |                       |
|                                                                  | 3.0%, 8/1/2008             |              | 200,000,000 |        | 200,000,000 |
|                                                                  | 3.33%, 5/23/2008           |              | 50,000,000  |        | 50,000,000  |
|                                                                  | 4.255%, 7/9/2008           |              | 160,000,000 |        | 160,225,552 |
|                                                                  | 4.3%, 7/8/2008             |              | 160,000,000 |        | 160,000,000 |
|                                                                       |
| **Total Certificates of Deposit and Bank Notes**(Cost $4,751,390,322) |                       | **4,751,390,322** |
|                                                                  | **Commercial Paper 42.3%** |              |
| **Issued at Discount** 39.0%**                                        |                       |
| AIG Funding, Inc., 2.85%, 4/4/2008                                    |                       | 9,500,000         |        | 9,497,744   |
| Alcon Capital Corp.:                                                  |                       |
|                                                                  | 2.49%, 12/17/2008          |              | 100,000,000 |        | 98,201,667  |
|                                                                  | 3.9%, 5/22/2008            |              | 4,000,000   |        | 3,977,900   |
|                                                                       |                            |                   |             |             |             |  |  |  |

 

 

 

|                                                  | 4.4%, 5/21/2008   |        | 71,700,000  |        | 71,261,833  |
|-------------------------------------------------------|-------------------|-------------|-------------|-------------|-------------|
|                                                  | 4.44%, 5/22/2008  |        | 16,000,000  |        | 15,899,360  |
| Alpine Securitization Corp., 2.76%, 4/24/2008         |              | 140,000,000 |        | 139,753,133 |
| Amsterdam Funding Corp., 2.75%, 4/21/2008             |              | 150,000,000 |        | 149,770,833 |
| Apreco LLC, 2.75%, 4/25/2008                          |              | 150,000,000 |        | 149,725,000 |
| AstraZeneca PLC:                                      |              |
|                                                  | 2.88%, 8/20/2008  |        | 48,550,000  |        | 48,002,356  |
|                                                  | 3.67%, 7/17/2008  |        | 24,310,000  |        | 24,044,825  |
|                                                  | 3.965%, 7/25/2008 |        | 99,000,000  |        | 97,746,069  |
|                                                  | 4.205%, 6/3/2008  |        | 71,900,000  |        | 71,370,906  |
|                                                  | 4.7%, 5/14/2008   |        | 82,000,000  |        | 81,539,661  |
| AT&T, Inc., 2.23%, 5/23/2008                      |              | 130,000,000 |        | 129,581,256 |
| Atlantic Asset Securitization Corp., 2.82%, 4/15/2008 |              | 225,000,000 |        | 224,753,250 |
| Bank of America Corp., 4.865%, 4/11/2008              |              | 198,000,000 |        | 197,732,425 |
| Bank of Scotland PLC, 2.55%, 6/18/2008                |              | 100,000,000 |        | 99,447,500  |
| Cancara Asset Securitization LLC:                     |              |
|                                                  | 2.9%, 4/25/2008   |        | 200,000,000 |        | 199,613,333 |
|                                                  | 2.92%, 4/25/2008  |        | 300,000,000 |        | 299,416,000 |
| CBA (Delaware) Finance, Inc., 2.88%, 5/30/2008        |              | 26,724,000  |        | 26,597,863  |
| Chariot Funding LLC:                                  |              |
|                                                  | 2.7%, 4/25/2008   |        | 68,970,000  |        | 68,845,854  |
|                                                  | 2.75%, 4/21/2008  |        | 225,900,000 |        | 225,554,875 |
|                                                  | 2.77%, 4/24/2008  |        | 143,000,000 |        | 142,746,930 |
|                                                  | 2.9%, 4/3/2008    |        | 293,080,000 |        | 293,032,782 |
| DNB NOR Bank ASA:                                     |              |
|                                                  | 3.06%, 4/30/2008  |        | 122,000,000 |        | 121,699,270 |
|                                                  | 4.205%, 4/9/2008  |        | 79,000,000  |        | 78,926,179  |
| General Electric Capital Corp.:                       |              |
|                                                  | 2.63%, 4/9/2008   |        | 10,000,000  |        | 9,994,156   |
|                                                  | 2.75%, 9/19/2008  |        | 199,250,000 |        | 196,647,297 |
|                                                  | 3.0%, 5/27/2008   |        | 297,250,000 |        | 295,862,833 |
|                                                  | 3.53%, 7/14/2008  |        | 191,000,000 |        | 189,052,224 |
|                                                  | 3.92%, 9/30/2008  |        | 200,000,000 |        | 196,036,444 |
|                                                  | 4.05%, 7/7/2008   |        | 25,000,000  |        | 24,727,861  |
|                                                  | 4.42%, 7/21/2008  |        | 200,000,000 |        | 197,274,333 |
|                                                  | 4.62%, 4/21/2008  |        | 155,000,000 |        | 154,602,167 |
| Giro Balanced Funding Corp.:                          |              |
|                                                  | 3.265%, 4/4/2008  |        | 95,000,000  |        | 94,974,152  |
|                                                  | 3.49%, 4/11/2008  |        | 43,600,000  |        | 43,557,732  |
| Greenwich Capital Holdings, Inc.:                     |              |
|                                                  | 3.72%, 5/23/2008  |        | 23,400,000  |        | 23,274,264  |
|                                                  | 3.8%, 5/23/2008   |        | 69,250,000  |        | 68,869,894  |
|                                                  | 4.81%, 5/28/2008  |        | 130,000,000 |        | 129,009,942 |
| ING (US) Funding LLC, 2.72%, 5/12/2008                |              | 350,000     |        | 348,916     |
| Johnson & Johnson, 3.38%, 7/23/2008               |              | 70,000,000  |        | 69,257,339  |
| Jupiter Securitization Co., LLC, 2.75%, 4/21/2008     |              | 144,391,000 |        | 144,170,403 |
| KFW International Finance, Inc.:                      |              |
|                                                  | 2.2%, 5/2/2008    |        | 11,042,000  |        | 11,021,082  |
|                                                  | 2.23%, 4/22/2008  |        | 5,000,000   |        | 4,993,496   |
|                                                  | 2.27%, 4/14/2008  |        | 861,000     |        | 860,294     |
|                                                  | 2.8%, 4/7/2008    |        | 3,260,000   |        | 3,258,479   |
|                                                  | 2.85%, 4/7/2008   |        | 535,000     |        | 534,746     |
|                                                  | 4.225%, 4/7/2008  |        | 16,849,000  |        | 16,837,136  |
| Liberty Street Funding LLC:                           |              |
|                                                  | 2.97%, 4/22/2008  |        | 130,700,000 |        | 130,473,562 |
|                                                  | 3.15%, 4/14/2008  |        | 35,000,000  |        | 34,960,187  |
|                                                  | 3.15%, 4/18/2008  |        | 40,500,000  |        | 40,439,756  |
|                                                       |                   |             |             |             |             |  |

 

 

 

|                                             | 3.17%, 4/23/2008  |       | 64,000,000  |       | 63,876,018  |
|--------------------------------------------------|-------------------|------------|-------------|------------|-------------|
|                                             | 3.2%, 4/11/2008   |       | 49,500,000  |       | 49,456,000  |
|                                             | 3.2%, 4/14/2008   |       | 80,000,000  |       | 79,907,556  |
| MetLife, Inc., 2.3%, 4/18/2008                   |              | 6,766,000  |        | 6,758,651  |
| Nestle Capital Corp.:                            |              |
|                                             | 2.49%, 12/17/2008 |       | 133,000,000 |       | 130,608,217 |
|                                             | 2.69%, 9/18/2008  |       | 300,000,000 |       | 296,189,167 |
|                                             | 4.3%, 10/31/2008  |       | 54,250,000  |       | 52,869,790  |
|                                             | 4.37%, 5/21/2008  |       | 25,000,000  |       | 24,848,264  |
| Nieuw Amsterdam Receivables Corp.:               |              |
|                                             | 2.93%, 4/25/2008  |       | 200,000,000 |       | 199,609,333 |
|                                             | 3.2%, 4/9/2008    |       | 50,000,000  |       | 49,964,444  |
|                                             | 3.2%, 4/10/2008   |       | 115,000,000 |       | 114,908,000 |
| Old Line Funding LLC:                            |              |
|                                             | 3.12%, 4/9/2008   |       | 100,000,000 |       | 99,930,667  |
|                                             | 3.12%, 4/11/2008  |       | 151,824,000 |       | 151,692,419 |
|                                             | 3.14%, 4/9/2008   |       | 20,789,000  |       | 20,774,494  |
|                                             | 3.17%, 4/10/2008  |       | 22,202,000  |       | 22,184,405  |
| Park Avenue Receivables Corp.:                   |              |
|                                             | 2.7%, 4/22/2008   |       | 50,000,000  |       | 49,921,250  |
|                                             | 2.77%, 4/24/2008  |       | 111,000,000 |       | 110,803,561 |
| PepsiCo, Inc., 2.5%, 4/10/2008                   |              | 15,000,000 |        | 14,990,625 |
| Perry Global Funding LLC:                        |              |
|                                             | 4.4%, 4/2/2008    |       | 95,000,000  |       | 94,988,389  |
|                                             | 4.5%, 4/2/2008    |       | 130,000,000 |       | 129,983,750 |
| Pfizer, Inc.:                                    |              |
|                                             | 2.685%, 8/6/2008  |       | 100,000,000 |       | 99,052,792  |
|                                             | 4.38%, 5/14/2008  |       | 100,000,000 |       | 99,476,833  |
|                                             | 4.4%, 5/14/2008   |       | 69,000,000  |       | 68,637,367  |
|                                             | 4.41%, 5/7/2008   |       | 89,790,000  |       | 89,394,026  |
|                                             | 4.41%, 5/16/2008  |       | 63,750,000  |       | 63,398,578  |
| Procter & Gamble International Funding SCA:  |              |
|                                             | 2.25%, 4/22/2008  |       | 12,000,000  |       | 11,984,250  |
|                                             | 2.25%, 4/25/2008  |       | 90,000,000  |       | 89,865,000  |
|                                             | 2.55%, 4/8/2008   |       | 50,000,000  |       | 49,975,208  |
| Ranger Funding Co., LLC:                         |              |
|                                             | 2.8%, 4/21/2008   |       | 100,000,000 |       | 99,844,444  |
|                                             | 2.8%, 5/9/2008    |       | 100,000,000 |       | 99,704,444  |
|                                             | 3.25%, 4/10/2008  |       | 55,000,000  |       | 54,955,312  |
| Royal Bank of Scotland Group PLC:                |              |
|                                             | 4.19%, 7/10/2008  |       | 71,090,000  |       | 70,262,591  |
|                                             | 4.25%, 6/9/2008   |       | 130,000,000 |       | 128,941,042 |
| San Paolo IMI US Financial Co., 2.78%, 4/16/2008 |              | 4,451,000  |        | 4,445,844  |
| Scaldis Capital LLC:                             |              |
|                                             | 2.9%, 4/17/2008   |       | 150,000,000 |       | 149,806,667 |
|                                             | 2.9%, 4/23/2008   |       | 400,000,000 |       | 399,291,111 |
|                                             | 2.95%, 4/25/2008  |       | 337,325,000 |       | 336,661,594 |
|                                             | 3.05%, 4/16/2008  |       | 100,000,000 |       | 99,872,917  |
|                                             | 3.1%, 4/16/2008   |       | 50,000,000  |       | 49,935,417  |
| Scotiabanc, Inc., 3.02%, 5/13/2008               |              | 63,750,000 |        | 63,525,387 |
| Sheffield Receivables Corp.:                     |              |
|                                             | 2.68%, 4/15/2008  |       | 101,000,000 |       | 100,894,736 |
|                                             | 2.8%, 4/2/2008    |       | 55,000,000  |       | 54,995,722  |
|                                             | 3.1%, 5/28/2008   |       | 25,000,000  |       | 24,877,292  |
|                                             | 3.13%, 4/10/2008  |       | 30,000,000  |       | 29,976,525  |
|                                             | 3.15%, 4/8/2008   |       | 114,000,000 |       | 113,930,175 |
| Societe Generale North America, Inc.:            |              |
|                                                  |                   |            |             |            |             |  |

 

 

 

|                                                            | 3.88%, 4/14/2008  |               | 84,500,000  |        | 84,381,606  |
|-----------------------------------------------------------------|-------------------|--------------------|-------------|-------------|-------------|
|                                                            | 4.0%, 7/7/2008    |               | 152,500,000 |        | 150,856,389 |
|                                                            | 4.52%, 4/24/2008  |               | 52,866,000  |        | 52,713,335  |
| Starbird Funding Corp.:                                         |              |
|                                                            | 3.15%, 4/23/2008  |               | 323,700,000 |        | 323,076,877 |
|                                                            | 3.2%, 4/16/2008   |               | 75,000,000  |        | 74,900,000  |
| Thunder Bay Funding LLC:                                        |              |
|                                                            | 2.8%, 4/25/2008   |               | 60,172,000  |        | 60,059,679  |
|                                                            | 3.12%, 4/11/2008  |               | 30,471,000  |        | 30,444,592  |
|                                                            | 3.15%, 5/9/2008   |               | 25,000,000  |        | 24,916,875  |
| Toronto-Dominion Holdings USA, Inc., 2.66%, 6/23/2008           |              | 4,000,000          |        | 3,975,469   |
| Toyota Motor Credit Corp.:                                      |              |
|                                                            | 2.53%, 4/9/2008   |               | 17,000,000  |        | 16,990,442  |
|                                                            | 4.29%, 4/7/2008   |               | 75,000,000  |        | 74,946,375  |
|                                                            | 4.61%, 4/25/2008  |               | 40,000,000  |        | 39,877,067  |
| Tulip Funding Corp.:                                            |              |
|                                                            | 2.9%, 4/21/2008   |               | 250,000,000 |        | 249,597,222 |
|                                                            | 3.17%, 5/7/2008   |               | 100,000,000 |        | 99,683,000  |
| United Parcel Service, Inc.:                                    |              |
|                                                            | 3.25%, 12/17/2008 |               | 50,000,000  |        | 48,826,389  |
|                                                            | 3.85%, 7/31/2008  |               | 3,750,000   |        | 3,701,474   |
|                                                            | 4.0%, 6/30/2008   |               | 50,000,000  |        | 49,500,000  |
|                                                            | 4.13%, 7/31/2008  |               | 40,750,000  |        | 40,184,333  |
|                                                            | 4.18%, 5/30/2008  |               | 58,950,000  |        | 58,546,160  |
| Variable Funding Capital Co., LLC, 3.12%, 4/11/2008             |              | 301,000,000        |        | 300,739,133 |
| Victory Receivables Corp.:                                      |              |
|                                                            | 3.05%, 4/23/2008  |               | 29,700,000  |        | 29,644,643  |
|                                                            | 3.2%, 4/4/2008    |               | 55,000,000  |        | 54,985,333  |
|                                                            | 3.25%, 4/3/2008   |               | 30,000,000  |        | 29,994,583  |
|                                                            | 3.3%, 4/2/2008    |               | 135,000,000 |        | 134,987,625 |
| Westpac Banking Corp.:                                          |              |
|                                                            | 2.87%, 6/5/2008   |               | 75,000,000  |        | 74,611,354  |
|                                                            | 2.98%, 5/2/2008   |               | 70,600,000  |        | 70,418,833  |
| Windmill Funding I Corp.:                                       |              |
|                                                            | 3.15%, 4/4/2008   |               | 175,000,000 |        | 174,954,062 |
|                                                            | 3.27%, 4/8/2008   |               | 17,600,000  |        | 17,588,809  |
| Yorktown Capital LLC:                                           |              |
|                                                            | 2.7%, 4/24/2008   |               | 25,000,000  |        | 24,956,875  |
|                                                            | 5.15%, 4/11/2008  |               | 17,954,000  |        | 17,928,316  |
|                                                                 |
|                                                            |              | **11,785,734,623** |
| **Issued at Par 3.3%**                                          |              |
| CHI Catholic Health Initiatives:                                |              |
|                                                            | 3.1%, 5/21/2008   |               | 35,000,000  |        | 35,000,000  |
|                                                            | 3.25%, 6/5/2008   |               | 178,800,000 |        | 178,800,000 |
|                                                            | 4.38%, 4/3/2008   |               | 30,000,000  |        | 30,000,000  |
| Dexia Delaware LLC, 2.54%, 4/1/2008                             |              | 4,300,000          |        | 4,300,000   |
| Jupiter Securitization Co., LLC, 3.15%, 4/1/2008                |              | 75,299,000         |        | 75,299,000  |
| Lehman Brothers Holdings, Inc., 3.35%, 4/1/2008                 |              | 174,600,000        |        | 174,600,000 |
| Lloyds TSB Bank PLC, 2.74%, 4/1/2008                            |              | 4,000,000          |        | 4,000,000   |
| Market Street Funding LLC, 3.3%, 4/1/2008                       |              | 104,994,000        |        | 104,994,000 |
| Natexis Banques Populaires US Finance Co., LLC, 2.99%, 4/1/2008 |              | 3,018,000          |        | 3,018,000   |
| Nieuw Amsterdam Receivables Corp., 3.25%, 4/1/2008              |              | 59,920,000         |        | 59,920,000  |
| Nordea North America, Inc., 2.49%, 4/1/2008                     |              | 4,000,000          |        | 4,000,000   |
| Park Avenue Receivables Corp., 3.15%, 4/1/2008                  |              | 45,585,000         |        | 45,585,000  |
| Rabobank USA Financial Corp., 2.2%, 4/1/2008                    |              | 1,520,000          |        | 1,520,000   |
| Romulus Funding Corp., 3.45%, 4/1/2008                          |              | 122,678,000        |        | 122,678,000 |
|                                                                 |                   |                    |             |             |             |  |  |  |

 

 

 

| Societe Generale North America, Inc., 2.8%, 4/1/2008                           |                                                                                          | 4,711,000          |              | 4,711,000       |
|--------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------|--------------------|-------------------|-----------------|
| Starbird Funding Corp., 3.55%, 4/1/2008                                        |                                                                                          | 157,519,000        |              | 157,519,000     |
|                                                                                |
|                                                                           |                                                                                          |               | **1,005,944,000** |
|                                                                                |
| **Total Commercial Paper**(Cost $12,791,678,623)                               |                                                                                          | **12,791,678,623** |
|                                                                           | **Master Notes 2.2%**                                                                         |               |
| Citigroup Global Markets, Inc., 3.15% *, 4/1/2008 (a) (Cost $665,000,000)      |                                                                                          | 665,000,000        |              | **665,000,000** |
|                                                                           | **Government & Agency Obligations 5.4%**                                                  |               |
| **US Government Sponsored Agencies**                                           |                                                                                          |
| Federal Home Loan Bank:                                                        |                                                                                          |
|                                                                           | 1.5% **, 4/1/2008                                                                             |               | 1,976,000         |            | 1,976,000 |
|                                                                           | 2.625%, 7/15/2008                                                                             |               | 64,850,000        |            | 64,576,357 |
|                                                                           | 2.65% *, 9/17/2008                                                                            |               | 100,000,000       |            | 99,979,599 |
|                                                                           | Step-up Coupon, 2.75% to 6/11/2008, 3.0% to 9/11/2008, 3.25% to 12/11/2008, 3.5% to 3/11/2009 |               | 73,000,000        |            | 73,000,000 |
|                                                                           | 3.7% **, 7/9/2008                                                                             |               | 80,000,000        |            | 79,186,000 |
|                                                                           | 4.1% **, 7/22/2008                                                                            |               | 116,000,000       |            | 114,520,356 |
|                                                                           | 4.15% **, 6/9/2008                                                                            |               | 72,550,000        |            | 71,972,925 |
| Federal Home Loan Mortgage Corp., 3.75% **, 7/7/2008                           |                                                                                          | 130,000,000        |              | 128,686,458     |
| Federal National Mortgage Association:                                         |                                                                                          |
|                                                                           | 1.65% **, 4/1/2008                                                                            |               | 981,000           |            | 981,000 |
|                                                                           | 2.33% *, 9/3/2009                                                                             |               | 380,000,000       |            | 379,973,006 |
|                                                                           | 3.73% **, 5/29/2008                                                                           |               | 233,000,000       |            | 231,599,799 |
|                                                                           | 3.965% **, 4/9/2008                                                                           |               | 44,757,000        |            | 44,717,564 |
|                                                                           | 4.19% **, 4/30/2008                                                                           |               | 200,000,000       |            | 199,324,944 |
|                                                                           | 4.2% **, 4/18/2008                                                                            |               | 120,700,000       |            | 120,460,612 |
|                                                                                |
| **Total Government & Agency Obligations**(Cost $1,610,954,620)             |                                                                                          | **1,610,954,620**  |
|                                                                           | **Asset Backed 0.3%**                                                                         |               |
| Steers (Delaware) Business Trust, 144A, 2.674% *, 5/27/2048 (Cost $94,386,653) |                                                                                          | 94,386,653         |              | **94,386,653**  |
|                                                                           | **Short Term Notes* 30.9%**                                                                   |               |
| Abbey National Treasury Services PLC:                                          |                                                                                          |
|                                                                           | 3.13%, 2/13/2009                                                                              |               | 50,000,000        |            | 50,000,000 |
|                                                                           | 3.26%, 2/20/2009                                                                              |               | 187,250,000       |            | 187,250,000 |
| ABN AMRO Bank NV, 144A, 4.001%, 4/18/2008                                      |                                                                                          | 57,000,000         |              | 57,002,197      |
| Alliance & Leicester PLC, 3.078%, 8/7/2008                                 |                                                                                          | 100,000,000        |              | 100,000,000     |
| Allied Irish Banks PLC, 2.538%, 8/18/2008                                      |                                                                                          | 118,400,000        |              | 118,400,000     |
| American Express Centurion Bank, 2.787%, 4/17/2008                             |                                                                                          | 150,000,000        |              | 149,999,344     |
| American Honda Finance Corp.:                                                  |                                                                                          |
|                                                                           | 144A, 2.728%, 3/25/2009                                                                       |               | 100,000,000       |            | 100,000,000 |
|                                                                           | 144A, 3.066%, 5/9/2008                                                                        |               | 50,000,000        |            | 50,000,000 |
|                                                                           | 144A, 3.168%, 5/12/2008                                                                       |               | 22,730,000        |            | 22,732,729 |
|                                                                           | 144A, 4.522%, 7/11/2008                                                                       |               | 8,000,000         |            | 8,002,351 |
|                                                                           | 4.525%, 4/10/2008                                                                             |               | 105,000,000       |            | 105,001,336 |
| ANZ National (International) Ltd., 144A, 3.21%, 4/10/2009                      |                                                                                          | 96,000,000         |              | 96,000,000      |
|                                                                           |                                                                                          |
|                                                                           |                                                                                          |
| Australia & New Zealand Banking Group Ltd.:                                |                                                                                          |
|                                                                           | 2.618%, 8/22/2008                                                                             |               | 60,000,000        |            | 60,000,000 |
|                                                                           | 144A, 3.35%, 4/2/2009                                                                         |               | 199,350,000       |            | 199,343,138 |
| Banco Bilbao Vizcaya Argentaria SA, 4.017%, 4/17/2008                          |                                                                                          | 175,050,000        |              | 175,053,183     |
| Banco Espanol de Credito SA, 3.941%, 8/11/2008                                 |                                                                                          | 297,000,000        |              | 297,000,000     |
|                                                                           |                                                                                          |
| Bank of America NA:                                                            |                                                                                          |
|                                                                           | 2.315%, 5/16/2008                                                                             |               | 35,000,000        |            | 35,000,000 |
|                                                                                |                                                                                               |                    |                   |                 |  |  |  |  |

 

 

 

|                                                                       | 3.208%, 4/3/2009        |        | 195,000,000 |        | 195,000,000 |
|----------------------------------------------------------------------------|-------------------------|-------------|-------------|-------------|-------------|
| Bank of Ireland, 2.548%, 8/18/2008                                         |                    | 75,000,000  |        | 75,000,000  |
| Bank of Scotland PLC, 4.614%, 4/6/2009                                     |                    | 256,500,000 |        | 256,500,000 |
| Berkshire Hathaway Finance Corp., 144A, 3.13%, 5/16/2008                   |                    | 38,530,000  |        | 38,535,071  |
| Beta Finance, Inc., 144A, 2.4%, 6/11/2008                                  |                    | 70,000,000  |        | 69,999,345  |
| BMW (UK) Capital PLC, 2.837%, 8/14/2008                                    |                    | 55,000,000  |        | 55,000,000  |
| BNP Paribas:                                                               |                    |
|                                                                       | 2.606%, 8/25/2008       |        | 109,000,000 |        | 109,000,000 |
|                                                                       | 4.079%, 2/13/2009       |        | 84,100,000  |        | 84,100,000  |
| Caisse Nationale des Caisses d'Epargne et de Prevoyance, 3.066%, 7/10/2008 |                    | 197,000,000 |        | 197,000,000 |
| Caja de Ahorros y Monte de Piedad de Madrid, 4.043%, 8/12/2008             |                    | 225,000,000 |        | 225,000,000 |
| Canadian Imperial Bank of Commerce:                                        |                    |
|                                                                       | 2.41%, 6/9/2008         |        | 112,750,000 |        | 112,750,000 |
|                                                                       | 3.991%, 7/18/2008       |        | 16,500,000  |        | 16,490,510  |
| Centauri Corp., 144A, 2.4%, 6/11/2008                                      |                    | 65,000,000  |        | 64,999,392  |
| Commonwealth Bank of Australia:                                            |                    |
|                                                                       | 2.618%, 9/23/2008       |        | 80,000,000  |        | 80,000,000  |
|                                                                       | 2.703%, 12/18/2008      |        | 72,000,000  |        | 71,986,621  |
| Credit Agricole SA:                                                        |                    |
|                                                                       | 2.568%, 7/22/2008       |        | 246,000,000 |        | 246,000,000 |
|                                                                       | 144A, 2.828%, 4/22/2009 |        | 296,500,000 |        | 296,500,000 |
|                                                                       | 3.837%, 8/26/2008       |        | 200,000,000 |        | 200,000,000 |
| Danske Bank AS, 2.505%, 8/19/2008                                          |                    | 268,000,000 |        | 267,993,151 |
| DNB NOR Bank ASA, 2.598%, 9/24/2008                                        |                    | 120,000,000 |        | 120,000,000 |
| General Electric Capital Corp.:                                            |                    |
|                                                                       | 2.618%, 8/19/2011       |        | 135,000,000 |        | 135,000,000 |
|                                                                       | 4.317%, 4/15/2008       |        | 50,000,000  |        | 50,001,871  |
| HSBC Finance Corp.:                                                        |                    |
|                                                                       | 144A, 2.658%, 9/24/2008 |        | 140,000,000 |        | 140,000,000 |
|                                                                       | 3.1%, 8/6/2008          |        | 125,000,000 |        | 125,000,000 |
| HSH Nordbank AG, 2.618%, 8/20/2008                                         |                    | 205,000,000 |        | 205,000,000 |
| ING Bank NV, 144A, 3.281%, 3/26/2009                                       |                    | 84,000,000  |        | 84,000,001  |
| Intesa Bank Ireland PLC, 2.608%, 8/22/2008                                 |                    | 155,000,000 |        | 155,000,000 |
| K2 Corp., 144A, 3.203%, 4/28/2008                                          |                    | 65,000,000  |        | 64,999,523  |
| Lloyds TSB Bank PLC, 3.05%, 9/6/2008                                       |                    | 100,000,000 |        | 100,000,000 |
| Marshall & Ilsley Bank, 2.827%, 8/14/2008                              |                    | 56,000,000  |        | 56,000,000  |
| Metropolitan Life Global Funding I, 144A, 4.247%, 2/9/2009                 |                    | 66,500,000  |        | 66,500,000  |
| National Australia Bank Ltd.:                                              |                    |
|                                                                       | 2.8%, 8/14/2008         |        | 125,000,000 |        | 125,000,000 |
|                                                                       | 3.045%, 4/7/2009        |        | 125,750,000 |        | 125,750,000 |
|                                                                       | 3.27%, 2/19/2009        |        | 179,750,000 |        | 179,750,000 |
| Natixis:                                                                   |                    |
|                                                                       | 3.096%, 6/6/2008        |        | 200,000,000 |        | 200,000,000 |
|                                                                       | 3.24%, 4/6/2009         |        | 268,500,000 |        | 268,500,000 |
| Nordea Bank AB, 3.048%, 9/8/2008                                           |                    | 85,000,000  |        | 85,000,000  |
| Northern Rock PLC, 3.116%, 8/4/2008                                        |                    | 65,000,000  |        | 65,000,000  |
| Procter & Gamble International Funding SCA, 3.14%, 2/19/2009           |                    | 64,000,000  |        | 64,000,000  |
| Rabobank Nederland NV, 3.045%, 11/14/2008                                  |                    | 195,000,000 |        | 195,000,000 |
| Royal Bank of Canada:                                                      |                    |
|                                                                       | 3.05%, 8/5/2008         |        | 100,000,000 |        | 100,000,000 |
|                                                                       | 3.055%, 4/4/2008        |        | 350,000,000 |        | 349,999,186 |
| Royal Bank of Scotland PLC, 3.064%, 4/3/2008                               |                    | 200,000,000 |        | 199,999,677 |
| Skandinaviska Enskilda Banken AB, 3.068%, 8/8/2008                         |                    | 80,000,000  |        | 80,000,000  |
| Svenska Handelsbanken AB, 2.588%, 8/20/2008                                |                    | 200,000,000 |        | 200,000,000 |
| Toyota Motor Credit Corp.:                                                 |                    |
|                                                                       | 2.13%, 4/11/2008        |        | 200,000,000 |        | 200,000,000 |
|                                                                       | 2.132%, 6/30/2008       |        | 280,000,000 |        | 280,000,000 |
|                                                                            |                         |             |             |             |             |  |

 

 

 

|                                                                                                                                                                                                          | 2.36%, 3/12/2009                                                                                                                                                                                                                         |               | 110,000,000        |                | 110,000,000      |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------|--------------------|---------------------|------------------|
|                                                                                                                                                                                                          | 3.01%, 11/17/2008                                                                                                                                                                                                                        |               | 100,000,000        |                | 100,000,000      |
|                                                                                                                                                                                                          | 3.24%, 3/19/2009                                                                                                                                                                                                                         |               | 100,000,000        |                | 100,000,000      |
| UniCredito Italiano Bank (Ireland) PLC:                                                                                                                                                                       |                                                                                                                                                                                                                                     |
|                                                                                                                                                                                                          | 2.837%, 8/14/2008                                                                                                                                                                                                                        |               | 260,000,000        |                | 260,000,000      |
|                                                                                                                                                                                                          | 3.078%, 8/8/2008                                                                                                                                                                                                                         |               | 50,000,000         |                | 50,000,000       |
|                                                                                                                                                                                                          | 4.432%, 8/8/2008                                                                                                                                                                                                                         |               | 220,000,000        |                | 219,994,881      |
|                                                                                                                                                                                                               |
| **Total Short Term Notes**(Cost $9,332,133,507)                                                                                                                                                               |                                                                                                                                                                                                                                     | **9,332,133,507**  |
|                                                                                                                                                                                                          | **Time Deposits 2.5%**                                                                                                                                                                                                                   |               |
| Bank of Tokyo-Mitsubishi-UFJ Ltd., 3.0%, 4/1/2008                                                                                                                                                             |                                                                                                                                                                                                                                     | 70,000,000         |               | 70,000,000          |
| BNP Paribas, 2.875%, 4/1/2008                                                                                                                                                                                 |                                                                                                                                                                                                                                     | 35,500,000         |               | 35,500,000          |
| Calyon, 3.0%, 4/1/2008                                                                                                                                                                                        |                                                                                                                                                                                                                                     | 35,587,019         |               | 35,587,019          |
| Danske Bank AS, 3.5%, 4/1/2008                                                                                                                                                                                |                                                                                                                                                                                                                                     | 250,000,000        |               | 250,000,000         |
| ING Bank NV, 2.5%, 4/1/2008                                                                                                                                                                                   |                                                                                                                                                                                                                                     | 232,000,000        |               | 232,000,000         |
| Landesbank Hessen-Thuringen Girozentrale, 2.75%, 4/1/2008                                                                                                                                                     |                                                                                                                                                                                                                                     | 115,000,000        |               | 115,000,000         |
| Societe Generale, 2.75%, 4/1/2008                                                                                                                                                                             |                                                                                                                                                                                                                                     | 8,187,489          |               | 8,187,489           |
|                                                                                                                                                                                                               |
| **Total Time Deposits**(Cost $746,274,508)                                                                                                                                                                    |                                                                                                                                                                                                                                     | **746,274,508**    |
|                                                                                                                                                                                                          | **Repurchase Agreements 0.4%**                                                                                                                                                                                                           |               |
| BNP Paribas, 2.4%, dated 3/31/2008, to be repurchased at $5,843,501 on 4/1/2008 (b)                                                                                                                           |                                                                                                                                                                                                                                     | 5,843,111          |               | 5,843,111           |
| Greenwich Capital Markets, Inc., 2.5%, dated 3/31/2008, to be repurchased at $31,002,153 on 4/1/2008 (c)                                                                                                      |                                                                                                                                                                                                                                     | 31,000,000         |               | 31,000,000          |
| The Goldman Sachs & Co., 0.75%, dated 3/31/2008 to be repurchased at $88,331,137 on 4/1/2008 (d)                                                                                                          |                                                                                                                                                                                                                                     | 88,329,297         |               | 88,329,297          |
|                                                                                                                                                                                                               |
| **Total Repurchase Agreements**(Cost $125,172,408)                                                                                                                                                            |                                                                                                                                                                                                                                     | **125,172,408**    |
|                                                                                                                                                                                                          | **% of Net Assets**                                                                                                                                                                                                                      |               | **Value ($)**      |
|                                                                                                                                                                                                               |
| **Total Investment Portfolio**(Cost $30,116,990,641) †                                                                                                                                                 | 99.7                                                                                                                                                                                                                                     |               | **30,116,990,641** |
| **Other Assets and Liabilities, Net**                                                                                                                                                                         | 0.3                                                                                                                                                                                                                                      |               | **98,351,350**     |
|                                                                                                                                                                                                               |
| **Net Assets**                                                                                                                                                                                                | 100.0                                                                                                                                                                                                                                    |               | **30,215,341,991** |
|                                                                                                                                                                                                          | *For information on the Fund's policies regarding the valuation of investments and other significant accounting policies, please refer to the Fund's most recent semi-annual or annual financial statements.*                            |
| ***                                                                                                                                                                                                           | *Floating rate notes are securities whose yields vary with a designated market index or market rate, such as the coupon-equivalent of the US Treasury bill rate. These securities are shown at their current rate as of March 31, 2008.* |
| ****                                                                                                                                                                                                          | *Annualized yield at time of purchase; not a coupon rate.*                                                                                                                                                                               |
| *†*                                                                                                                                                                                                    | *The cost for federal income tax purposes was $30,116,990,641.*                                                                                                                                                                          |
| *(a)*                                                                                                                                                                                                         | *Reset date; not a maturity date.*                                                                                                                                                                                                       |
| *(b)*                                                                                                                                                                                                         | *Collateralized by $5,936,363 Federal National Mortgage Association, 5.5%, maturing on 3/1/2038 with a value of $6,018,405.*                                                                                                             |
| *(c)*                                                                                                                                                                                                         | *Collateralized by $31,374,203 Federal National Mortgage Association, with various coupon rates from 5.0-6.5%, with various maturities of 9/1/2020-4/1/2038 with a value of $31,935,010.*                                                |
| *(d)*                                                                                                                                                                                                         | *Collateralized by:*                                                                                                                                                                                                                     |
|                                                                                                                                                                                                          | ***Principal***                                                                                                                                                                                                                          |               |               |                | ***Collateral*** |   |
|                                                                                                                                                                                                          | ***Amount ($)***                                                                                                                                                                                                                         | ***Security***     | ***Rate (%)***     | ***Maturity Date*** | ***Value ($)***  |   |
|                                                                                                                                                                                                          | *37,106,000*                                                                                                                                                                                                                             | *US Treasury Bond* | *4.75*             | *2/15/2037*         | *39,889,405*     |   |
|                                                                                                                                                                                                          | *48,728,000*                                                                                                                                                                                                                             | *US Treasury Note* | *3.5*              | *8/15/2009*         | *50,206,745*     |   |
|                                                                                                                                                                                                          | ***Total Collateral Value***                                                                                                                                                                                                             |               |               | ***90,096,150***    |             |
| *144A: Security exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration, normally to qualified institutional buyers.* |
|                                                                                                                                                                                                               |                                                                                                                                                                                                                                          |                    |                    |                     |                  |  |  |  |  |  |  |  |  |  |  |  |

*The following is a summary of the inputs used as of March 31, 2008 in valuing the Fund’s assets carried at fair value:*

 

 

 

| ***Valuation Inputs***        | ***Investments in Securities at***

***Value*** |
|-------------------------------|-------------------------------------------------|
| *Level 1 - Quoted Prices*     | *$ -*                                           |
| *Level 2 - Other Significant* | *30,116,990,641*                                |
| *Observable Inputs*           |
| *Level 3 - Significant*       | *-*                                             |
| *Unobservable Inputs*         |
| ***Total***                   | ***$ 30,116,990,641***                          |

 

*The Fund adopted Financial Accounting Standards Board Statement of Financial Accounting Standards No. 157, Fair Value Measurements (“FAS 157"), effective January 1, 2008, which governs the application of generally accepted accounting principles that require fair value measurements of the Fund’s assets and liabilities. Fair value is an estimate of the price the Fund would receive upon            selling a security in a timely transaction to an independent buyer in the principal or most advantageous market of the security. FAS 157 established a three-tier hierarchy to maximize the use of observable market data and minimize the use of unobservable inputs and to establish classification of fair value measurements for disclosure purposes. Inputs refer broadly to the assumptions that market participants would use in pricing the asset or liability, including assumptions about            risk, for example, the risk inherent in a particular valuation technique used to measure fair value including such a pricing model and/or the risk inherent in the inputs to the valuation technique. Inputs may be observable or unobservable. Observable inputs are inputs that reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the reporting entity. Unobservable inputs are inputs that            reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances.*

 

*Various inputs are used in determining the value of the Fund’s investments. These inputs are summarized in the three broad levels as follows:*

 

|   | **•** | *Level 1 – quoted prices in active markets for identical securities* |
|--------|------------|----------------------------------------------------------------------------|

|   | **•** | *Level 2 – other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.)* |
|--------|------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | **•** | *Level 3 – significant unobservable inputs (including the Fund’s own assumptions in determining the fair value of investments)* |
|--------|------------|---------------------------------------------------------------------------------------------------------------------------------------------|

 

*For Level 1 inputs, the Fund uses unadjusted quoted prices in active markets for assets or liabilities with sufficient frequency and volume to provide pricing information as the most reliable evidence of fair value. The Fund’s Level 2 valuation techniques include inputs other than quoted prices within Level 1 that are observable for an asset or liability, either directly or indirectly. Level 2            observable inputs may include quoted prices for similar assets and liabilities in active markets or quoted prices for identical or similar assets or liabilities in markets that are not active in which there are few transactions, the prices are not current, or price quotations vary substantially over time or among market participants. Inputs that are observable for the asset or liability in Level 2 include such factors as interest rates, yield curves, prepayment speeds, credit risk,            and default rates for similar liabilities. Securities in the Fund are included in Level 2 since the securities are valued utilizing the amortized cost method permitted in accordance with Rule 2A-7 under the 1940 Act.**For Level 3 valuation techniques, the Fund uses unobservable inputs that reflect assumptions market participants would be expected to use in pricing the asset or liability. Unobservable inputs are used to measure fair value to the extent            that observable inputs are not available and are developed based on the best information available under the circumstances. In developing unobservable inputs, market participant assumptions are used if they are reasonably available without undue cost and effort.*

 

*The Fund may record changes to valuations based on the amount that might reasonably be expected to receive for a security upon its current sale consistent with the fair value measurement objective. Each determination is based on a consideration of all relevant factors, which are likely to vary from one pricing context to another. Examples of such factors may include, but are not limited to the type of            the security, the existence of any contractual restrictions on the security’s disposition, the price and extent of public trading in similar securities of the issue or of comparable companies, quotations or evaluated prices from broker-dealers and/or pricing services, information obtained from the issuer, analysts, and/or the appropriate stock exchange (for exchange-traded securities), an analysis of the company’s financial statements, an evaluation of the forces that            influence the issuer and the market(s) in which the security is purchased and sold, and with respect to debt securities, the maturity, coupon, creditworthiness, currency denomination, and the movement of the market in which the security is normally traded. Because of the inherent uncertainties of valuation, the values reflected in the financial statements may materially differ from the value determined upon sale of those investments.*

 

| **ITEM 2.** | **CONTROLS AND PROCEDURES**                                                                                                                                                                                                                                                                                                  |
|-------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|        |                                                                                                                                                                                                                                                                                                                         |
|        | (a)          The Chief Executive and Financial Officers concluded that the Registrant’s Disclosure Controls and Procedures are effective based on the evaluation of the Disclosure Controls and Procedures as of a date within 90 days of the filing date of this report. |

 

 

 

|        |                                                                                                                                                                                                                                                                                                                                                                                               |
|-------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|        | (b)          There have been no changes in the registrant’s internal control over financial reporting that occurred during the registrant’s last fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal controls over financial                            reporting. |
|        |                                                                                                                                                                                                                                                                                                                                                                                               |
| **ITEM 3.** | **EXHIBITS**                                                                                                                                                                                                                                                                                                                                                                                       |
|        |                                                                                                                                                                                                                                                                                                                                                                                               |
|        | Certification pursuant to Rule 30a-2(a) under the Investment Company Act of 1940 (17 CFR 270.30a-2(a)) is filed and attached hereto as Exhibit 99.CERT.                                                                                                                                                                                                                                            |

 

 

**SIGNATURES**

 

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 

| Registrant: | Cash Management Fund Institutional, a series of DWS Institutional Funds |
|-------------|-------------------------------------------------------------------------|

 

| By: | /s/Michael G. Clark |
|-----|---------------------|

|   | Michael G. Clark |
|--------|------------------|

President

 

| Date: | May 14, 2008 |
|-------|--------------|

 

 

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

 

| Registrant: | Cash Management Fund Institutional, a series of DWS Institutional Funds |
|-------------|-------------------------------------------------------------------------|

 

| By: | /s/Michael G. Clark |
|-----|---------------------|

|   | Michael G. Clark |
|--------|------------------|

President

 

| Date: | May 14, 2008 |
|-------|--------------|

 

 

| By: | /s/Paul Schubert |
|-----|------------------|

|   | Paul Schubert |
|--------|---------------|

Chief Financial Officer and Treasurer

 

| Date: | May 14, 2008 |
|-------|--------------|