# EDGAR Filing Document

**Accession Number:** 0000893818
**File Stem:** 0001193125-25-231556
**Filing Date:** 2025-10
**Character Count:** 13804
**Document Hash:** 64d0843036bbb288b492f5d173ff379f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-231556.hdr.sgml**: 20251006

**ACCESSION NUMBER**: 0001193125-25-231556

**CONFORMED SUBMISSION TYPE**: N-MFP3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20251006

**DATE AS OF CHANGE**: 20251006

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BlackRock Funds III
- **CENTRAL INDEX KEY:** 0000893818

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** N-MFP3
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-07332
- **FILM NUMBER:** 251376394

**BUSINESS ADDRESS:**
- **STREET 1:** 400 HOWARD STREET
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94105
- **BUSINESS PHONE:** 8006439691

**MAIL ADDRESS:**
- **STREET 1:** 400 HOWARD STREET
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94105

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BARCLAYS GLOBAL INVESTORS FUNDS
- **DATE OF NAME CHANGE:** 20060201

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BARCLAYS GLOBAL INVESTORS FUNDS INC
- **DATE OF NAME CHANGE:** 19990804

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MASTERWORKS FUNDS INC
- **DATE OF NAME CHANGE:** 19960607

## Series and Classes Contracts Data

### BlackRock Cash Funds: Institutional (Series ID: S000004275)

| Class ID   | Class Name       | Ticker Symbol   |
|:---|:---|:---|
| C000074119 | SL Agency Shares |  |

# Form N-MFP3: Monthly Schedule of Portfolio Holdings

## N-MFP: Filer Information
**Submission Type:** N-MFP3
**CIK:** 0000893818

### General Information

**Report for (YYYY-MM-DD):** 2025-09-30

**Registrant Full Name:** BlackRock Funds III

**CIK Number of Registrant:** 0000893818

**LEI of Registrant:** 5493008LW2651I1QB503

**Name of Series:** BlackRock Cash Funds: Institutional

**LEI of Series:** 549300JDHS1T46VWOG19

**EDGAR Series Identifier:** S000004275

**Total number of share classes in the series:** 1

**Is this the fund's final filing on Form N-MFP?:** No

**Has the fund acquired or merged with another fund?:** No

## Part A: Series-Level Information about the Fund

### Service Providers
| Role                          | Details                                                   | File/CIK Number   |
|:---|:---|:---|
| Investment Adviser            | BlackRock Fund Advisors                                   | 801-22609         |
| Independent Public Accountant | PricewaterhouseCoopers<br>City: Philadelphia<br>State: PA |  |
| Administrator                 | BlackRock Advisors, LLC                                   |  |
| Transfer Agent                | State Street Bank and Trust Company<br>CIK: 0000839287    | 085-05003         |

### Fund Characteristics & Assets

- **Securities Act File Number:** 033-54126

- **Is this a Feeder Fund?:** Yes

- **Is this a Master Fund?:** No

- **Is this series for insurance company separate accounts?:** No

- **Money Market Fund Category:** Prime

- **Is this a Retail Money Market Fund?:** No

- **Is this a Government Money Market Fund?:** No

- **WAM:** 1 days

- **WAL:** 1 days

- **Total Value of Portfolio Securities:** $84818090575.50

- **Amortized Cost of Portfolio Securities:** $0.00

- **Cash:** $0.00

- **Total Other Assets:** $958.00

- **Total Liabilities:** $312050765.92

- **Net Assets of Series:** $84506040767.58

- **Number of Shares Outstanding (Series):** 84460007067.5580

- **Does the fund seek to maintain a stable price per share?:** No

- **Stable Price Per Share:** $0.00

- **Is cash management vehicle an affiliated fund?:** Yes

- **Does the fund apply liquidity fees?:** No

### Daily & Weekly Liquid Assets
| Date       | Daily Liquid Assets ($)   | Weekly Liquid Assets ($)   | Daily Liquid Assets (%)   | Weekly Liquid Assets (%)   |
|:---|:---|:---|:---|:---|
| 2025-09-02 | $37782079648.33           | $46568419508.64            | 44.1100%                  | 54.3700%                   |
| 2025-09-03 | $34512656746.36           | $45067481919.69            | 40.9600%                  | 53.4900%                   |
| 2025-09-04 | $34778570052.17           | $44597438908.91            | 41.1500%                  | 52.7700%                   |
| 2025-09-05 | $32777456052.93           | $42997582159.23            | 39.5900%                  | 51.9300%                   |
| 2025-09-08 | $36638315690.57           | $44367101553.53            | 43.4000%                  | 52.5600%                   |
| 2025-09-09 | $38124833411.71           | $46434792015.98            | 44.3000%                  | 53.9600%                   |
| 2025-09-10 | $36047971319.20           | $46809958561.28            | 41.7800%                  | 54.2500%                   |
| 2025-09-11 | $36703097948.31           | $47048353699.26            | 42.5100%                  | 54.4900%                   |
| 2025-09-12 | $36989899237.11           | $47281129083.89            | 42.6500%                  | 54.5100%                   |
| 2025-09-15 | $37313376282.29           | $45471268055.81            | 43.9300%                  | 53.5400%                   |
| 2025-09-16 | $37421256267.75           | $45119744320.70            | 44.0800%                  | 53.1500%                   |
| 2025-09-17 | $38055685760.92           | $47340210757.66            | 43.6800%                  | 54.3400%                   |
| 2025-09-18 | $36037767026.48           | $45039052222.02            | 42.4900%                  | 53.1000%                   |
| 2025-09-19 | $37167074494.75           | $47379557180.26            | 42.4500%                  | 54.1200%                   |
| 2025-09-22 | $48739051349.96           | $57708576266.53            | 49.7900%                  | 58.9600%                   |
| 2025-09-23 | $47313445632.61           | $55818266072.67            | 49.3900%                  | 58.2700%                   |
| 2025-09-24 | $41168718655.34           | $53962604431.87            | 44.2400%                  | 57.9900%                   |
| 2025-09-25 | $38446514779.87           | $50882356747.04            | 42.6600%                  | 56.4600%                   |
| 2025-09-26 | $35556605756.95           | $48284452660.10            | 40.6100%                  | 55.1400%                   |
| 2025-09-29 | $34706000978.65           | $47064630999.91            | 40.4600%                  | 54.8700%                   |
| 2025-09-30 | $38173947889.92           | $46897994609.03            | 44.8500%                  | 55.0900%                   |

### 7-Day Gross Yield
| Date       | 7-Day Gross Yield   |
|:---|:---|
| 2025-09-02 | 4.5300%             |
| 2025-09-03 | 4.5300%             |
| 2025-09-04 | 4.5300%             |
| 2025-09-05 | 4.5400%             |
| 2025-09-08 | 4.5400%             |
| 2025-09-09 | 4.5500%             |
| 2025-09-10 | 4.5500%             |
| 2025-09-11 | 4.5500%             |
| 2025-09-12 | 4.5500%             |
| 2025-09-15 | 4.5600%             |
| 2025-09-16 | 4.5600%             |
| 2025-09-17 | 4.5600%             |
| 2025-09-18 | 4.5400%             |
| 2025-09-19 | 4.4700%             |
| 2025-09-22 | 4.4200%             |
| 2025-09-23 | 4.3900%             |
| 2025-09-24 | 4.3600%             |
| 2025-09-25 | 4.3400%             |
| 2025-09-26 | 4.3400%             |
| 2025-09-29 | 4.3400%             |
| 2025-09-30 | 4.3500%             |

### Daily Net Asset Value per Share (Series)
| Date       | Net Asset Value per Share   |
|:---|:---|
| 2025-09-02 | 1.0005                      |
|  |  |
| 2025-09-03 | 1.0005                      |
|  |  |
| 2025-09-04 | 1.0005                      |
|  |  |
| 2025-09-05 | 1.0005                      |
|  |  |
| 2025-09-08 | 1.0005                      |
|  |  |
| 2025-09-09 | 1.0005                      |
|  |  |
| 2025-09-10 | 1.0005                      |
|  |  |
| 2025-09-11 | 1.0006                      |
|  |  |
| 2025-09-12 | 1.0005                      |
|  |  |
| 2025-09-15 | 1.0006                      |
|  |  |
| 2025-09-16 | 1.0006                      |
|  |  |
| 2025-09-17 | 1.0006                      |
|  |  |
| 2025-09-18 | 1.0006                      |
|  |  |
| 2025-09-19 | 1.0005                      |
|  |  |
| 2025-09-22 | 1.0006                      |
|  |  |
| 2025-09-23 | 1.0006                      |
|  |  |
| 2025-09-24 | 1.0005                      |
|  |  |
| 2025-09-25 | 1.0005                      |
|  |  |
| 2025-09-26 | 1.0005                      |
|  |  |
| 2025-09-29 | 1.0005                      |
|  |  |
| 2025-09-30 | 1.0005                      |
|  |  |

## Part B: Class-Level Information about the Fund

### Class: SL Agency Shares

- **Minimum Initial Investment:** $100000000.00

- **Net Assets of Class:** $84506040767.58

- **Number of Shares Outstanding:** 84460007067.5580

- **Expense Reimbursement/Waiver:** 958.00

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-09-02 | 1.0005          |
|  |  |
| 2025-09-03 | 1.0005          |
|  |  |
| 2025-09-04 | 1.0005          |
|  |  |
| 2025-09-05 | 1.0005          |
|  |  |
| 2025-09-08 | 1.0005          |
|  |  |
| 2025-09-09 | 1.0005          |
|  |  |
| 2025-09-10 | 1.0005          |
|  |  |
| 2025-09-11 | 1.0006          |
|  |  |
| 2025-09-12 | 1.0005          |
|  |  |
| 2025-09-15 | 1.0006          |
|  |  |
| 2025-09-16 | 1.0006          |
|  |  |
| 2025-09-17 | 1.0006          |
|  |  |
| 2025-09-18 | 1.0006          |
|  |  |
| 2025-09-19 | 1.0005          |
|  |  |
| 2025-09-22 | 1.0006          |
|  |  |
| 2025-09-23 | 1.0006          |
|  |  |
| 2025-09-24 | 1.0005          |
|  |  |
| 2025-09-25 | 1.0005          |
|  |  |
| 2025-09-26 | 1.0005          |
|  |  |
| 2025-09-29 | 1.0005          |
|  |  |
| 2025-09-30 | 1.0005          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2025-09-02 | $2514196090.69            | $1436435512.78          |
| 2025-09-03 | $1224317391.67            | $1963974231.96          |
| 2025-09-04 | $1411436415.16            | $1545000979.72          |
| 2025-09-05 | $1051079387.86            | $2422783341.28          |
| 2025-09-08 | $2645827570.99            | $1481636986.30          |
| 2025-09-09 | $3094293890.20            | $907414762.85           |
| 2025-09-10 | $1905050791.45            | $1552169081.50          |
| 2025-09-11 | $1310455095.00            | $1255283119.06          |
| 2025-09-12 | $2106001618.07            | $1891097114.62          |
| 2025-09-15 | $1018969640.49            | $2679953208.32          |
| 2025-09-16 | $1679286906.88            | $1895277802.01          |
| 2025-09-17 | $3701324781.74            | $1430429944.15          |
| 2025-09-18 | $1647078015.24            | $4007074617.38          |
| 2025-09-19 | $3706106419.21            | $1027218734.83          |
| 2025-09-22 | $11648920297.63           | $1149515260.28          |
| 2025-09-23 | $3290674653.83            | $5395971965.96          |
| 2025-09-24 | $2107492645.14            | $5464121055.37          |
| 2025-09-25 | $1727245119.42            | $4468757914.79          |
| 2025-09-26 | $1609067470.74            | $4115937663.81          |
| 2025-09-29 | $1412423123.25            | $2892825721.08          |
| 2025-09-30 | $1282281372.45            | $2252617196.14          |

**Total Gross Subscriptions (Month):** $52093528697.11

**Total Gross Redemptions (Month):** $51235496214.19

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-09-02 | 4.4400%           |
| 2025-09-03 | 4.4400%           |
| 2025-09-04 | 4.4400%           |
| 2025-09-05 | 4.4500%           |
| 2025-09-08 | 4.4500%           |
| 2025-09-09 | 4.4500%           |
| 2025-09-10 | 4.4600%           |
| 2025-09-11 | 4.4600%           |
| 2025-09-12 | 4.4600%           |
| 2025-09-15 | 4.4700%           |
| 2025-09-16 | 4.4700%           |
| 2025-09-17 | 4.4700%           |
| 2025-09-18 | 4.4500%           |
| 2025-09-19 | 4.3800%           |
| 2025-09-22 | 4.3300%           |
| 2025-09-23 | 4.3000%           |
| 2025-09-24 | 4.2700%           |
| 2025-09-25 | 4.2500%           |
| 2025-09-26 | 4.2500%           |
| 2025-09-29 | 4.2500%           |
| 2025-09-30 | 4.2600%           |

**Beneficial/Record Owner Categories**
| Category                                            | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Registered investment company                       |  | 99.9500%         | 0.0000%              |
| Depository institution or other banking institution |  | 0.0500%          | 0.0000%              |

## Part C: Schedule of Portfolio Securities

### Security 1: Money Market Master Portfolio

- **C.1 - Title:** Money Market Master Portfolio 0.000000%
- **C.6 - Investment Category:** Investment Company
- **Identifiers:** C.3 - CUSIP: BLKRK0BBO, C.3 - LEI: N/A
- **C.18 - Value (incl. sponsor support):** $84818090575.50
- **C.18.a - Value (excl. sponsor support):** $84818090575.50
- **C.19 - Percentage of Net Assets:** 100.0000%
- **C.17 - Yield as of Reporting Date:** 0.0000%
- **C.11 - Maturity Date (WAM):** 2025-10-01
- **C.12 - Maturity Date (WAL):** 2025-10-01
- **C.13 - Final Legal Maturity Date:** 2025-10-01
- **Characteristics:** C.9 Eligible Security? Yes, C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.20 Is a Daily Liquid Asset? Yes, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

## N-MFP: Signatures

**Registrant:** BlackRock Funds III

**Date:** 2025-10-06

**By:** /s/ Chuck Pulsfort

**Name of Signing Officer:** Chuck Pulsfort

**Title of Signing Officer:** Assistant Treasurer