# EDGAR Filing Document

**Accession Number:** 0000836487
**File Stem:** 0001410368-26-018469
**Filing Date:** 2026-2
**Character Count:** 14872
**Document Hash:** 9c4f85d67bbc15397a084e2f4e0af4cf
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-26-018469.hdr.sgml**: 20260226

**ACCESSION NUMBER**: 0001410368-26-018469

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260226

**DATE AS OF CHANGE**: 20260226

**PERIOD START**: 20251231

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MORGAN STANLEY INSTITUTIONAL FUND INC
- **CENTRAL INDEX KEY:** 0000836487

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

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-05624
- **FILM NUMBER:** 26683295

**BUSINESS ADDRESS:**
- **STREET 1:** 1585 BROADWAY
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036
- **BUSINESS PHONE:** 800-548-7786

**MAIL ADDRESS:**
- **STREET 1:** 1585 BROADWAY
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MORGAN STANLEY DEAN WITTER INSTITUTIONAL FUND INC
- **DATE OF NAME CHANGE:** 19990329

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MORGAN STANLEY INSTITUTIONAL FUND INC
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### US Core Portfolio (Series ID: S000053789)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000169220 | Class I      | MUOIX           |
| C000169221 | Class A      | MUOAX           |
| C000169222 | Class C      | MUOCX           |
| C000169223 | Class R6     | MUOSX           |

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** MORGAN STANLEY INSTITUTIONAL FUND INC

- **b. Investment Company Act file number:** 811-05624

- **c. CIK number of Registrant:** 0000836487

- **d. LEI of Registrant:** 54930067DYRSUSGS4E97

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 1585 Broadway

  - **City:** NEW YORK

  - **State:** NY

  - **Foreign country:** US

  - **Zip / Postal Code:** 10036

  - **Telephone number:** 800-869-6397

**Item A.2. Information about the Series.**

- **a. Name of Series:** US Core Portfolio

- **b. EDGAR series identifier (if any):** S000053789

- **c. LEI of Series:** 54930059T95P1MHDIB68

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2025-12-31

- **b. Date as of which information is reported:** 2025-12-31

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $432005929.26

**Total Liabilities:** $763119.44

**Net Assets:** $431242809.82

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000169220 | 1.88%                | -0.35%               | -0.12%               |
| Class ID C000169221 | 1.85%                | -0.35%               | -0.18%               |
| Class ID C000169222 | 1.78%                | -0.41%               | -0.25%               |
| Class ID C000169223 | 1.88%                | -0.32%               | -0.14%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $60059.97                | $8134024.45                                |
| Month 2  | $1361650.50              | $-2981016.36                               |
| Month 3  | $1346237.87              | $-1689771.45                               |

### Schedule of Portfolio Investments

| Name                       | Title                                                                        | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)   | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Alphabet Inc               | Alphabet Inc                                                                 | CUSIP: 02079K305<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |    137077 | NS      | $42905101.00  | 9.95%             |  |  |  | No            |                  1 | On Loan: No      |
| Amazon.com Inc             | Amazon.com Inc                                                               | CUSIP: 023135106<br>LEI: ZXTILKJKG63JELOEG630 | Long             | EC               | CORP              | US        |    129786 | NS      | $29957204.52  | 6.95%             |  |  |  | No            |                  1 | On Loan: No      |
| Ameriprise Financial Inc   | Ameriprise Financial Inc                                                     | CUSIP: 03076C106<br>LEI: 6ZLKQF7QB6JAEKQS5388 | Long             | EC               | CORP              | US        |     25477 | NS      | $12492392.18  | 2.90%             |  |  |  | No            |                  1 | On Loan: No      |
| Apple Inc                  | Apple Inc                                                                    | CUSIP: 037833100<br>LEI: HWUPKR0MPOU8FGXBT394 | Long             | EC               | CORP              | US        |    111502 | NS      | $30312933.72  | 7.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Brown & Brown Inc          | Brown & Brown Inc                                                            | CUSIP: 115236101<br>LEI: 549300PC8KTJ71XKFY89 | Long             | EC               | CORP              | US        |     82514 | NS      | $6576365.80   | 1.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Cboe Global Markets Inc    | Cboe Global Markets Inc                                                      | CUSIP: 12503M108<br>LEI: 529900RLNSGA90UPEH54 | Long             | EC               | CORP              | US        |     61973 | NS      | $15555223.00  | 3.61%             |  |  |  | No            |                  1 | On Loan: No      |
| CBRE Group Inc             | CBRE Group Inc                                                               | CUSIP: 12504L109<br>LEI: 52990016II9MJ2OSWA10 | Long             | EC               | CORP              | US        |     93272 | NS      | $14997204.88  | 3.48%             |  |  |  | No            |                  1 | On Loan: No      |
| Chevron Corp               | Chevron Corp                                                                 | CUSIP: 166764100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     33238 | NS      | $5065803.58   | 1.17%             |  |  |  | No            |                  1 | On Loan: No      |
| Costco Wholesale Corp      | Costco Wholesale Corp                                                        | CUSIP: 22160K105<br>LEI: 29DX7H14B9S6O3FD6V18 | Long             | EC               | CORP              | US        |      8836 | NS      | $7619636.24   | 1.77%             |  |  |  | No            |                  1 | On Loan: No      |
| Evercore Inc               | Evercore Inc                                                                 | CUSIP: 29977A105<br>LEI: 529900P6KLPT95DW3W58 | Long             | EC               | CORP              | US        |      3249 | NS      | $1105472.25   | 0.26%             |  |  |  | No            |                  1 | On Loan: No      |
| General Electric Co        | General Electric Co                                                          | CUSIP: 369604301<br>LEI: 3C7474T6CDKPR9K6YT90 | Long             | EC               | CORP              | US        |     57852 | NS      | $17820151.56  | 4.13%             |  |  |  | No            |                  1 | On Loan: No      |
| JPMorgan Chase & Co        | JPMorgan Chase & Co                                                          | CUSIP: 46625H100<br>LEI: 8I5DZWZKVSZI1NUHU748 | Long             | EC               | CORP              | US        |     81564 | NS      | $26281552.08  | 6.09%             |  |  |  | No            |                  1 | On Loan: No      |
| LPL Financial Holdings Inc | LPL Financial Holdings Inc                                                   | CUSIP: 50212V100<br>LEI: 549300XROQ4Y8G2L7682 | Long             | EC               | CORP              | US        |     35518 | NS      | $12685964.06  | 2.94%             |  |  |  | No            |                  1 | On Loan: No      |
| Lennar Corp                | Lennar Corp                                                                  | CUSIP: 526057104<br>LEI: 529900G61XVRLX5TJX09 | Long             | EC               | CORP              | US        |      6488 | NS      | $666966.40    | 0.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Eli Lilly & Co             | Eli Lilly & Co                                                               | CUSIP: 532457108<br>LEI: FRDRIPF3EKNDJ2CQJL29 | Long             | EC               | CORP              | US        |     13573 | NS      | $14586631.64  | 3.38%             |  |  |  | No            |                  1 | On Loan: No      |
| Mastercard Inc             | Mastercard Inc                                                               | CUSIP: 57636Q104<br>LEI: AR5L2ODV9HN37376R084 | Long             | EC               | CORP              | US        |     21541 | NS      | $12297326.08  | 2.85%             |  |  |  | No            |                  1 | On Loan: No      |
| Microsoft Corp             | Microsoft Corp                                                               | CUSIP: 594918104<br>LEI: INR2EJN1ERAN0W5ZP974 | Long             | EC               | CORP              | US        |     72706 | NS      | $35162075.72  | 8.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Millrose Properties Inc    | Millrose Properties Inc                                                      | CUSIP: 601137102<br>LEI: N/A                  | Long             | EC               |  | US        |     10164 | NS      | $303598.68    | 0.07%             |  |  |  | No            |                  1 | On Loan: No      |
| Netflix Inc                | Netflix Inc                                                                  | CUSIP: 64110L106<br>LEI: 549300Y7VHGU0I7CE873 | Long             | EC               | CORP              | US        |    128898 | NS      | $12085476.48  | 2.80%             |  |  |  | No            |                  1 | On Loan: No      |
| NVIDIA Corp                | NVIDIA Corp                                                                  | CUSIP: 67066G104<br>LEI: 549300S4KLFTLO7GSQ80 | Long             | EC               | CORP              | US        |    259821 | NS      | $48456616.50  | 11.24%            |  |  |  | No            |                  1 | On Loan: No      |
| Progressive Corp/The       | Progressive Corp/The                                                         | CUSIP: 743315103<br>LEI: 529900TACNVLY9DCR586 | Long             | EC               | CORP              | US        |     50335 | NS      | $11462286.20  | 2.66%             |  |  |  | No            |                  1 | On Loan: No      |
| Shopify Inc                | Shopify Inc                                                                  | CUSIP: 82509L107<br>LEI: 549300HGQ43STJLLP808 | Long             | EC               | CORP              | CA        |     85598 | NS      | $13778710.06  | 3.20%             |  |  |  | No            |                  1 | On Loan: No      |
| TJX Cos Inc/The            | TJX Cos Inc/The                                                              | CUSIP: 872540109<br>LEI: V167QI9I69W364E2DY52 | Long             | EC               | CORP              | US        |    100347 | NS      | $15414302.67  | 3.57%             |  |  |  | No            |                  1 | On Loan: No      |
| Tesla Inc                  | Tesla Inc                                                                    | CUSIP: 88160R101<br>LEI: 54930043XZGB27CTOV49 | Long             | EC               | CORP              | US        |     34938 | NS      | $15712317.36  | 3.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Toll Brothers Inc          | Toll Brothers Inc                                                            | CUSIP: 889478103<br>LEI: 529900JB6IS9MSZGVR44 | Long             | EC               | CORP              | US        |     19605 | NS      | $2650988.10   | 0.61%             |  |  |  | No            |                  1 | On Loan: No      |
| United Rentals Inc         | United Rentals Inc                                                           | CUSIP: 911363109<br>LEI: 5323X5O7RN0NKFCDRY08 | Long             | EC               | CORP              | US        |      8484 | NS      | $6866270.88   | 1.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Valero Energy Corp         | Valero Energy Corp                                                           | CUSIP: 91913Y100<br>LEI: 549300XTO5VR8SKV1V74 | Long             | EC               | CORP              | US        |     27085 | NS      | $4409167.15   | 1.02%             |  |  |  | No            |                  1 | On Loan: No      |
| Waste Management Inc       | Waste Management Inc                                                         | CUSIP: 94106L109<br>LEI: 549300YX8JIID70NFS41 | Long             | EC               | CORP              | US        |     24364 | NS      | $5353014.44   | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Morgan Stanley & Co. LLC   | Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio | CUSIP: 61747C525<br>LEI: 549300OJY9IZ31SGS926 | Long             | STIV             | RF                | US        |   2142686 | NS      | $2142686.23   | 0.50%             |  |  |  | No            |                  1 | On Loan: No      |
| CRH PLC                    | CRH PLC                                                                      | CUSIP: 000000000<br>LEI: 549300MIDJNNTH068E74 | Long             | EC               | CORP              | IE        |     57832 | NS      | $7217433.60   | 1.67%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2026-02-13

**Name of Applicant:** MORGAN STANLEY INSTITUTIONAL FUND INC

**Signature:** Francis Smith

**Name of Signer:** Francis Smith

**Title:** Principal Financial Officer