# EDGAR Filing Document

**Accession Number:** 0000742212
**File Stem:** 0001752724-25-192575
**Filing Date:** 2025-8
**Character Count:** 19813
**Document Hash:** f126bec3f7203efac55279bfb7b4e8a8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-192575.hdr.sgml**: 20250819

**ACCESSION NUMBER**: 0001752724-25-192575

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250630

**FILED AS OF DATE**: 20250819

**DATE AS OF CHANGE**: 20250819

**PERIOD START**: 20251231

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NORTHWESTERN MUTUAL SERIES FUND INC
- **CENTRAL INDEX KEY:** 0000742212

**ORGANIZATION NAME:**
- **EIN:** 391603401
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-03990
- **FILM NUMBER:** 251231257

**BUSINESS ADDRESS:**
- **STREET 1:** 720 E WISCONSIN AVE
- **CITY:** MILWAUKEE
- **STATE:** WI
- **ZIP:** 53202
- **BUSINESS PHONE:** 4142992508

**MAIL ADDRESS:**
- **STREET 1:** 720 EAST WISCONSIN AVE
- **CITY:** MILWAUKEE
- **STATE:** WI
- **ZIP:** 53202

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NORTHWESTERN MUTUAL VARIABLE LIFE SERIES FUND INC
- **DATE OF NAME CHANGE:** 19940830

## Series and Classes Contracts Data

### Large Cap Blend Portfolio (Series ID: S000018229)

| Class ID   | Class Name                | Ticker Symbol   |
|:---|:---|:---|
| C000050277 | Large Cap Blend Portfolio |  |

## Form NPORT-P: Monthly Portfolio Investments Report

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

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

- **a. Name of Registrant:** NORTHWESTERN MUTUAL SERIES FUND INC

- **b. Investment Company Act file number:** 811-03990

- **c. CIK number of Registrant:** 0000742212

- **d. LEI of Registrant:** 549300T1UBX7MDSNZA55

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

  - **Street Address 1:** 720 E WISCONSIN AVE

  - **City:** MILWAUKEE

  - **State:** WI

  - **Foreign country:** US

  - **Zip / Postal Code:** 53202

  - **Telephone number:** 414-271-1444

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

- **a. Name of Series:** Large Cap Blend Portfolio

- **b. EDGAR series identifier (if any):** S000018229

- **c. LEI of Series:** 549300J8IDGQV6XROU84

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

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

- **b. Date as of which information is reported:** 2025-06-30

**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:** $169191237.98

**Total Liabilities:** $133231.24

**Net Assets:** $169058006.74

**Cash Not Reported:** $1407081.82

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000050277 | -1.23%               | 6.62%                | 5.49%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $93627.48                | $-1982321.37                               |
| Month 2  | $-698607.59              | $10586596.36                               |
| Month 3  | $912275.35               | $7877140.44                                |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Intuit Inc                    | Intuit Inc                    | CUSIP: 461202103<br>LEI: VI90HBPH7XSFMB9E4M29 | Long             | EC               | CORP              | US        |      2894 | NS      | $2279401.22   | 1.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Chipotle Mexican Grill Inc    | Chipotle Mexican Grill Inc    | CUSIP: 169656105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     31908 | NS      | $1791634.20   | 1.06%             |  |  |  | No            |                  1 | On Loan: No      |
| Vertex Pharmaceuticals Inc    | Vertex Pharmaceuticals Inc    | CUSIP: 92532F100<br>LEI: 54930015RAQRRZ5ZGJ91 | Long             | EC               | CORP              | US        |      2904 | NS      | $1292860.80   | 0.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Mondelez International Inc    | Mondelez International Inc    | CUSIP: 609207105<br>LEI: 549300DV9GIB88LZ5P30 | Long             | EC               | CORP              | US        |     25675 | NS      | $1731522.00   | 1.02%             |  |  |  | No            |                  1 | On Loan: No      |
| McDonald's Corp               | McDonald's Corp               | CUSIP: 580135101<br>LEI: UE2136O97NLB5BYP9H04 | Long             | EC               | CORP              | US        |     11588 | NS      | $3385665.96   | 2.00%             |  |  |  | No            |                  1 | On Loan: No      |
| United Rentals Inc            | United Rentals Inc            | CUSIP: 911363109<br>LEI: 5323X5O7RN0NKFCDRY08 | Long             | EC               | CORP              | US        |      1543 | NS      | $1162496.20   | 0.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Wells Fargo & Co              | Wells Fargo & Co              | CUSIP: 949746101<br>LEI: PBLD0EJDB5FWOLXP3B76 | Long             | EC               | CORP              | US        |     71189 | NS      | $5703662.68   | 3.37%             |  |  |  | No            |                  1 | On Loan: No      |
| NextEra Energy Inc            | NextEra Energy Inc            | CUSIP: 65339F101<br>LEI: 254900RHL9MEUS5NKX63 | Long             | EC               | CORP              | US        |     32802 | NS      | $2277114.84   | 1.35%             |  |  |  | No            |                  1 | On Loan: No      |
| AbbVie Inc                    | AbbVie Inc                    | CUSIP: 00287Y109<br>LEI: FR5LCKFTG8054YNNRU85 | Long             | EC               | CORP              | US        |     14562 | NS      | $2702998.44   | 1.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Micron Technology Inc         | Micron Technology Inc         | CUSIP: 595112103<br>LEI: B3DXGBC8GAIYWI2Z0172 | Long             | EC               | CORP              | US        |     10163 | NS      | $1252589.75   | 0.74%             |  |  |  | No            |                  1 | On Loan: No      |
| Marriott International Inc/MD | Marriott International Inc/MD | CUSIP: 571903202<br>LEI: 225YDZ14ZO8E1TXUSU86 | Long             | EC               | CORP              | US        |      7422 | NS      | $2027764.62   | 1.20%             |  |  |  | No            |                  1 | On Loan: No      |
| Medtronic PLC                 | Medtronic PLC                 | CUSIP: 000000000<br>LEI: 549300GX3ZBSQWUXY261 | Long             | EC               | CORP              | IE        |     24705 | NS      | $2153534.85   | 1.27%             |  |  |  | No            |                  1 | On Loan: No      |
| Vulcan Materials Co           | Vulcan Materials Co           | CUSIP: 929160109<br>LEI: 549300Q8LSNHAVWBNI21 | Long             | EC               | CORP              | US        |     11873 | NS      | $3096715.86   | 1.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Alphabet Inc                  | Alphabet Inc                  | CUSIP: 02079K305<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |     24188 | NS      | $4262651.24   | 2.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Prologis Inc                  | Prologis Inc                  | CUSIP: 74340W103<br>LEI: 529900DFH19P073LZ636 | Long             | EC               |  | US        |      9664 | NS      | $1015879.68   | 0.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Southern Co/The               | Southern Co/The               | CUSIP: 842587107<br>LEI: 549300FC3G3YU2FBZD92 | Long             | EC               | CORP              | US        |     23007 | NS      | $2112732.81   | 1.25%             |  |  |  | No            |                  1 | On Loan: No      |
| ASML Holding NV               | ASML Holding NV               | CUSIP: 000000000<br>LEI: 724500Y6DUVHQD6OXN27 | Long             | EC               | CORP              | NL        |       853 | NS      | $683585.67    | 0.40%             |  |  |  | No            |                  1 | On Loan: No      |
| Baker Hughes Co               | Baker Hughes Co               | CUSIP: 05722G100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    107727 | NS      | $4130253.18   | 2.44%             |  |  |  | No            |                  1 | On Loan: No      |
| NXP Semiconductors NV         | NXP Semiconductors NV         | CUSIP: 000000000<br>LEI: 724500M9BY5293JDF951 | Long             | EC               | CORP              | NL        |     16655 | NS      | $3638950.95   | 2.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Lowe's Cos Inc                | Lowe's Cos Inc                | CUSIP: 548661107<br>LEI: WAFCR4OKGSC504WU3E95 | Long             | EC               | CORP              | US        |     15539 | NS      | $3447637.93   | 2.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Microsoft Corp                | Microsoft Corp                | CUSIP: 594918104<br>LEI: INR2EJN1ERAN0W5ZP974 | Long             | EC               | CORP              | US        |     30923 | NS      | $15381409.43  | 9.10%             |  |  |  | No            |                  1 | On Loan: No      |
| Stryker Corp                  | Stryker Corp                  | CUSIP: 863667101<br>LEI: 5493002F0SC4JTBU5137 | Long             | EC               | CORP              | US        |      7472 | NS      | $2956147.36   | 1.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Trane Technologies PLC        | Trane Technologies PLC        | CUSIP: 000000000<br>LEI: 549300BURLR9SLYY2705 | Long             | EC               | CORP              | IE        |      2988 | NS      | $1306981.08   | 0.77%             |  |  |  | No            |                  1 | On Loan: No      |
| NVIDIA Corp                   | NVIDIA Corp                   | CUSIP: 67066G104<br>LEI: 549300S4KLFTLO7GSQ80 | Long             | EC               | CORP              | US        |     72430 | NS      | $11443215.70  | 6.77%             |  |  |  | No            |                  1 | On Loan: No      |
| Entergy Corp                  | Entergy Corp                  | CUSIP: 29364G103<br>LEI: 4XM3TW50JULSLG8BNC79 | Long             | EC               | CORP              | US        |     10710 | NS      | $890215.20    | 0.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Walt Disney Co/The            | Walt Disney Co/The            | CUSIP: 254687106<br>LEI: 549300GZKULIZ0WOW665 | Long             | EC               | CORP              | US        |     20488 | NS      | $2540716.88   | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Walmart Inc                   | Walmart Inc                   | CUSIP: 931142103<br>LEI: Y87794H0US1R65VBXU25 | Long             | EC               | CORP              | US        |     37518 | NS      | $3668510.04   | 2.17%             |  |  |  | No            |                  1 | On Loan: No      |
| Exxon Mobil Corp              | Exxon Mobil Corp              | CUSIP: 30231G102<br>LEI: J3WHBG0MTS7O8ZVMDC91 | Long             | EC               | CORP              | US        |     28353 | NS      | $3056453.40   | 1.81%             |  |  |  | No            |                  1 | On Loan: No      |
| Mastercard Inc                | Mastercard Inc                | CUSIP: 57636Q104<br>LEI: AR5L2ODV9HN37376R084 | Long             | EC               | CORP              | US        |      8119 | NS      | $4562390.86   | 2.70%             |  |  |  | No            |                  1 | On Loan: No      |
| Broadcom Inc                  | Broadcom Inc                  | CUSIP: 11135F101<br>LEI: 549300WV6GIDOZJTV909 | Long             | EC               | CORP              | US        |     18507 | NS      | $5101454.55   | 3.02%             |  |  |  | No            |                  1 | On Loan: No      |
| Tesla Inc                     | Tesla Inc                     | CUSIP: 88160R101<br>LEI: 54930043XZGB27CTOV49 | Long             | EC               | CORP              | US        |      5873 | NS      | $1865617.18   | 1.10%             |  |  |  | No            |                  1 | On Loan: No      |
| US Bancorp                    | US Bancorp                    | CUSIP: 902973304<br>LEI: N1GZ7BBF3NP8GI976H15 | Long             | EC               | CORP              | US        |     28267 | NS      | $1279081.75   | 0.76%             |  |  |  | No            |                  1 | On Loan: No      |
| PG&E Corp                     | PG&E Corp                     | CUSIP: 69331C108<br>LEI: 8YQ2GSDWYZXO2EDN3511 | Long             | EC               | CORP              | US        |     55099 | NS      | $768080.06    | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| CSX Corp                      | CSX Corp                      | CUSIP: 126408103<br>LEI: 549300JVQR4N1MMP3Q88 | Long             | EC               | CORP              | US        |     52608 | NS      | $1716599.04   | 1.02%             |  |  |  | No            |                  1 | On Loan: No      |
| Deere & Co                    | Deere & Co                    | CUSIP: 244199105<br>LEI: PWFTNG3EI0Y73OXWDH08 | Long             | EC               | CORP              | US        |      4009 | NS      | $2038536.41   | 1.21%             |  |  |  | No            |                  1 | On Loan: No      |
| Meta Platforms Inc            | Meta Platforms Inc            | CUSIP: 30303M102<br>LEI: BQ4BKCS1HXDV9HN80Z93 | Long             | EC               | CORP              | US        |      9204 | NS      | $6793380.36   | 4.02%             |  |  |  | No            |                  1 | On Loan: No      |
| Oracle Corp                   | Oracle Corp                   | CUSIP: 68389X105<br>LEI: 1Z4GXXU7ZHVWFCD8TV52 | Long             | EC               | CORP              | US        |     15496 | NS      | $3387890.48   | 2.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Edwards Lifesciences Corp     | Edwards Lifesciences Corp     | CUSIP: 28176E108<br>LEI: YA13X31F3V31L8TMPR58 | Long             | EC               | CORP              | US        |     21141 | NS      | $1653437.61   | 0.98%             |  |  |  | No            |                  1 | On Loan: No      |
| Blackstone Inc                | Blackstone Inc                | CUSIP: 09260D107<br>LEI: 5299004LW4QWGZUB8Y96 | Long             | EC               | CORP              | US        |      4129 | NS      | $617615.82    | 0.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Carrier Global Corp           | Carrier Global Corp           | CUSIP: 14448C104<br>LEI: 549300JE3W6CWY2NAN77 | Long             | EC               | CORP              | US        |     31711 | NS      | $2320928.09   | 1.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Morgan Stanley                | Morgan Stanley                | CUSIP: 617446448<br>LEI: IGJSJL3JD5P30I6NJZ34 | Long             | EC               | CORP              | US        |     15694 | NS      | $2210656.84   | 1.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Ameriprise Financial Inc      | Ameriprise Financial Inc      | CUSIP: 03076C106<br>LEI: 6ZLKQF7QB6JAEKQS5388 | Long             | EC               | CORP              | US        |      5573 | NS      | $2974477.29   | 1.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Northrop Grumman Corp         | Northrop Grumman Corp         | CUSIP: 666807102<br>LEI: RIMU48P07456QXSO0R61 | Long             | EC               | CORP              | US        |      5547 | NS      | $2773389.06   | 1.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Apple Inc                     | Apple Inc                     | CUSIP: 037833100<br>LEI: HWUPKR0MPOU8FGXBT394 | Long             | EC               | CORP              | US        |     47976 | NS      | $9843235.92   | 5.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Regeneron Pharmaceuticals Inc | Regeneron Pharmaceuticals Inc | CUSIP: 75886F107<br>LEI: 549300RCBFWIRX3HYQ56 | Long             | EC               | CORP              | US        |      1978 | NS      | $1038450.00   | 0.61%             |  |  |  | No            |                  1 | On Loan: No      |
| Howmet Aerospace Inc          | Howmet Aerospace Inc          | CUSIP: 443201108<br>LEI: 549300HO5WFZUT5N2T22 | Long             | EC               | CORP              | US        |     13923 | NS      | $2591487.99   | 1.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Travelers Cos Inc/The         | Travelers Cos Inc/The         | CUSIP: 89417E109<br>LEI: 549300Y650407RU8B149 | Long             | EC               | CORP              | US        |      6510 | NS      | $1741685.40   | 1.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Eli Lilly & Co                | Eli Lilly & Co                | CUSIP: 532457108<br>LEI: FRDRIPF3EKNDJ2CQJL29 | Long             | EC               | CORP              | US        |      1873 | NS      | $1460059.69   | 0.86%             |  |  |  | No            |                  1 | On Loan: No      |
| Arthur J Gallagher & Co       | Arthur J Gallagher & Co       | CUSIP: 363576109<br>LEI: 54930049QLLMPART6V29 | Long             | EC               | CORP              | US        |     10423 | NS      | $3336610.76   | 1.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Amazon.com Inc                | Amazon.com Inc                | CUSIP: 023135106<br>LEI: ZXTILKJKG63JELOEG630 | Long             | EC               | CORP              | US        |     36328 | NS      | $7969999.92   | 4.71%             |  |  |  | No            |                  1 | On Loan: No      |
| American Express Co           | American Express Co           | CUSIP: 025816109<br>LEI: R4PP93JZOLY261QX3811 | Long             | EC               | CORP              | US        |     13475 | NS      | $4298255.50   | 2.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Eaton Corp PLC                | Eaton Corp PLC                | CUSIP: 000000000<br>LEI: 549300VDIGTMXUNT7H71 | Long             | EC               | CORP              | IE        |     11031 | NS      | $3937956.69   | 2.33%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-07-15

**Name of Applicant:** NORTHWESTERN MUTUAL SERIES FUND INC

**Signature:** Linda Wisniewski

**Name of Signer:** Linda Wisniewski

**Title:** Controller and Chief Accounting Officer