Northwestern Mutual Series Fund, Inc.

NPORT-P false 0000742212 XXXXXXXX S000000045 C000000080 NORTHWESTERN MUTUAL SERIES FUND INC 811-03990 0000742212 549300T1UBX7MDSNZA55 720 E WISCONSIN AVE MILWAUKEE 53202 414-271-1444 Balanced Portfolio S000000045 4F2ZSMZDZU02NP7J8L64 2020-12-31 2020-03-31 N 1966447745.80 134398.89 1966313346.91 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 N Northwestern Mutual Series Fund, Inc. - Select Bond Portfolio 03DZ35VFRGD62UKLL347 Northwestern Mutual Series Fund, Inc. - Select Bond Portfolio 668140759 649823912.94800000 NS USD 861666508.57000000 43.82142398230 Long EC RF US N 1 N N N Northwestern Mutual Series Fund, Inc. - Domestic Equity Portfolio 5493004TKKI7X6F71K84 DOMESTIC EQUITY PORTFOLIO MUTUAL FUND 668140791 41921621.76100000 NS USD 54036970.45000000 2.748136279241 Long EC RF US N 1 N N N Northwestern Mutual Series Fund, Inc. - High Yield Bond Portfolio KUVC5M5XHVXDKYES4T32 Northwestern Mutual Series Fund, Inc. - High Yield Bond Portfolio 668140742 175210640.63600000 NS USD 114762969.62000000 5.836453777845 Long EC RF US N 1 N N N MARRIOTT INTERNATION N/A MARRIOTT INTERNATION 57163TDG1 10000000.00000000 PA USD 9985591.10000000 0.507833154654 Long STIV CORP US N 2 2020-04-16 None 0.00000000 N N N N N N State Street Global Advisors 549300BZ5TGIFZUZDZ37 State Street Institutional US Government Money Market Fund 857492706 59738246.98000000 NS USD 59738246.98000000 3.038083786283 Long STIV RF US N 1 N N N Northwestern Mutual Series Fund, Inc. - Focused Appreciation Portfolio 5493007QO6Z6UMWHLZ04 Northwestern Mutual Series Fund, Inc. - Focused Appreciation Portfolio 668140775 22502543.99900000 NS USD 63299656.27000000 3.219204933408 Long EC RF US N 1 N N N FED HOME LN DISCOUNT NT N/A Federal Home Loan Bank Discount Notes 313384VV8 3000000.00000000 PA USD 2999889.18000000 0.152564146742 Long DBT USGSE US N 2 2020-04-20 None 0.00000000 N N N N N N iShares Core S&P 500 ETF 5493007M4YMN8XL48C14 iShares Core S&P 500 ETF 464287200 5000.00000000 NS USD 1292000.00000000 0.065706719736 Long EC RF US N 1 N N N Northwestern Mutual Series Fund, Inc. - Mid Cap Growth Stock Portfolio LIP0ME8UWTR611J45283 Northwestern Mutual Series Fund, Inc. - Mid Cap Growth Stock Portfolio 668140866 28854013.50400000 NS USD 74876165.04000000 3.807946742449 Long EC RF US N 1 N N N Northwestern Mutual Series Fund, Inc. - MFS Research International Core Portfolio 549300ZQ5NCCGE71IX14 Northwestern Mutual Series Fund, Inc. - MFS Research International Core Portfolio 668140403 118277751.87100000 NS USD 102783366.38000000 5.227211956910 Long EC RF US N 1 N N N Northwestern Mutual Series Fund, Inc. - Mid Cap Value Portfolio 8TRVIGMWHSWZVXP7PI34 Northwestern Mutual Series Fund, Inc. - Mid Cap Value Portfolio 668140783 62017196.11500000 NS USD 74296600.95000000 3.778472086697 Long EC RF US N 1 N N N iShares Core S&P Mid-Cap ETF 549300ODQWH5PC0IUZ78 iShares Core S&P Mid-Cap ETF 464287507 93500.00000000 NS USD 13450910.00000000 0.684067471806 Long EC RF US N 1 N N N iShares Core MSCI EAFE ETF 5493009FT582MI7Y3I36 iShares Core MSCI EAFE ETF 46432F842 189000.00000000 NS USD 9442051.04000000 0.480190558378 Long EC RF US N 1 N N N SOUTHERN COMPANY N/A SOUTHERN COMPANY 84262LD64 10000000.00000000 PA USD 9995426.70000000 0.508333359772 Long STIV CORP US N 2 2020-04-06 None 0.00000000 N N N N N N SHORT TERM BD PORT MUTUAL FUND N/A SHORT TERM BD PORT MUTUAL FUND 668140601 9775171.07000000 NS USD 10156402.74000000 0.516520052918 Long EC RF US N 1 N N N Northwestern Mutual Series Fund, Inc. - MFS Emerging Markets Equity Portfolio 549300B2SFS01R9MCJ10 Northwestern Mutual Series Fund, Inc. - MFS Emerging Markets Equity Portfolio 668140502 20764216.15400000 NS USD 17130478.33000000 0.871197785282 Long EC RF US N 1 N N N Northwestern Mutual Series Fund, Inc. - International Equity Portfolio 5493009J2EF7GK480170 Northwestern Mutual Series Fund, Inc. - International Equity Portfolio 668140692 27863328.37100000 NS USD 34745570.48000000 1.767041378964 Long EC RF US N 1 N N N AMERN CENTY LARGE CO VALUE POR MUTUAL FUND 6UWSQM9V60QIAUKWH425 AMERN CENTY LARGE CO VALUE POR MUTUAL FUND 668140106 71593789.30500000 NS USD 55413592.92000000 2.818146609597 Long EC RF US N 1 N N N iShares Core U.S. Aggregate Bond ETF 549300F7VSXTKBGHJE47 iShares Core U.S. Aggregate Bond ETF 464287226 121500.00000000 NS USD 14017455.00000000 0.712880020980 Long EC RF US N 1 N N N FED HOME LN DISCOUNT NT N/A Federal Home Loan Bank Discount Notes 313384A33 3000000.00000000 PA USD 2999092.50000000 0.152523630311 Long DBT USGSE US N 2 2020-07-31 None 0.00000000 N N N N N N Northwestern Mutual Series Fund, Inc. - Equity Income Portfolio 549300X5C6L2WKRYCD90 EQUITY INCOME PORTFOLIO MUTUAL FUND 668140767 41433492.39100000 NS USD 52703402.32000000 2.680315545984 Long EC RF US N 1 N N N iShares Russell 2000 ETF 549300O80OAR5VTWR172 iShares Russell 2000 ETF 464287655 82200.00000000 NS USD 9408612.00000000 0.478489962690 Long EC RF US N 1 N N N Northwestern Mutual Series Fund, Inc. - T. Rowe Price Small Cap Value Portfolio 5493006BEZYY47A02J59 Northwestern Mutual Series Fund, Inc. - T. Rowe Price Small Cap Value Portfolio 668140817 11409073.08900000 NS USD 17022337.05000000 0.865698088087 Long EC RF US N 1 N N N Northwestern Mutual Series Fund, Inc. - International Growth Portfolio A7EFFZCFPQNSS1P3HZ68 Northwestern Mutual Series Fund, Inc. - International Growth Portfolio 668140684 29020119.69600000 NS USD 44458823.37000000 2.261024339781 Long EC RF US N 1 N N N Northwestern Mutual Series Fund, Inc. - Small Cap Growth Stock Portfolio YTR2S467AP5XPLF6CQ13 Northwestern Mutual Series Fund, Inc. - Small Cap Growth Stock Portfolio 668140825 9246088.74100000 NS USD 18593884.46000000 0.945621637020 Long EC RF US N 1 N N N iShares Russell Mid-Cap ETF 549300RVM4H7425YNW89 iShares Russell Mid-Cap ETF 464287499 12400.00000000 NS USD 535308.00000000 0.027223941740 Long EC RF US N 1 N N N Chicago Mercantile Exchange SNZ2OJLFK8MNNCLQOF39 S+P500 EMINI FUT JUN20 XCME 20200619 000000000 265.00000000 NC USD 1312478.94000000 0.066748208878 N/A DE US N 1 Chicago Mercantile Exchange SNZ2OJLFK8MNNCLQOF39 Long E-mini S&P 500 Index ESM0 Index 2020-06-19 32736046.06000000 USD 1312478.94000000 N N N Northwestern Mutual Series Fund, Inc. - Large Cap Core Stock Portfolio VR6JA5TLPSU3FJG4YL55 Northwestern Mutual Series Fund, Inc. - Large Cap Core Stock Portfolio 668140841 44051910.24500000 NS USD 57972313.88000000 2.948274443190 Long EC RF US N 1 N N N Northwestern Mutual Series Fund, Inc. - Growth Stock Portfolio SZG5ML0R3BIC0KK1SI27 Northwestern Mutual Series Fund, Inc. - Growth Stock Portfolio 668140858 44313881.04300000 NS USD 122439253.32000000 6.226843423120 Long EC RF US N 1 N N N Northwestern Mutual Series Fund Inc - Capital Guardian Large Cap Blend Portfolio 549300J8IDGQV6XROU84 Northwestern Mutual Series Fund Inc - Capital Guardian Large Cap Blend Portfolio 668140205 60727130.99900000 NS USD 56719140.35000000 2.884542305484 Long EC RF US N 1 N N N 2020-04-27 NORTHWESTERN MUTUAL SERIES FUND INC Barbara Courtney Barbara Courtney Controller and Chief Accounting Officer XXXX