NPORT-P false 0000742212 XXXXXXXX S000000056 C000000091 NORTHWESTERN MUTUAL SERIES FUND INC 811-03990 0000742212 549300T1UBX7MDSNZA55 720 E WISCONSIN AVE MILWAUKEE 53202 414-271-1444 Growth Stock Portfolio S000000056 SZG5ML0R3BIC0KK1SI27 2020-12-31 2020-03-31 N 913169177.58 396646.28 912772531.30 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 Alibaba Group Holding Ltd 5493001NTNQJDH60PM02 01609W102 219733.00000000 NS USD 42733673.84000000 4.681744068167 Long EC CORP KY N 1 N N N IAC/InterActiveCorp 15OMOPB0A8K0EFUVD031 44919P508 26101.00000000 NS USD 4678082.23000000 0.512513476203 Long EC CORP US N 1 N N N Chipotle Mexican Grill Inc N/A 169656105 2421.00000000 NS USD 1584302.40000000 0.173570341533 Long EC CORP US N 1 N N N Alexion Pharmaceuticals Inc M1YXUUZR0EIMU8T0EM75 015351109 28531.00000000 NS USD 2561798.49000000 0.280661216475 Long EC CORP US N 1 N N N NIKE Inc 787RXPR0UX0O0XUXPZ81 654106103 41322.00000000 NS USD 3418982.28000000 0.374571118516 Long EC CORP US N 1 N N N L3Harris Technologies Inc 549300UTE50ZMDBG8A20 502431109 15872.00000000 NS USD 2858864.64000000 0.313206690820 Long EC CORP US N 1 N N N Sempra Energy PBBKGKLRK5S5C0Y4T545 816851109 7691.00000000 NS USD 869006.09000000 0.095205109728 Long EC CORP US N 1 N N N Ferrari NV 549300RIVY5EX8RCON76 000000000 395.00000000 NS USD 60265.15000000 0.006602428089 Long EC CORP NL N 1 N N N Facebook Inc BQ4BKCS1HXDV9HN80Z93 30303M102 334881.00000000 NS USD 55858150.80000000 6.119613472640 Long EC CORP US N 1 N N N Norfolk Southern Corp 54930036C8MWP850MI84 655844108 10628.00000000 NS USD 1551688.00000000 0.169997227873 Long EC CORP US N 1 N N N Alphabet Inc 5493006MHB84DD0ZWV18 02079K305 9816.00000000 NS USD 11405701.20000000 1.249566656410 Long EC CORP US N 1 N N N CoStar Group Inc N/A 22160N109 8837.00000000 NS USD 5189174.77000000 0.568506894330 Long EC CORP US N 1 N N N Global Payments Inc 549300NOMHGVQBX6S778 37940X102 112627.00000000 NS USD 16244192.21000000 1.779653928330 Long EC CORP US N 1 N N N TD Ameritrade Holding Corp ZI85ER3E6RXD4HPHW309 87236Y108 42372.00000000 NS USD 1468613.52000000 0.160895893515 Long EC CORP US N 1 N N N Lam Research Corp 549300I4GMO6D34U1T02 512807108 12339.00000000 NS USD 2961360.00000000 0.324435705332 Long EC CORP US N 1 N N N Concho Resources Inc SYHS7HRDXLL4I0IQ8776 20605P101 795.00000000 NS USD 34065.75000000 0.003732118225 Long EC CORP US N 1 N N N Charles Schwab Corp/The 549300VSGCJ7E698NM85 808513105 34120.00000000 NS USD 1147114.40000000 0.125673632878 Long EC CORP US N 1 N N N QUALCOMM Inc H1J8DDZKZP6H7RWC0H53 747525103 16990.00000000 NS USD 1149373.50000000 0.125921131561 Long EC CORP US N 1 N N N Biogen Inc W8J5WZB5IY3K0NDQT671 09062X103 4400.00000000 NS USD 1392072.00000000 0.152510286217 Long EC CORP US N 1 N N N Ross Stores Inc 549300ENZFLPGRDFZQ60 778296103 88584.00000000 NS USD 7704150.48000000 0.844038379313 Long EC CORP US N 1 N N N Marriott International Inc/MD 225YDZ14ZO8E1TXUSU86 571903202 25285.00000000 NS USD 1891570.85000000 0.207233542326 Long EC CORP US N 1 N N N Pioneer Natural Resources Co FY8JBF7CCL2VE4F1B628 723787107 2877.00000000 NS USD 201821.55000000 0.022110826419 Long EC CORP US N 1 N N N Cintas Corp N/A 172908105 4106.00000000 NS USD 711241.32000000 0.077920982020 Long EC CORP US N 1 N N N Netflix Inc 549300Y7VHGU0I7CE873 64110L106 59463.00000000 NS USD 22328356.50000000 2.446212581375 Long EC CORP US N 1 N N N Marvell Technology Group Ltd 8DF36O58U3QIHUCGZB18 000000000 172124.00000000 NS USD 3895166.12000000 0.426740067917 Long EC CORP BM N 1 N N N Restaurant Brands International Inc 5299009RXTX9DN9AKJ98 76131D103 4252.00000000 NS USD 170207.56000000 0.018647313998 Long EC CORP CA N 1 N N N UnitedHealth Group Inc 549300GHBMY8T5GXDE41 91324P102 75724.00000000 NS USD 18884051.12000000 2.068867157199 Long EC CORP US N 1 N N N Morgan Stanley IGJSJL3JD5P30I6NJZ34 617446448 98196.00000000 NS USD 3338664.00000000 0.365771743289 Long EC CORP US N 1 N N N Regeneron Pharmaceuticals Inc 549300RCBFWIRX3HYQ56 75886F107 1500.00000000 NS USD 732435.00000000 0.080242883619 Long EC CORP US N 1 N N N General Electric Co 3C7474T6CDKPR9K6YT90 369604103 107786.00000000 NS USD 855820.84000000 0.093760582253 Long EC CORP US N 1 N N N Motorola Solutions Inc 6S552MUG6KGJVEBSEC55 620076307 565.00000000 NS USD 75099.80000000 0.008227657759 Long EC CORP US N 1 N N N Paycom Software Inc 254900LSB0HNJUDC6Q18 70432V102 8173.00000000 NS USD 1651027.73000000 0.180880523173 Long EC CORP US N 1 N N N Citigroup Inc 6SHGI4ZSSLCXXQSBB395 172967424 4015.00000000 NS USD 169111.80000000 0.018527266564 Long EC CORP US N 1 N N N American Tower Corp 5493006ORUSIL88JOE18 03027X100 1152.00000000 NS USD 250848.00000000 0.027481983889 Long EC US N 1 N N N Teleflex Inc UUL85LWXB4NGSWWXIQ25 879369106 691.00000000 NS USD 202366.26000000 0.022170502842 Long EC CORP US N 1 N N N Agilent Technologies Inc QUIX8Y7A2WP0XRMW7G29 00846U101 986.00000000 NS USD 70617.32000000 0.007736573744 Long EC CORP US N 1 N N N Centene Corp 549300Z7JJ4TQSQGT333 15135B101 144618.00000000 NS USD 8591755.38000000 0.941281106231 Long EC CORP US N 1 N N N Electronic Arts Inc 549300O7A67PUEYKDL45 285512109 17185.00000000 NS USD 1721421.45000000 0.188592600124 Long EC CORP US N 1 N N N Incyte Corp 549300Z4WN6JVZ3T4680 45337C102 15300.00000000 NS USD 1120419.00000000 0.122748983079 Long EC CORP US N 1 N N N Becton Dickinson and Co ICE2EP6D98PQUILVRZ91 075887109 38268.00000000 NS USD 8792838.36000000 0.963311017639 Long EC CORP US N 1 N N N Hilton Worldwide Holdings Inc 549300HVGPK36ICB0B89 43300A203 29647.00000000 NS USD 2023111.28000000 0.221644627837 Long EC CORP US N 1 N N N Mastercard Inc AR5L2ODV9HN37376R084 57636Q104 113225.00000000 NS USD 27350631.00000000 2.996434496231 Long EC CORP US N 1 N N N S&P Global Inc Y6X4K52KMJMZE7I7MY94 78409V104 25779.00000000 NS USD 6317143.95000000 0.692083047350 Long EC CORP US N 1 N N N Amgen Inc 62QBXGPJ34PQ72Z12S66 031162100 3673.00000000 NS USD 744627.29000000 0.081578626050 Long EC CORP US N 1 N N N Dollar Tree Inc 549300PMSTQITB1WHR43 256746108 8298.00000000 NS USD 609654.06000000 0.066791455603 Long EC CORP US N 1 N N N Booking Holdings Inc FXM8FAOHMYDIPD38UZ17 09857L108 6063.00000000 NS USD 8156675.16000000 0.893615318197 Long EC CORP US N 1 N N N Sherwin-Williams Co/The Z15BMIOX8DDH0X2OBP21 824348106 3357.00000000 NS USD 1542608.64000000 0.169002526599 Long EC CORP US N 1 N N N Aptiv PLC N/A 000000000 6253.00000000 NS USD 307897.72000000 0.033732141299 Long EC CORP JE N 1 N N N Fiserv Inc GI7UBEJLXYLGR2C7GV83 337738108 143034.00000000 NS USD 13586799.66000000 1.488519778377 Long EC CORP US N 1 N N N Spotify Technology SA 549300B4X0JHWV0DTD60 000000000 20822.00000000 NS USD 2528623.68000000 0.277026706357 Long EC CORP LU N 1 N N N Constellation Brands Inc 5493005GKEG8QCVY7037 21036P108 3496.00000000 NS USD 501186.56000000 0.054908155407 Long EC CORP US N 1 N N N Thermo Fisher Scientific Inc HCHV7422L5HDJZCRFL38 883556102 37409.00000000 NS USD 10609192.40000000 1.162304083021 Long EC CORP US N 1 N N N Texas Instruments Inc WDJNR2L6D8RWOEB8T652 882508104 15781.00000000 NS USD 1576995.33000000 0.172769805830 Long EC CORP US N 1 N N N Chubb Ltd E0JAN6VLUDI1HITHT809 000000000 19839.00000000 NS USD 2215817.91000000 0.242756857159 Long EC CORP CH N 1 N N N Amazon.com Inc ZXTILKJKG63JELOEG630 023135106 50613.00000000 NS USD 98681178.36000000 10.81114680559 Long EC CORP US N 1 N N N DocuSign Inc 549300Q7PVDWRZ39JG09 256163106 33253.00000000 NS USD 3072577.20000000 0.336620252542 Long EC CORP US N 1 N N N Atlassian Corp PLC 549300AGBII4MWBVJY22 000000000 21030.00000000 NS USD 2886577.80000000 0.316242842659 Long EC CORP GB N 1 N N N MSCI Inc 549300HTIN2PD78UB763 55354G100 5200.00000000 NS USD 1502592.00000000 0.164618450761 Long EC CORP US N 1 N N N Union Pacific Corp 549300LMMRSZZCZ8CL11 907818108 16472.00000000 NS USD 2323210.88000000 0.254522435802 Long EC CORP US N 1 N N N Yum! Brands Inc 549300JE8XHZZ7OHN517 988498101 8517.00000000 NS USD 583670.01000000 0.063944738692 Long EC CORP US N 1 N N N Coupa Software Inc 549300Q95ICR2GFL2K37 22266L106 1785.00000000 NS USD 249418.05000000 0.027325323829 Long EC CORP US N 1 N N N Northrop Grumman Corp RIMU48P07456QXSO0R61 666807102 11503.00000000 NS USD 3480232.65000000 0.381281483683 Long EC CORP US N 1 N N N Equifax Inc 5493004MCF8JDC86VS77 294429105 24508.00000000 NS USD 2927480.60000000 0.320724002926 Long EC CORP US N 1 N N N Intuitive Surgical Inc 54930052SRG011710797 46120E602 26377.00000000 NS USD 13062154.17000000 1.431041548916 Long EC CORP US N 1 N N N Tencent Holdings Ltd 254900N4SLUMW4XUYY11 000000000 518400.00000000 NS 25277999.17000000 2.769364579146 Long EC CORP KY N 2 N N N McDonald's Corp UE2136O97NLB5BYP9H04 580135101 7400.00000000 NS USD 1223590.00000000 0.134052018223 Long EC CORP US N 1 N N N Abbott Laboratories HQD377W2YR662HK5JX27 002824100 8146.00000000 NS USD 642800.86000000 0.070422897048 Long EC CORP US N 1 N N N Advanced Micro Devices Inc R2I72C950HOYXII45366 007903107 86800.00000000 NS USD 3947664.00000000 0.432491542485 Long EC CORP US N 1 N N N Veeva Systems Inc 549300YZEXPDB92M2F02 922475108 7737.00000000 NS USD 1209834.69000000 0.132545037072 Long EC CORP US N 1 N N N Citrix Systems Inc HCTKJGUQOPZ5NBK7NP58 177376100 2600.00000000 NS USD 368030.00000000 0.040320012640 Long EC CORP US N 1 N N N Zoetis Inc 549300HD9Q1LOC9KLJ48 98978V103 24012.00000000 NS USD 2825972.28000000 0.309603124885 Long EC CORP US N 1 N N N Air Products & Chemicals Inc 7QEON6Y1RL5XR3R1W237 009158106 476.00000000 NS USD 95014.36000000 0.010409423678 Long EC CORP US N 1 N N N Anthem Inc 8MYN82XMYQH89CTMTH67 036752103 32389.00000000 NS USD 7353598.56000000 0.805633200807 Long EC CORP US N 1 N N N Cigna Corp 549300VIWYMSIGT1U456 125523100 103577.00000000 NS USD 18351772.86000000 2.010552709541 Long EC CORP US N 1 N N N Roper Technologies Inc 54930003T4SXCIWVXY35 776696106 19252.00000000 NS USD 6002966.12000000 0.657662880307 Long EC CORP US N 1 N N N Marsh & McLennan Cos Inc 549300XMP3KDCKJXIU47 571748102 36843.00000000 NS USD 3185445.78000000 0.348985718869 Long EC CORP US N 1 N N N Canadian Pacific Railway Ltd N/A 13645T100 9249.00000000 NS USD 2030987.91000000 0.222507562438 Long EC CORP CA N 1 N N N Honeywell International Inc ISRPG12PN4EIEOEMW547 438516106 11741.00000000 NS USD 1570828.39000000 0.172094178575 Long EC CORP US N 1 N N N FleetCor Technologies Inc 549300DG6RR0NQSFLN74 339041105 9993.00000000 NS USD 1864094.22000000 0.204223303843 Long EC CORP US N 1 N N N KLA Corp 549300H0BF5JCG96TJ81 482480100 2636.00000000 NS USD 378898.64000000 0.041510740848 Long EC CORP US N 1 N N N Lululemon Athletica Inc 549300D9GZ4BMLDW5T40 550021109 24679.00000000 NS USD 4677904.45000000 0.512493999281 Long EC CORP US N 1 N N N NVIDIA Corp 549300S4KLFTLO7GSQ80 67066G104 34680.00000000 NS USD 9141648.00000000 1.001525318359 Long EC CORP US N 1 N N N Splunk Inc 549300XGDSGBP6UEI867 848637104 55302.00000000 NS USD 6980771.46000000 0.764787635541 Long EC CORP US N 1 N N N TJX Cos Inc/The V167QI9I69W364E2DY52 872540109 39224.00000000 NS USD 1875299.44000000 0.205450906517 Long EC CORP US N 1 N N N JPMorgan Chase & Co 8I5DZWZKVSZI1NUHU748 46625H100 1570.00000000 NS USD 141347.10000000 0.015485468192 Long EC CORP US N 1 N N N Danaher Corp S4BKK9OTCEWQ3YHPFM11 235851102 83815.00000000 NS USD 11600834.15000000 1.270944704424 Long EC CORP US N 1 N N N United Airlines Holdings Inc N/A 910047109 5709.00000000 NS USD 180118.95000000 0.019733169417 Long EC CORP US N 1 N N N Kansas City Southern 5493008C12PZMWP3WY03 485170302 10552.00000000 NS USD 1342003.36000000 0.147024950245 Long EC CORP US N 1 N N N Goldman Sachs Group Inc/The 784F5XWPLTWKTBV3E584 38141G104 14473.00000000 NS USD 2237381.07000000 0.245119237627 Long EC CORP US N 1 N N N Wynn Resorts Ltd 254900CEKKWIHTEAB172 983134107 5351.00000000 NS USD 322076.69000000 0.035285537081 Long EC CORP US N 1 N N N Applied Materials Inc 41BNNE1AFPNAZELZ6K07 038222105 80820.00000000 NS USD 3703172.40000000 0.405705942391 Long EC CORP US N 1 N N N Seattle Genetics Inc N/A 812578102 6871.00000000 NS USD 792775.98000000 0.086853619364 Long EC CORP US N 1 N N N PayPal Holdings Inc 5493005X2GO78EFZ3E94 70450Y103 158770.00000000 NS USD 15200639.80000000 1.665326166021 Long EC CORP US N 1 N N N Fortive Corp 549300MU9YQJYHDQEF63 34959J108 4956.00000000 NS USD 273521.64000000 0.029966024460 Long EC CORP US N 1 N N N Trip.com Group Ltd 2549004RMYDSRQL4KW41 89677Q107 18662.00000000 NS USD 437623.90000000 0.047944464255 Long EC CORP KY N 1 N N N Microsoft Corp INR2EJN1ERAN0W5ZP974 594918104 337256.00000000 NS USD 53188643.76000000 5.827152103739 Long EC CORP US N 1 N N N IHS Markit Ltd 549300HLPTRASHS0E726 000000000 6714.00000000 NS USD 402840.00000000 0.044133668157 Long EC CORP BM N 1 N N N Match Group Inc 549300BIJKT86CPCKK96 57665R106 1128.00000000 NS USD 74493.12000000 0.008161192131 Long EC CORP US N 1 N N N Workday Inc 549300J0DYC0N31V7G13 98138H101 64673.00000000 NS USD 8421718.06000000 0.922652443101 Long EC CORP US N 1 N N N AbbVie Inc FR5LCKFTG8054YNNRU85 00287Y109 8571.00000000 NS USD 653024.49000000 0.071542960333 Long EC CORP US N 1 N N N VMware Inc 549300BUDHS3LRWBE814 928563402 26878.00000000 NS USD 3254925.80000000 0.356597694210 Long EC CORP US N 1 N N N Stryker Corp 5493002F0SC4JTBU5137 863667101 88109.00000000 NS USD 14669267.41000000 1.607110962148 Long EC CORP US N 1 N N N Alphabet Inc 5493006MHB84DD0ZWV18 02079K107 43502.00000000 NS USD 50584560.62000000 5.541858336595 Long EC CORP US N 1 N N N Automatic Data Processing Inc HGBOLILQXWER4SAL2I23 053015103 3402.00000000 NS USD 464985.36000000 0.050942085136 Long EC CORP US N 1 N N N NextEra Energy Inc N/A 65339F101 435.00000000 NS USD 104669.70000000 0.011467227201 Long EC CORP US N 1 N N N State Street Corp 549300ZFEEJ2IP5VME73 857477103 24096.00000000 NS USD 1283593.92000000 0.140625826915 Long EC CORP US N 1 N N N Vertex Pharmaceuticals Inc 54930015RAQRRZ5ZGJ91 92532F100 79370.00000000 NS USD 18886091.50000000 2.069090693724 Long EC CORP US N 1 N N N Philip Morris International Inc HL3H1H2BGXWVG3BSWR90 718172109 395.00000000 NS USD 28819.20000000 0.003157325512 Long EC CORP US N 1 N N N American International Group Inc ODVCVCQG2BP6VHV36M30 026874784 17781.00000000 NS USD 431189.25000000 0.047239507677 Long EC CORP US N 1 N N N Intuit Inc VI90HBPH7XSFMB9E4M29 461202103 78362.00000000 NS USD 18023260.00000000 1.974562049356 Long EC CORP US N 1 N N N Apple Inc HWUPKR0MPOU8FGXBT394 037833100 113708.00000000 NS USD 28914807.32000000 3.167799898493 Long EC CORP US N 1 N N N Linde PLC 8945002PAZHZLBGKGF02 000000000 16376.00000000 NS USD 2833048.00000000 0.310378314733 Long EC CORP IE N 1 N N N ServiceNow Inc 549300HJTQM36M0E1G39 81762P102 72120.00000000 NS USD 20668149.60000000 2.264326422111 Long EC CORP US N 1 N N N State Street Global Advisors 549300BZ5TGIFZUZDZ37 857492706 2085137.54000000 NS USD 2085137.54000000 0.228439996658 Long STIV RF US N 1 N N N HCA Healthcare Inc 529900PH4ZGUH2MNEU89 40412C101 30469.00000000 NS USD 2737639.65000000 0.299925726960 Long EC CORP US N 1 N N N Willis Towers Watson PLC 549300WHC56FF48KL350 000000000 50986.00000000 NS USD 8659972.10000000 0.948754679072 Long EC CORP IE N 1 N N N Dollar General Corp OPX52SQVOZI8IVSWYU66 256677105 77493.00000000 NS USD 11702217.93000000 1.282051938321 Long EC CORP US N 1 N N N Boeing Co/The RVHJWBXLJ1RFUBSY1F30 097023105 29306.00000000 NS USD 4370696.84000000 0.478837463894 Long EC CORP US N 1 N N N Maxim Integrated Products Inc SO0H5YEO14Y4PVKQH532 57772K101 16985.00000000 NS USD 825640.85000000 0.090454173596 Long EC CORP US N 1 N N N Exact Sciences Corp 549300VM3X1FYD4N9Z14 30063P105 25387.00000000 NS USD 1472446.00000000 0.161315765922 Long EC CORP US N 1 N N N salesforce.com Inc RCGZFPDMRW58VJ54VR07 79466L302 122682.00000000 NS USD 17663754.36000000 1.935175934232 Long EC CORP US N 1 N N N Visa Inc 549300JZ4OKEHW3DPJ59 92826C839 209494.00000000 NS USD 33753673.28000000 3.697928248555 Long EC CORP US N 1 N N N Fidelity National Information Services Inc 6WQI0GK1PRFVBA061U48 31620M106 128638.00000000 NS USD 15647526.32000000 1.714285408842 Long EC CORP US N 1 N N N Intercontinental Exchange Inc 5493000F4ZO33MV32P92 45866F104 61942.00000000 NS USD 5001816.50000000 0.547980611650 Long EC CORP US N 1 N N N Synopsys Inc QG7T915N9S0NY5UKNE63 871607107 24726.00000000 NS USD 3184461.54000000 0.348877889156 Long EC CORP US N 1 N N N 2020-04-27 NORTHWESTERN MUTUAL SERIES FUND INC Barbara Courtney Barbara Courtney Controller and Chief Accounting Officer XXXX