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Small Cap Growth Stock Portfolio
NORTHWESTERN MUTUAL SERIES FUND INC

Portfolio moves

Net position changes between two of this fund's N-PORT snapshots. These are differences between point-in-time reports — not a trade log — and share counts can be affected by splits and other corporate actions.

Dec 31, 2025 → Mar 31, 2026

Expand a category to see the positions behind it, ranked by weight.

Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
ENCOMPASS HEALTH CORP 0 64,550 64,550 0.85% $6.24M
PINNACLE FINANCIAL PARTNERS INC 0 57,218 57,218 0.67% $4.93M
TYLER TECHNOLOGIES INC 0 14,165 14,165 0.66% $4.85M
XENON PHARMACEUTICALS INC 0 76,321 76,321 0.61% $4.44M
Q2 HOLDINGS INC 0 87,225 87,225 0.56% $4.13M
KRATOS DEFENSE and SEC SOLTN INC 0 57,300 57,300 0.55% $4.04M
TEREX CORP 0 68,247 68,247 0.55% $4.03M
DIGITALOCEAN HOLDINGS INC 0 46,287 46,287 0.54% $3.97M
CHORD ENERGY CORP 0 27,662 27,662 0.54% $3.93M
GRIFFON CORP 0 52,342 52,342 0.52% $3.80M
NOVANTA INC 0 30,124 30,124 0.49% $3.56M
MERCURY SYSTEMS INC 0 47,361 47,361 0.47% $3.45M
AKAMAI TECHNOLOGIES INC 0 29,603 29,603 0.46% $3.40M
BENCHMARK ELECTRONICS INC 0 59,272 59,272 0.45% $3.32M
COEUR MINING INC 0 166,884 166,884 0.43% $3.13M
SEMTECH CORP 0 39,682 39,682 0.42% $3.05M
SOLARIS OIL IN-A 0 52,876 52,876 0.41% $2.99M
POWER INTEGRATIONS INC 0 56,352 56,352 0.39% $2.89M
WISDOMTREE INVESTMENTS INC 0 194,600 194,600 0.39% $2.83M
LANTHEUS HOLDING 0 34,098 34,098 0.35% $2.59M
GUARDIAN PHARMACY SERVICES INC 0 65,200 65,200 0.34% $2.46M
FIGURE TECHNOLOGY SOLUTIONS INC A 0 69,096 69,096 0.32% $2.35M
VIRIDIAN THERAPEUTICS INC 0 111,485 111,485 0.30% $2.18M
POLARIS INC 0 37,764 37,764 0.28% $2.06M
PLANET LABS PBC A 0 71,501 71,501 0.27% $2.00M
CENTURY ALUMINUM COMPANY 0 28,835 28,835 0.23% $1.69M
APPLIED OPTOELECTRONICS INC 0 17,701 17,701 0.20% $1.50M
YORK SPACE SYSTE 0 59,692 59,692 0.18% $1.32M
RH 0 8,281 8,281 0.16% $1.16M
DIANTHUS THERAPEUTICS INC 0 12,200 12,200 0.14% $1.02M
EQUIPMENTSHARE-A 0 20,100 20,100 0.06% $409.44K
CORVUS PHARMACEUTICALS INC 0 21,800 21,800 0.04% $318.93K
Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
CLEARWATER ANALYTICS HOLDINGS INC 258,090 0 -258,090 0.00% -$6.23M
AVIDITY BIOSCIENCES 84,932 0 -84,932 0.00% -$6.13M
CADENCE BANK 141,565 0 -141,565 0.00% -$6.06M
CARPENTER TECHNOLOGY CORP 18,852 0 -18,852 0.00% -$5.94M
HAMILTON LANE INC - A 39,255 0 -39,255 0.00% -$5.27M
HURON CONSULTING GROUP INC 24,554 0 -24,554 0.00% -$4.25M
INTAPP INC 87,847 0 -87,847 0.00% -$4.03M
SYNOVUS FINL 69,518 0 -69,518 0.00% -$3.48M
UNITY SOFTWARE INC 71,774 0 -71,774 0.00% -$3.17M
AVEPOINT INC 201,465 0 -201,465 0.00% -$2.80M
VERTEX INC - CLASS A 132,139 0 -132,139 0.00% -$2.64M
INSPIRE MEDICAL SYSTEMS INC 27,311 0 -27,311 0.00% -$2.52M
RXO INC 192,897 0 -192,897 0.00% -$2.44M
CCC INTELLIGENT SOLUTIONS HOLD CL A 280,522 0 -280,522 0.00% -$2.23M
ARCHER AVIATION INC A 290,444 0 -290,444 0.00% -$2.18M
D-WAVE QUANTUM INC 77,395 0 -77,395 0.00% -$2.02M
CENTRUS ENERGY CORP CL A 2,459 0 -2,459 0.00% -$596.95K
OKLO INC 8,114 0 -8,114 0.00% -$582.26K
Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
BRIDGEBIO PHARMA INC 116,632 121,026 4,394 1.23% $66.21K
STIFEL FINANCIAL CORP 70,855 86,324 15,469 0.87% -$2.49M
MERIT MEDICAL SYSTEMS INC 84,301 88,846 4,545 0.84% -$1.31M
PERELLA WEINBERG PARTNERS 271,006 312,488 41,482 0.78% $986.38K
SANMINA CORP 39,293 43,010 3,717 0.76% -$320.88K
LIFE TIME GROUP HOLDINGS INC 187,037 202,416 15,379 0.75% $481.64K
COGENT BIOSCIENCES INC 131,020 141,079 10,059 0.74% $776.30K
ALIGNMENT HEALTHCARE INC 278,440 302,732 24,292 0.73% -$165.05K
FTAI INFRASTRUCTURE LLC 753,387 1,047,076 293,689 0.71% $1.70M
DAVE INC 18,028 28,932 10,904 0.69% $1.05M
James Hardie Industries Public Limited Company 256,083 264,575 8,492 0.68% -$302.67K
GUARDANT HEALTH INC 23,348 54,167 30,819 0.68% $2.62M
DXP ENTERPRISES INC 26,856 35,273 8,417 0.67% $1.98M
SUPER GROUP SGHC LTD 426,406 435,831 9,425 0.64% -$388.58K
VERACYTE INC 119,905 142,755 22,850 0.63% -$449.86K
TRANSCAT INC 56,594 62,123 5,529 0.62% $1.35M
APPLIED DIGITAL CORP 89,097 183,178 94,081 0.59% $2.16M
ALKERMES PLC 85,103 114,551 29,448 0.55% $1.67M
IONIS PHARMACEUTICALS INC 44,015 52,863 8,848 0.54% $487.46K
NAVAN INC-CL A 36,738 299,064 262,326 0.54% $3.33M
CRINETICS PHARMACEUTICALS INC 100,523 103,423 2,900 0.51% -$923.02K
APOGEE THERAPEUTICS INC 42,063 43,904 1,841 0.51% $520.48K
OLLIES BARGAIN OUTLET HOLDINGS INC 38,736 39,706 970 0.50% -$591.31K
DISC MEDICINE INC 50,096 56,227 6,131 0.49% -$382.97K
IVANHOE ELECTRIC INC 230,455 263,678 33,223 0.43% -$566.00K
INNODATA INC 55,961 80,080 24,119 0.42% $241.48K
MNTN INC-A 206,308 345,671 139,363 0.42% $578.59K
MIRION TECHNOLOGIES INC-A 77,213 160,189 82,976 0.41% $1.17M
TRANSMEDICS GROUP INC 17,298 29,852 12,554 0.41% $863.29K
URANIUM ENERGY CORP 98,324 218,190 119,866 0.40% $1.80M
ACADIA HEALTHCARE CO INC 115,628 125,212 9,584 0.40% $1.29M
BILL HOLDINGS INC 68,349 75,571 7,222 0.40% -$833.39K
FRESHPET INC 34,253 48,202 13,949 0.39% $754.95K
GENEDX HOLDINGS CORP-A 36,749 38,566 1,817 0.34% -$2.30M
RIOT PLATFORMS INC 143,227 157,292 14,065 0.27% $129.44K
WEALTHFRONT CORP 91,642 152,800 61,158 0.19% $167.99K
Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
BLOOM ENERGY CORP CL A 115,258 114,209 -1,049 2.12% $5.46M
ENSIGN GROUP INC 72,606 61,760 -10,846 1.70% -$203.33K
MODINE MFG CO 69,450 53,630 -15,820 1.59% $2.35M
FIRSTCASH HOLDINGS INC 62,877 56,383 -6,494 1.45% $578.67K
NEXTRACKER INC CL A 87,553 81,108 -6,445 1.34% $2.15M
SPX TECHNOLOGIES INC 48,869 47,581 -1,288 1.30% -$263.39K
VIAVI SOLUTIONS INC 363,551 273,176 -90,375 1.24% $2.61M
CREDO TECHNOLOGY GROUP HOLDING LTD 97,715 92,972 -4,743 1.19% -$5.33M
MAREX GROUP PLC 214,886 186,177 -28,709 1.13% $56.74K
PRIMORIS SVCS CORP 61,215 56,863 -4,352 1.11% $534.45K
FABRINET 15,702 15,083 -619 1.08% $717.28K
MOOG INC-CLASS A 36,009 24,999 -11,010 1.00% -$1.45M
ATMUS FILTRATION TECHNOLOGIES INC 132,665 126,622 -6,043 0.98% $301.69K
ESCO TECHNOLOGIES INC 25,598 25,307 -291 0.97% $2.12M
ISHARES RUSSELL 2000 GROWTH MUTUAL FUND 26,883 22,323 -4,560 0.96% -$1.68M
PROTAGONIST THERAPEUTICS INC 66,961 65,711 -1,250 0.95% $1.08M
AXSOME THERAPEUTICS INC 42,051 40,790 -1,261 0.94% -$785.87K
MADRIGAL PHARMACEUTICALS INC 12,775 12,479 -296 0.89% -$907.01K
MYR GROUP INC/DELAWARE 23,607 22,617 -990 0.87% $1.23M
MKS INSTRUMENTS INC 42,635 27,743 -14,892 0.87% -$437.45K
CARGURUS INC CL A 189,093 185,242 -3,851 0.86% -$944.23K
VERRA MOBILITY CORP 435,240 427,894 -7,346 0.84% -$3.64M
CG ONCOLOGY INC 90,355 88,203 -2,152 0.82% $2.22M
RAMBUS INC 70,827 69,125 -1,702 0.81% -$561.47K
DORMAN PRODUCTS INC 56,787 56,494 -293 0.81% -$1.10M
CHEFS WAREHOUSE INC 100,410 98,560 -1,850 0.80% -$399.16K
CARETRUST REIT INC 168,206 159,103 -9,103 0.80% -$251.20K
SITIME CORP 22,689 16,797 -5,892 0.79% -$2.21M
BJS WHSL CLUB HLDGS INC 59,271 56,530 -2,741 0.76% $227.51K
WHITE MOUNTAINS INS GROUP LTD 2,575 2,516 -59 0.76% $176.62K
ACI WORLDWIDE INC 166,605 133,039 -33,566 0.75% -$2.51M
FTAI AVIATION LTD 60,999 21,930 -39,069 0.73% -$6.63M
AZZ INC 46,258 42,327 -3,931 0.72% $338.45K
NAPCO SECURITY TECHNOLOGIES INC 133,588 131,094 -2,494 0.71% -$406.83K
CLEAN HARBORS INC 21,250 17,960 -3,290 0.70% $166.97K
KONTOOR BRANDS INC 85,970 72,813 -13,157 0.70% -$133.88K
RYDER SYSTEM INC 29,762 24,824 -4,938 0.69% -$614.43K
CHESAPEAKE UTILITIES CORP 40,526 39,616 -910 0.68% -$49.75K
AAON INC 61,664 59,909 -1,755 0.68% $255.59K
PTC THERAPEUTICS INC 73,267 71,868 -1,399 0.67% -$668.99K
UNIVERSAL TECHNI 139,053 135,225 -3,828 0.67% $1.25M
TURNING POINT BRANDS INC 57,149 55,602 -1,547 0.66% -$1.37M
CIRRUS LOGIC INC 42,949 33,141 -9,808 0.66% -$296.61K
TERAWULF INC 330,267 322,482 -7,785 0.64% $858.65K
COVISTA INC 40,851 39,965 -886 0.63% $379.11K
NUVALENT INC-A 45,003 43,878 -1,125 0.61% -$31.55K
ADV ENERGY INDS 14,853 13,921 -932 0.61% $1.38M
URBAN EDGE PROPERTIES 227,831 222,656 -5,175 0.61% $76.59K
WESCO INTL 17,581 16,130 -1,451 0.60% $112.47K
HILLMAN SOLUTIONS CORP 594,526 522,980 -71,546 0.59% -$797.40K
AEROVIRONMENT INC 28,130 23,676 -4,454 0.59% -$2.47M
ZETA GLOBAL HOLDINGS CORP 259,577 250,956 -8,621 0.55% -$1.29M
MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC 19,541 17,988 -1,553 0.55% $647.61K
PATRICK INDUSTRIES INC 49,019 35,872 -13,147 0.54% -$1.33M
VITA COCO CO INC/THE 89,258 81,523 -7,735 0.53% -$825.80K
POOL CORP 19,587 19,239 -348 0.53% -$587.90K
CACTUS INC CL A 83,244 81,370 -1,874 0.53% $51.91K
EVERCORE INC A 14,990 11,947 -3,043 0.49% -$1.53M
NATIONAL VISION HOLDINGS INC 138,630 134,946 -3,684 0.48% -$84.33K
TETRA TECHNOLOGIES INC 466,954 409,709 -57,245 0.48% -$884.64K
HYATT HOTELS CORP CL A 37,424 24,227 -13,197 0.48% -$2.52M
ATRICURE INC 121,295 119,028 -2,267 0.46% -$1.40M
IRHYTHM TECHNOLOGIES INC 35,989 28,380 -7,609 0.46% -$3.04M
CYTOKINETICS INC 49,735 48,084 -1,651 0.43% $9.05K
CASELLA WASTE SYS INC CL A 43,759 39,584 -4,175 0.43% -$1.15M
STEPSTONE GROUP INC CLASS A 97,584 65,030 -32,554 0.42% -$3.16M
ATI INC 67,260 20,746 -46,514 0.41% -$4.70M
COMMVAULT SYSTEMS INC 37,772 37,062 -710 0.39% -$1.85M
BOOT BARN HOLDINGS INC 27,311 18,842 -8,469 0.38% -$2.06M
REVOLUTION MEDICINES INC 32,412 28,046 -4,366 0.37% $145.86K
UPWORK INC 259,075 247,928 -11,147 0.37% -$2.42M
HEALTHEQUITY INC 65,003 31,888 -33,115 0.36% -$3.29M
CABOT CORP 35,126 33,663 -1,463 0.35% $207.01K
INSTALLED BUILDING PRODUCTS INC 13,325 8,952 -4,373 0.32% -$1.08M
CBIZ INC 121,534 88,390 -33,144 0.32% -$3.76M
VAXCYTE INC 42,081 40,203 -1,878 0.32% $394.58K
AGILYSYS INC 37,485 32,804 -4,681 0.32% -$2.12M
COHERENT CORP 40,800 9,422 -31,378 0.31% -$5.29M
BOISE CASCADE CO 31,053 29,371 -1,682 0.30% -$57.71K
INSIGHT ENTERPRISES INC 32,434 30,774 -1,660 0.28% -$580.23K
YETI HOLDINGS INC 98,364 54,964 -43,400 0.27% -$2.33M
GULFPORT ENERGY CORP 18,856 9,217 -9,639 0.27% -$1.97M
LOAR HOLDINGS INC 57,488 25,393 -32,095 0.20% -$2.45M
GENIUS SPORTS LTD 413,634 247,596 -166,038 0.15% -$3.46M
SMITH DOUGLAS HOMES CORP 103,456 65,013 -38,443 0.11% -$902.79K
HIMS & HERS HEAL 59,879 28,592 -31,287 0.08% -$1.35M
EOS ENERGY ENTERPRISES INC 145,040 64,106 -80,934 0.04% -$1.34M
Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
MIRUM PHARMACEUTICALS INC 55,682 55,682 0 0.70% $745.58K
SCHOLAR ROCK HOLDING CORP 86,157 86,157 0 0.58% $440.26K
RADNET INC 75,354 75,354 0 0.58% -$1.16M
KYMERA THERAPEUTICS INC 48,353 48,353 0 0.55% $264.97K
SPYRE THERAPEUTICS INC 74,126 74,126 0 0.51% $1.31M
REMITLY GLOBAL INC 233,676 233,676 0 0.50% $436.97K
TRAVERE THERAPEUTICS INC 95,985 95,985 0 0.39% -$815.87K
IONQ INC 97,726 97,726 0 0.39% -$1.57M
SIRIUSPOINT LTD 126,783 126,783 0 0.37% -$44.37K
CELLDEX THERAPEUTICS INC 85,138 85,138 0 0.37% $388.23K
PORCH GROUP INC 349,865 349,865 0 0.34% -$685.74K
MAGNITE INC 201,253 201,253 0 0.33% -$875.45K
VERICEL CORP 73,322 73,322 0 0.32% -$281.56K
STRUCTURE THERAPEUTICS INC ADR 47,654 47,654 0 0.31% -$1.02M
SOLENO THERAPEUTICS INC 66,796 66,796 0 0.31% -$856.32K
RIGETTI COMPUTING INC A 144,104 144,104 0 0.28% -$1.17M
JANUX THERAPEUTICS INC 102,751 102,751 0 0.20% $10.28K
ENERGY FUELS INC 74,164 74,164 0 0.19% $275.15K
SEZZLE INC 16,357 16,357 0 0.14% -$3.03K
ULTRAGENYX PHARMA INC 42,300 42,300 0 0.12% -$86.72K

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