FundWatcher
Large Cap Core 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
MICRON TECHNOLOGY INC 0 20,356 20,356 0.90% $6.88M
KLA CORP 0 4,406 4,406 0.85% $6.49M
MARVELL TECHNOLOGY INC 0 49,177 49,177 0.64% $4.87M
EATON CORP PLC 0 12,097 12,097 0.57% $4.33M
SPDR S&P 500 ETF Trust 0 6,267 6,267 0.53% $4.08M
COTERRA ENERGY INC 0 96,748 96,748 0.45% $3.40M
CMS ENERGY CORP 0 43,555 43,555 0.44% $3.38M
PALO ALTO NETWORKS INC 0 18,606 18,606 0.39% $2.98M
CSX CORP 0 65,784 65,784 0.35% $2.70M
EMCOR GROUP INC 0 3,421 3,421 0.33% $2.53M
REGAL REXNORD CORP 0 12,279 12,279 0.30% $2.30M
DATADOG INC CL A 0 18,177 18,177 0.28% $2.15M
DEXCOM INC 0 29,406 29,406 0.24% $1.85M
SPOTIFY TECHNOLOGY SA 0 3,758 3,758 0.24% $1.82M
FIFTH THIRD BANCORP 0 37,075 37,075 0.23% $1.72M
CROWDSTRIKE HOLDINGS INC 0 4,161 4,161 0.21% $1.62M
IQVIA HOLDINGS INC 0 8,993 8,993 0.20% $1.53M
TENET HEALTHCARE CORP 0 7,850 7,850 0.19% $1.48M
NEWMONT CORP 0 12,685 12,685 0.18% $1.37M
WATERS CORP 0 4,249 4,249 0.17% $1.27M
ROSS STORES INC 0 5,600 5,600 0.16% $1.21M
ASTRAZENECA PLC 0 5,092 5,092 0.13% $1.00M
WEST PHARMACEUTICAL SVCS INC 0 3,200 3,200 0.11% $802.05K
AXON ENTERPRISE INC 0 1,700 1,700 0.09% $721.97K
BANK OF NEW YORK MELLON CORP 0 5,400 5,400 0.08% $640.60K
ECHOSTAR CORP CL A 0 4,626 4,626 0.07% $541.57K
Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
INTUIT INC 7,467 0 -7,467 0.00% -$4.95M
CADENCE DESIGN SYSTEMS INC 10,241 0 -10,241 0.00% -$3.20M
NXP SEMICONDUCTORS NV 14,062 0 -14,062 0.00% -$3.05M
AIRBNB INC CLASS A 22,336 0 -22,336 0.00% -$3.03M
ASTRAZENECA PLC SPONS ADR 31,198 0 -31,198 0.00% -$2.87M
WILLIAMS-SONOMA INC 14,990 0 -14,990 0.00% -$2.68M
LULULEMON ATHLETICA INC 12,288 0 -12,288 0.00% -$2.55M
AMERICAN ELECTRIC POWER CO INC 21,032 0 -21,032 0.00% -$2.43M
AMPHENOL CORPORATION CL A 16,800 0 -16,800 0.00% -$2.27M
BURLINGTON STORES INC 7,704 0 -7,704 0.00% -$2.23M
TEXAS INSTRUMENTS INC 12,533 0 -12,533 0.00% -$2.17M
DELTA AIR LI 30,368 0 -30,368 0.00% -$2.11M
FLEX LTD 31,359 0 -31,359 0.00% -$1.89M
EQT CORPORATION 34,900 0 -34,900 0.00% -$1.87M
AGILENT TECHNOLOGIES INC 11,515 0 -11,515 0.00% -$1.57M
TRANE TECHNOLOGIES PLC 3,461 0 -3,461 0.00% -$1.35M
EVERSOURCE ENERGY 19,694 0 -19,694 0.00% -$1.33M
LABCORP HOLDINGS INC 4,883 0 -4,883 0.00% -$1.23M
PARKER HANNIFIN CORP 1,389 0 -1,389 0.00% -$1.22M
MCCORMICK-N/V 16,838 0 -16,838 0.00% -$1.15M
FIGMA INC-CL A 14,541 0 -14,541 0.00% -$543.40K
ESTEE LAUDER COS INC CL A 4,171 0 -4,171 0.00% -$436.79K
ALNYLAM PHARMACEUTICALS INC 684 0 -684 0.00% -$271.99K
DEERE & CO 462 0 -462 0.00% -$215.09K
Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
NVIDIA CORP 388,953 394,547 5,594 9.02% -$3.73M
BROADCOM INC 73,554 81,804 8,250 3.32% -$137.88K
META PLATFORMS INC CL A 16,079 38,995 22,916 2.92% $11.70M
EXXON MOBIL CORP 117,212 117,966 754 2.62% $5.91M
WALMART INC 63,074 111,611 48,537 1.82% $6.84M
LILLY ELI and CO 14,228 14,647 419 1.77% -$1.82M
KKR & CO INC 104,198 106,153 1,955 1.29% -$3.46M
BLACKROCK INC 2,115 9,743 7,628 1.23% $7.11M
US FOODS HOLDING CORP 71,800 81,822 10,022 0.99% $2.14M
SEMPRA ENERGY 60,531 66,116 5,585 0.84% $1.08M
MARSH & MCLENNAN 33,338 35,318 1,980 0.80% -$58.96K
SYNOPSYS INC 12,300 13,788 1,488 0.72% -$310.89K
PALANTIR TECHNOLOGIES INC 28,874 34,712 5,838 0.67% -$54.68K
NORTHROP GRUMMAN CORP 6,935 7,007 72 0.63% $826.05K
James Hardie Industries Public Limited Company 225,128 225,498 370 0.56% -$400.47K
STARBUCKS CORP 29,404 46,519 17,115 0.55% $1.69M
FERGUSON ENTERPRISES INC 13,915 16,178 2,263 0.49% $675.78K
POOL CORP 16,220 18,330 2,110 0.49% -$1.62K
WESCO INTL 7,213 12,300 5,087 0.44% $1.60M
WASTE CONNECTIONS INC 12,837 18,679 5,842 0.40% $783.12K
NRG ENERGY INC 17,754 20,631 2,877 0.40% $187.87K
SNOWFLAKE INC CL A 16,392 19,752 3,360 0.39% -$616.75K
DOORDASH INC-A 17,199 19,526 2,327 0.38% -$963.40K
ARCH CAPITAL GROUP LTD 23,084 29,752 6,668 0.37% $641.68K
ELEVANCE HEALTH INC 5,779 9,693 3,914 0.37% $811.80K
CARDINAL HEALTH INC 9,536 12,580 3,044 0.35% $698.63K
IDEX CORPORATION 13,560 13,944 384 0.35% $230.22K
SAMSARA INC-CL A 44,078 78,184 34,106 0.32% $915.09K
EDWARDS LIFESCIENCES CORP 22,291 29,647 7,356 0.31% $473.82K
DANAHER CORP 7,442 10,731 3,289 0.27% $330.97K
STRYKER CORP 3,593 5,930 2,337 0.26% $685.71K
CVS HEALTH CORP 23,031 25,761 2,730 0.24% $22.41K
STERIS PLC 6,303 7,076 773 0.21% -$33.22K
REGENERON PHARMACEUTICALS INC 1,105 1,406 301 0.14% $233.42K
BUILDERS FIRSTSOURCE 10,354 12,307 1,953 0.13% -$52.09K
BOSTON SCIENTIFIC CORP 11,321 12,642 1,321 0.10% -$286.17K
INCYTE CORP 989 2,189 1,200 0.03% $108.35K
Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
APPLE INC 197,096 172,638 -24,458 5.74% -$9.77M
MICROSOFT CORP 113,961 102,063 -11,898 4.95% -$17.33M
ALPHABET INC CL A 164,036 119,299 -44,737 4.50% -$17.04M
WELLS FARGO & CO 226,428 195,947 -30,481 2.04% -$5.50M
MASTERCARD INC CL A 38,661 28,560 -10,101 1.87% -$7.80M
GOLDMAN SACHS GROUP INC 19,110 12,843 -6,267 1.42% -$5.93M
ADV MICRO DEVICE 53,039 47,241 -5,798 1.26% -$1.75M
T-MOBILE US INC 39,555 39,385 -170 1.08% $240.78K
MERCK & CO 71,066 65,246 -5,820 1.03% $368.03K
SHELL PLC SPONS ADR 101,823 77,337 -24,486 0.94% -$289.61K
WELLTOWER INC 42,616 35,162 -7,454 0.91% -$958.08K
PACCAR INC 77,404 52,789 -24,615 0.80% -$2.38M
MARRIOTT INTL-A 21,897 17,649 -4,248 0.76% -$1.02M
DOMINION ENERGY INC 89,314 87,479 -1,835 0.71% $175.04K
LINDE PLC 11,721 10,836 -885 0.70% $374.34K
WALT DISNEY CO/T 55,393 54,091 -1,302 0.68% -$1.09M
TARGA RESOURCES CORP 24,147 19,874 -4,273 0.65% $527.89K
CLEAN HARBORS INC 25,565 16,944 -8,621 0.64% -$1.14M
HYATT HOTELS CORP CL A 32,528 27,556 -4,972 0.52% -$1.25M
MARATHON PETROLEUM CORP 18,348 15,491 -2,857 0.50% $798.66K
ARISTA NETWORKS INC 32,406 29,555 -2,851 0.48% -$617.40K
KEYCORP 193,980 176,380 -17,600 0.46% -$467.33K
PG&E CORP 218,349 198,985 -19,364 0.46% -$12.70K
INTUITIVE SURGICAL INC 7,920 7,515 -405 0.45% -$1.02M
ATMOS ENERGY CORP 19,828 17,762 -2,066 0.43% -$42.77K
BOEING CO/THE 17,051 15,877 -1,174 0.41% -$542.11K
ROYAL CARIBBEAN CRUISES LTD 11,683 11,444 -239 0.41% -$109.46K
LOWES COS INC 19,619 11,336 -8,283 0.35% -$2.05M
ABBVIE INC 15,188 11,648 -3,540 0.33% -$936.98K
AUTODESK INC 17,187 9,936 -7,251 0.31% -$2.71M
VERTIV HOLDINGS CO 15,690 9,491 -6,199 0.31% -$163.68K
NETFLIX INC 54,131 24,681 -29,450 0.31% -$2.70M
PPG INDUSTRIES INC 19,206 18,090 -1,116 0.25% -$34.39K
WW GRAINGER INC 2,279 1,559 -720 0.22% -$599.05K
O'REILLY AUTOMOTIVE INC 50,867 17,673 -33,194 0.21% -$3.01M
UNITEDHEALTH GRP 15,278 5,791 -9,487 0.21% -$3.48M
NUCOR CORP 9,619 8,742 -877 0.19% -$90.68K
PACKAGING CORP OF AMERICA 6,952 6,583 -369 0.18% -$36.67K
PERFORMANCE FOOD GROUP CO 23,376 15,201 -8,175 0.17% -$799.85K
SERVICENOW INC 15,790 11,732 -4,058 0.16% -$1.19M
THERMO FISHER SCIENTIFIC INC 7,893 2,324 -5,569 0.15% -$3.43M
JOHNSON CONTROLS INTERNATIONAL PLC 17,354 8,649 -8,705 0.15% -$945.55K
SAP SE 8,375 6,389 -1,986 0.14% -$940.51K
UNITED THERAPEUTICS CORP DEL 2,338 1,654 -684 0.13% -$158.40K
AMERICAN INTERNATIONAL GROUP 29,680 12,769 -16,911 0.13% -$1.58M
MEDTRONIC PLC 28,295 10,996 -17,299 0.12% -$1.77M
INGERSOLL RAND INC 19,819 11,819 -8,000 0.12% -$623.12K
CROWN HOLDINGS INC 9,430 8,664 -766 0.11% -$102.44K
CELANESE CORP 23,302 13,065 -10,237 0.11% -$125.92K
CENCORA INC 4,355 2,515 -1,840 0.10% -$680.84K
L3HARRIS TECHNOLOGIES INC 2,604 1,963 -641 0.09% -$86.93K
HCA HEALTHCARE INC 1,873 113 -1,760 0.01% -$820.95K
Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
AMAZON.COM INC 179,815 179,815 0 4.91% -$4.05M
BERKSHIRE HATH-B 32,888 32,888 0 2.07% -$771.22K
TESLA INC 32,334 32,334 0 1.58% -$2.52M
COCA-COLA CO/THE 79,373 79,373 0 0.79% $487.35K
CH ROBINSON WORLDWIDE INC 31,351 31,351 0 0.68% $166.47K
PHILIP MORRIS INTL INC 30,841 30,841 0 0.67% $152.35K
CHUBB LTD 12,519 12,519 0 0.53% $172.89K
JOHNSON&JOHNSON 15,045 15,045 0 0.48% $564.04K
GSK plc SPONSORED ADR 64,315 64,315 0 0.47% $395.54K
UNILEVER PLC-SPONSORED ADR DEPOSITARY RECEIPT 57,682 57,682 0 0.43% -$486.26K
HALEON PLC SPONS ADR 281,711 281,711 0 0.37% -$28.17K
ORACLE CORP 16,189 16,189 0 0.31% -$773.83K
SPONSORED ADR 36,870 36,870 0 0.28% $68.21K
VERTEX PHARMACEUTICALS INC 4,634 4,634 0 0.27% -$31.60K
PROCTER & GAMBLE 13,733 13,733 0 0.26% $15.52K
EVEREST REINSURANCE GROUP LTD 5,930 5,930 0 0.25% -$74.12K
MONSTER BEVERAGE CORP 25,649 25,649 0 0.24% -$107.98K
GILEAD SCIENCES INC 12,741 12,741 0 0.23% $211.88K
AMGEN INC 4,969 4,969 0 0.23% $121.94K
PEPSICO INC 9,848 9,848 0 0.20% $115.91K
ABBOTT LABS 14,138 14,138 0 0.19% -$319.80K
RTX CORP 5,871 5,871 0 0.15% $55.77K
CASEY'S GENERAL 1,495 1,495 0 0.14% $261.85K
BIO-TECHNE CORP 17,063 17,063 0 0.12% -$111.76K
ELANCO ANIMAL HEALTH INC 31,280 31,280 0 0.10% $40.66K
ARGENX SE SPONSORED ADR 940 940 0 0.09% -$104.06K
MAGNUM ICE CREAM 12,978 12,978 0 0.03% -$11.68K

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