Holdings of Index 600 Stock Portfolio
NORTHWESTERN MUTUAL SERIES FUND INC ·603 declared positions · as of Mar 31, 2026
Original filing · Net assets 525.9M $ · Ten largest lines: 5 % of the equity sleeve
Sector breakdown
- Unattributed 100.0 %
Titelia classification, company by company. The unattributed share stays visible.
Currency breakdown
- USD 100.0 %
The quoted currency of each line, as declared.
Country breakdown
- US 96.9 %
- GB 0.8 %
- BM 0.6 %
- IE 0.6 %
- PR 0.5 %
- MH 0.3 %
- KY 0.2 %
- BS 0.2 %
Shares computed on the equity sleeve.
| Rank | Country | Lines | Value | Share |
|---|---|---|---|---|
| 1 | US | 586 | 506M $ | 96.92 % |
| 2 | GB | 2 | 4.1M $ | 0.78 % |
| 3 | BM | 4 | 3.3M $ | 0.64 % |
| 4 | IE | 3 | 3M $ | 0.58 % |
| 5 | PR | 3 | 2.4M $ | 0.45 % |
| 6 | MH | 2 | 1.4M $ | 0.28 % |
| 7 | KY | 2 | 1M $ | 0.19 % |
| 8 | BS | 1 | 800.2K $ | 0.15 % |
Positions
| Rank | Company | Shares | Value | Weight |
|---|---|---|---|---|
| 501 | Easterly Government Properties Inc | 14,983 | 321.1K $ | 0.06 % |
| 502 | Employers Holdings Inc | 7,784 | 320.2K $ | 0.06 % |
| 503 | STAAR Surgical Co | 17,018 | 318.2K $ | 0.06 % |
| 504 | Upbound Group Inc | 17,630 | 318.2K $ | 0.06 % |
| 505 | Pacira BioSciences Inc | 14,064 | 317.8K $ | 0.06 % |
| 506 | Unitil Corp | 6,054 | 316.3K $ | 0.06 % |
| 507 | Cogent Communications Holdings Inc | 16,237 | 305.9K $ | 0.06 % |
| 508 | Scholastic Corp | 7,770 | 303.5K $ | 0.06 % |
| 509 | Vestis Corp | 38,583 | 303.3K $ | 0.06 % |
| 510 | Sun Country Airlines Holdings Inc | 18,353 | 303.2K $ | 0.06 % |
| 511 | United Parks & Resorts Inc | 9,268 | 302.7K $ | 0.06 % |
| 512 | NCR Voyix Corp | 47,415 | 300.1K $ | 0.06 % |
| 513 | American Assets Trust Inc | 16,202 | 298.3K $ | 0.06 % |
| 514 | Tootsie Roll Industries Inc | 6,965 | 297.5K $ | 0.06 % |
| 515 | Southside Bancshares Inc | 9,565 | 297.4K $ | 0.06 % |
| 516 | Winnebago Industries Inc | 9,594 | 297.3K $ | 0.06 % |
| 517 | Fortrea Holdings Inc | 31,471 | 296.5K $ | 0.06 % |
| 518 | Xencor Inc | 24,549 | 296.1K $ | 0.06 % |
| 519 | JBG SMITH Properties | 20,159 | 294.5K $ | 0.06 % |
| 520 | Azenta Inc | 13,935 | 294.4K $ | 0.06 % |
| 521 | Trupanion Inc | 11,492 | 294.3K $ | 0.06 % |
| 522 | Capitol Federal Financial Inc | 40,901 | 291.6K $ | 0.06 % |
| 523 | Virtus Investment Partners Inc | 2,162 | 290.5K $ | 0.06 % |
| 524 | Central Pacific Financial Corp | 9,034 | 288.7K $ | 0.05 % |
| 525 | Penguin Solutions Inc | 16,370 | 288.1K $ | 0.05 % |
| 526 | Gentherm Inc | 10,311 | 286.4K $ | 0.05 % |
| 527 | Quanex Building Products Corp | 15,740 | 282.8K $ | 0.05 % |
| 528 | United Fire Group Inc | 7,508 | 278.2K $ | 0.05 % |
| 529 | Matthews International Corp | 10,596 | 273.6K $ | 0.05 % |
| 530 | LGI Homes Inc | 6,850 | 270.8K $ | 0.05 % |
| 531 | Pursuit Attractions and Hospitality Inc | 7,387 | 270.6K $ | 0.05 % |
| 532 | TrustCo Bank Corp NY | 6,171 | 270.2K $ | 0.05 % |
| 533 | Core Laboratories Inc | 16,066 | 269.7K $ | 0.05 % |
| 534 | Hanmi Financial Corp | 10,084 | 265.8K $ | 0.05 % |
| 535 | National Beverage Corp | 7,858 | 264.4K $ | 0.05 % |
| 536 | Koppers Holdings Inc | 6,786 | 262.5K $ | 0.05 % |
| 537 | Marten Transport Ltd | 19,422 | 255K $ | 0.05 % |
| 538 | BioLife Solutions Inc | 13,318 | 254.1K $ | 0.05 % |
| 539 | BJ's Restaurants Inc | 7,184 | 252.2K $ | 0.05 % |
| 540 | Sprinklr Inc | 41,791 | 250.7K $ | 0.05 % |
| 541 | Standard Motor Products Inc | 7,193 | 249.9K $ | 0.05 % |
| 542 | Whitestone REIT | 15,456 | 249.6K $ | 0.05 % |
| 543 | National Presto Industries Inc | 1,820 | 249.4K $ | 0.05 % |
| 544 | Apogee Enterprises Inc | 7,412 | 248.6K $ | 0.05 % |
| 545 | ScanSource Inc | 6,766 | 245.6K $ | 0.05 % |
| 546 | Liquidity Services Inc | 8,021 | 245.2K $ | 0.05 % |
| 547 | John B Sanfilippo & Son Inc | 3,088 | 245K $ | 0.05 % |
| 548 | AMN Healthcare Services Inc | 13,191 | 241.9K $ | 0.05 % |
| 549 | Shenandoah Telecommunications Co | 15,683 | 241.8K $ | 0.05 % |
| 550 | Grocery Outlet Holding Corp | 34,064 | 240.2K $ | 0.05 % |
| 551 | Redwood Trust Inc | 42,560 | 238.8K $ | 0.05 % |
| 552 | Under Armour Inc | 41,100 | 238K $ | 0.05 % |
| 553 | Fox Factory Holding Corp | 14,393 | 236.9K $ | 0.05 % |
| 554 | Eagle Bancorp Inc | 9,511 | 236.5K $ | 0.05 % |
| 555 | Amphastar Pharmaceuticals Inc | 12,055 | 236.2K $ | 0.04 % |
| 556 | Franklin BSP Realty Trust Inc | 27,790 | 235.9K $ | 0.04 % |
| 557 | PRA Group Inc | 13,449 | 235.4K $ | 0.04 % |
| 558 | Certara Inc | 41,175 | 234.7K $ | 0.04 % |
| 559 | Mister Car Wash Inc | 33,320 | 232.2K $ | 0.04 % |
| 560 | QuinStreet Inc | 19,287 | 231.6K $ | 0.04 % |
| 561 | PC Connection Inc | 3,847 | 224.9K $ | 0.04 % |
| 562 | Insteel Industries Inc | 6,682 | 224.6K $ | 0.04 % |
| 563 | Avanos Medical Inc | 15,978 | 223.9K $ | 0.04 % |
| 564 | Legalzoom.com Inc | 39,119 | 221.8K $ | 0.04 % |
| 565 | Integra LifeSciences Holdings Corp | 23,064 | 217.3K $ | 0.04 % |
| 566 | Cracker Barrel Old Country Store Inc | 7,665 | 215.5K $ | 0.04 % |
| 567 | AMERISAFE Inc | 6,461 | 215.3K $ | 0.04 % |
| 568 | Schrodinger Inc/United States | 18,924 | 215K $ | 0.04 % |
| 569 | RPC Inc | 30,343 | 214.8K $ | 0.04 % |
| 570 | Marcus & Millichap Inc | 8,062 | 214.4K $ | 0.04 % |
| 571 | Adamas Trust Inc | 28,907 | 212.8K $ | 0.04 % |
| 572 | Safehold Inc | 15,525 | 210.1K $ | 0.04 % |
| 573 | American Woodmark Corp | 5,013 | 199.7K $ | 0.04 % |
| 574 | Metallus Inc | 12,133 | 198.3K $ | 0.04 % |
| 575 | Sabre Corp | 136,309 | 197.6K $ | 0.04 % |
| 576 | Hertz Global Holdings Inc | 42,786 | 197.2K $ | 0.04 % |
| 577 | NexPoint Residential Trust Inc | 7,505 | 187.6K $ | 0.04 % |
| 578 | Alpha & Omega Semiconductor Ltd | 8,451 | 187.3K $ | 0.04 % |
| 579 | Oxford Industries Inc | 4,835 | 186.2K $ | 0.04 % |
| 580 | eXp World Holdings Inc | 30,682 | 183.8K $ | 0.03 % |
| 581 | Navient Corp | 22,359 | 182.9K $ | 0.03 % |
| 582 | Vital Farms Inc | 12,858 | 181.6K $ | 0.03 % |
| 583 | Golden Entertainment Inc | 6,757 | 180.3K $ | 0.03 % |
| 584 | Universal Health Realty Income Trust | 4,391 | 177.7K $ | 0.03 % |
| 585 | Embecta Corp | 20,063 | 177.4K $ | 0.03 % |
| 586 | Ethan Allen Interiors Inc | 7,937 | 176.7K $ | 0.03 % |
| 587 | MarineMax Inc | 6,502 | 175.9K $ | 0.03 % |
| 588 | HealthStream Inc | 8,161 | 169K $ | 0.03 % |
| 589 | Monro Inc | 10,320 | 165.5K $ | 0.03 % |
| 590 | Cytek Biosciences Inc | 37,670 | 164.6K $ | 0.03 % |
| 591 | Heartland Express Inc | 15,720 | 163.5K $ | 0.03 % |
| 592 | Cable One Inc | 1,589 | 144.9K $ | 0.03 % |
| 593 | Saul Centers Inc | 4,291 | 139.8K $ | 0.03 % |
| 594 | Dream Finders Homes Inc | 9,922 | 138.1K $ | 0.03 % |
| 595 | Shutterstock Inc | 8,304 | 137.9K $ | 0.03 % |
| 596 | World Acceptance Corp | 996 | 134.5K $ | 0.03 % |
| 597 | Grid Dynamics Holdings Inc | 22,738 | 129.6K $ | 0.02 % |
| 598 | Forward Air Corp | 7,737 | 129.3K $ | 0.02 % |
| 599 | N-able Inc/US | 25,157 | 117.5K $ | 0.02 % |
| 600 | Titan International Inc | 16,474 | 113.8K $ | 0.02 % |