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 |
|---|---|---|---|---|
| 1 | Eastman Chemical Co | 38,963 | 3M $ | 0.57 % |
| 2 | Element Solutions Inc | 77,718 | 2.7M $ | 0.50 % |
| 3 | Primoris Services Corp | 18,458 | 2.6M $ | 0.50 % |
| 4 | Viavi Solutions Inc | 79,167 | 2.6M $ | 0.50 % |
| 5 | Argan Inc | 4,746 | 2.6M $ | 0.49 % |
| 6 | FormFactor Inc | 26,521 | 2.6M $ | 0.49 % |
| 7 | LKQ Corp | 87,391 | 2.6M $ | 0.49 % |
| 8 | Jackson Financial Inc | 24,168 | 2.6M $ | 0.49 % |
| 9 | ESCO Technologies Inc | 8,848 | 2.5M $ | 0.47 % |
| 10 | Match Group Inc | 80,585 | 2.5M $ | 0.47 % |
| 11 | Celanese Corp | 37,466 | 2.5M $ | 0.47 % |
| 12 | Semtech Corp | 31,661 | 2.4M $ | 0.46 % |
| 13 | Armstrong World Industries Inc | 14,756 | 2.4M $ | 0.46 % |
| 14 | Sanmina Corp | 18,683 | 2.4M $ | 0.46 % |
| 15 | SM Energy Co | 77,310 | 2.4M $ | 0.46 % |
| 16 | Molina Healthcare Inc | 17,619 | 2.3M $ | 0.45 % |
| 17 | Air Lease Corp | 36,034 | 2.3M $ | 0.44 % |
| 18 | DigitalOcean Holdings Inc | 27,157 | 2.3M $ | 0.44 % |
| 19 | Krystal Biotech Inc | 8,815 | 2.3M $ | 0.43 % |
| 20 | JBT Marel Corp | 17,780 | 2.3M $ | 0.43 % |
| 21 | Zurn Elkay Water Solutions Corp | 50,691 | 2.3M $ | 0.43 % |
| 22 | Federal Signal Corp | 20,767 | 2.2M $ | 0.43 % |
| 23 | Lumen Technologies Inc | 322,829 | 2.2M $ | 0.43 % |
| 24 | Qorvo Inc | 28,820 | 2.2M $ | 0.42 % |
| 25 | Terreno Realty Corp | 35,642 | 2.2M $ | 0.42 % |
| 26 | Essential Properties Realty Trust Inc | 71,800 | 2.2M $ | 0.41 % |
| 27 | Viasat Inc | 46,473 | 2.1M $ | 0.40 % |
| 28 | Brinker International Inc | 14,900 | 2.1M $ | 0.40 % |
| 29 | Protagonist Therapeutics Inc | 20,105 | 2.1M $ | 0.40 % |
| 30 | Sealed Air Corp | 50,386 | 2.1M $ | 0.40 % |
| 31 | Glaukos Corp | 19,651 | 2.1M $ | 0.40 % |
| 32 | Noble Corp PLC | 43,029 | 2.1M $ | 0.40 % |
| 33 | MarketAxess Holdings Inc | 12,718 | 2.1M $ | 0.40 % |
| 34 | Archrock Inc | 60,003 | 2.1M $ | 0.40 % |
| 35 | Everus Construction Group Inc | 17,450 | 2.1M $ | 0.39 % |
| 36 | Installed Building Products Inc | 7,749 | 2.1M $ | 0.39 % |
| 37 | Lincoln National Corp | 57,837 | 2.1M $ | 0.39 % |
| 38 | Paycom Software Inc | 16,715 | 2M $ | 0.39 % |
| 39 | CarMax Inc | 48,513 | 2M $ | 0.38 % |
| 40 | Lamb Weston Holdings Inc | 47,515 | 2M $ | 0.38 % |
| 41 | Alkermes PLC | 56,497 | 2M $ | 0.38 % |
| 42 | Ryman Hospitality Properties Inc | 21,557 | 2M $ | 0.38 % |
| 43 | Madison Square Garden Sports Corp | 6,150 | 2M $ | 0.38 % |
| 44 | Gates Industrial Corp PLC | 86,855 | 2M $ | 0.37 % |
| 45 | Magnolia Oil & Gas Corp | 61,688 | 1.9M $ | 0.37 % |
| 46 | StoneX Group Inc | 23,964 | 1.9M $ | 0.37 % |
| 47 | BrightSpring Health Services Inc | 45,190 | 1.9M $ | 0.37 % |
| 48 | Balchem Corp | 11,060 | 1.9M $ | 0.36 % |
| 49 | PTC Therapeutics Inc | 27,469 | 1.9M $ | 0.36 % |
| 50 | California Resources Corp | 26,814 | 1.9M $ | 0.35 % |
| 51 | Plexus Corp | 9,149 | 1.9M $ | 0.35 % |
| 52 | Caesars Entertainment Inc | 69,829 | 1.8M $ | 0.35 % |
| 53 | Versant Media Group Inc | 49,736 | 1.8M $ | 0.35 % |
| 54 | Core Natural Resources Inc | 17,530 | 1.8M $ | 0.35 % |
| 55 | VSE Corp | 9,852 | 1.8M $ | 0.35 % |
| 56 | Lyft Inc | 136,205 | 1.8M $ | 0.34 % |
| 57 | Teleflex Inc | 15,121 | 1.8M $ | 0.34 % |
| 58 | Rithm Capital Corp | 190,205 | 1.8M $ | 0.34 % |
| 59 | Enpro Inc | 7,186 | 1.8M $ | 0.34 % |
| 60 | Granite Construction Inc | 14,837 | 1.8M $ | 0.34 % |
| 61 | Arcosa Inc | 16,727 | 1.8M $ | 0.34 % |
| 62 | Piper Sandler Cos | 23,052 | 1.8M $ | 0.34 % |
| 63 | Powell Industries Inc | 3,240 | 1.8M $ | 0.33 % |
| 64 | Mohawk Industries Inc | 17,771 | 1.7M $ | 0.33 % |
| 65 | Matson Inc | 10,668 | 1.7M $ | 0.33 % |
| 66 | Atlantic Union Bankshares Corp | 48,497 | 1.7M $ | 0.33 % |
| 67 | Ameris Bancorp | 21,891 | 1.7M $ | 0.32 % |
| 68 | Casella Waste Systems Inc | 21,384 | 1.7M $ | 0.32 % |
| 69 | Enphase Energy Inc | 44,772 | 1.7M $ | 0.32 % |
| 70 | Etsy Inc | 33,770 | 1.7M $ | 0.32 % |
| 71 | Warrior Met Coal Inc | 17,986 | 1.7M $ | 0.32 % |
| 72 | Kodiak Gas Services Inc | 28,438 | 1.7M $ | 0.32 % |
| 73 | Macerich Co/The | 87,402 | 1.7M $ | 0.31 % |
| 74 | Axos Financial Inc | 19,320 | 1.6M $ | 0.31 % |
| 75 | Phillips Edison & Co Inc | 42,972 | 1.6M $ | 0.31 % |
| 76 | Ralliant Corp | 38,596 | 1.6M $ | 0.31 % |
| 77 | HA Sustainable Infrastructure Capital Inc | 43,614 | 1.6M $ | 0.30 % |
| 78 | Laureate Education Inc | 45,875 | 1.6M $ | 0.30 % |
| 79 | Liberty Energy Inc | 55,444 | 1.6M $ | 0.30 % |
| 80 | Resideo Technologies Inc | 47,127 | 1.6M $ | 0.30 % |
| 81 | Mirion Technologies Inc | 83,713 | 1.6M $ | 0.30 % |
| 82 | TG Therapeutics Inc | 46,516 | 1.5M $ | 0.29 % |
| 83 | Badger Meter Inc | 10,083 | 1.5M $ | 0.29 % |
| 84 | Radian Group Inc | 46,356 | 1.5M $ | 0.29 % |
| 85 | Boot Barn Holdings Inc | 10,385 | 1.5M $ | 0.29 % |
| 86 | MYR Group Inc | 5,296 | 1.5M $ | 0.28 % |
| 87 | Millrose Properties Inc | 52,748 | 1.5M $ | 0.28 % |
| 88 | Mueller Water Products Inc | 53,503 | 1.5M $ | 0.28 % |
| 89 | Clear Secure Inc | 30,333 | 1.5M $ | 0.28 % |
| 90 | CSW Industrials Inc | 5,635 | 1.5M $ | 0.28 % |
| 91 | AAR Corp | 13,312 | 1.5M $ | 0.28 % |
| 92 | MDU Resources Group Inc | 69,930 | 1.4M $ | 0.28 % |
| 93 | Moelis & Co | 25,320 | 1.4M $ | 0.27 % |
| 94 | ACI Worldwide Inc | 35,123 | 1.4M $ | 0.27 % |
| 95 | Telephone and Data Systems Inc | 33,622 | 1.4M $ | 0.27 % |
| 96 | Meritage Homes Corp | 22,859 | 1.4M $ | 0.27 % |
| 97 | Apellis Pharmaceuticals Inc | 35,064 | 1.4M $ | 0.27 % |
| 98 | Champion Homes Inc | 18,920 | 1.4M $ | 0.27 % |
| 99 | OSI Systems Inc | 5,298 | 1.4M $ | 0.27 % |
| 100 | Itron Inc | 15,672 | 1.4M $ | 0.27 % |