Holdings of Mid Cap Growth Stock Portfolio
NORTHWESTERN MUTUAL SERIES FUND INC · 109 declared positions · as of Mar 31, 2026
Original filing · Net assets 959.5M $ · Ten largest lines: 28 % of the equity sleeve
Sector breakdown
- Industrials 14.0 %
- Consumer discretionary 10.4 %
- Technology 8.3 %
- Health care 5.8 %
- Energy 2.3 %
- Utilities 1.4 %
- Financials 1.1 %
- Unattributed 56.9 %
Sector is not declared in Form N-PORT: this is a Titelia classification, decided company by company. The unattributed share is counted as such rather than spread over the others.
Currency breakdown
- USD 100.0 %
The currency each line is denominated in, as declared. It does not follow the country: a French company listed in the United States is declared in dollars.
Country breakdown
- US 96.8 %
- KY 0.9 %
- GB 0.7 %
- IE 0.7 %
- CH 0.6 %
- CA 0.2 %
- NL 0.1 %
- IL 0.1 %
Shares computed on the equity sleeve, the only part this site carries.
| Country | Lines | Value (USD) | Share |
|---|---|---|---|
| US | 102 | 924.8M $ | 96.78 % |
| KY | 1 | 8.5M $ | 0.89 % |
| GB | 1 | 6.4M $ | 0.67 % |
| IE | 1 | 6.3M $ | 0.65 % |
| CH | 1 | 6.1M $ | 0.64 % |
| CA | 1 | 2.1M $ | 0.22 % |
| NL | 1 | 782.9K $ | 0.08 % |
| IL | 1 | 702.6K $ | 0.07 % |
Positions
| Company | Shares | Value (USD) | Weight |
|---|---|---|---|
| Howmet Aerospace Inc | 144,513 | 33.3M $ | 3.47 % |
| Hilton Worldwide Holdings Inc | 108,303 | 32.9M $ | 3.43 % |
| Vertiv Holdings Co | 129,057 | 32.3M $ | 3.37 % |
| Royal Caribbean Cruises Ltd | 108,652 | 29.9M $ | 3.12 % |
| Quanta Services Inc | 50,762 | 27.9M $ | 2.90 % |
| Comfort Systems USA Inc | 17,839 | 24.6M $ | 2.56 % |
| Cencora Inc | 76,295 | 24M $ | 2.50 % |
| Insmed Inc | 131,668 | 21.5M $ | 2.24 % |
| Cloudflare Inc | 103,668 | 21.4M $ | 2.23 % |
| Alnylam Pharmaceuticals Inc | 59,550 | 19.7M $ | 2.05 % |
| Cheniere Energy Inc | 59,489 | 16.9M $ | 1.76 % |
| Carvana Co | 53,419 | 16.8M $ | 1.75 % |
| Burlington Stores Inc | 46,796 | 15.2M $ | 1.59 % |
| Natera Inc | 71,780 | 14.4M $ | 1.50 % |
| Neurocrine Biosciences Inc | 101,844 | 13.4M $ | 1.40 % |
| MSCI Inc | 24,723 | 13.3M $ | 1.39 % |
| Live Nation Entertainment Inc | 87,341 | 13.3M $ | 1.39 % |
| Datadog Inc | 112,473 | 13.3M $ | 1.38 % |
| Vistra Corp | 87,048 | 13.1M $ | 1.36 % |
| Williams Cos Inc/The | 175,285 | 12.8M $ | 1.33 % |
| HEICO Corp | 57,914 | 12.2M $ | 1.27 % |
| Take-Two Interactive Software Inc | 60,185 | 11.9M $ | 1.24 % |
| FTAI Aviation Ltd | 48,374 | 11.9M $ | 1.24 % |
| Veeva Systems Inc | 66,437 | 11.7M $ | 1.22 % |
| IDEXX Laboratories Inc | 20,224 | 11.4M $ | 1.18 % |
| Monolithic Power Systems Inc | 10,322 | 11.3M $ | 1.18 % |
| CBRE Group Inc | 79,312 | 10.7M $ | 1.12 % |
| ITT Inc | 56,304 | 10.7M $ | 1.12 % |
| Somnigroup International Inc | 144,189 | 10.7M $ | 1.11 % |
| Casey's General Stores Inc | 14,217 | 10.3M $ | 1.08 % |
| Ulta Beauty Inc | 19,388 | 10.1M $ | 1.06 % |
| ROBLOX Corp | 178,107 | 10.1M $ | 1.05 % |
| Ciena Corp | 25,307 | 9.8M $ | 1.02 % |
| Performance Food Group Co | 111,357 | 9.5M $ | 0.99 % |
| Dexcom Inc | 151,491 | 9.5M $ | 0.99 % |
| ON Semiconductor Corp | 151,126 | 9.4M $ | 0.98 % |
| Teledyne Technologies Inc | 15,112 | 9.1M $ | 0.95 % |
| AMETEK Inc | 42,629 | 9.1M $ | 0.95 % |
| BWX Technologies Inc | 44,631 | 9.1M $ | 0.95 % |
| Raymond James Financial Inc | 62,642 | 9.1M $ | 0.95 % |
| EOG Resources Inc | 61,735 | 8.9M $ | 0.93 % |
| AutoZone Inc | 2,629 | 8.9M $ | 0.93 % |
| Teradyne Inc | 29,207 | 8.7M $ | 0.90 % |
| Fabrinet | 16,271 | 8.5M $ | 0.88 % |
| Reddit Inc | 61,172 | 8.2M $ | 0.86 % |
| Axon Enterprise Inc | 19,072 | 8.1M $ | 0.84 % |
| Rollins Inc | 148,656 | 7.9M $ | 0.83 % |
| Broadridge Financial Solutions Inc | 47,754 | 7.8M $ | 0.81 % |
| HubSpot Inc | 29,895 | 7.3M $ | 0.76 % |
| Twilio Inc | 56,191 | 7.1M $ | 0.74 % |
| TechnipFMC PLC | 92,319 | 6.4M $ | 0.67 % |
| MKS Inc | 27,724 | 6.4M $ | 0.66 % |
| Robinhood Markets Inc | 90,653 | 6.3M $ | 0.65 % |
| Alkermes PLC | 176,952 | 6.3M $ | 0.65 % |
| MongoDB Inc | 25,248 | 6.2M $ | 0.64 % |
| On Holding AG | 178,490 | 6.1M $ | 0.63 % |
| Rocket Lab Corp | 93,779 | 6M $ | 0.63 % |
| DoorDash Inc | 39,539 | 5.9M $ | 0.62 % |
| Rocket Cos Inc | 407,712 | 5.8M $ | 0.61 % |
| Bank of New York Mellon Corp/The | 48,455 | 5.7M $ | 0.60 % |
| IQVIA Holdings Inc | 32,768 | 5.6M $ | 0.58 % |
| Veralto Corp | 62,319 | 5.5M $ | 0.57 % |
| Palo Alto Networks Inc | 34,356 | 5.5M $ | 0.57 % |
| Snowflake Inc | 36,288 | 5.5M $ | 0.57 % |
| Texas Roadhouse Inc | 32,765 | 5.4M $ | 0.56 % |
| Procore Technologies Inc | 94,531 | 5.4M $ | 0.56 % |
| Levi Strauss & Co | 287,329 | 5.3M $ | 0.55 % |
| LPL Financial Holdings Inc | 17,658 | 5.3M $ | 0.55 % |
| Nuvalent Inc | 51,604 | 5.3M $ | 0.55 % |
| Ingersoll Rand Inc | 65,970 | 5.3M $ | 0.55 % |
| JFrog Ltd | 111,507 | 5.2M $ | 0.55 % |
| Trane Technologies PLC | 12,520 | 5.2M $ | 0.54 % |
| Wynn Resorts Ltd | 51,026 | 5.2M $ | 0.54 % |
| Ionis Pharmaceuticals Inc | 68,528 | 5.1M $ | 0.54 % |
| Carlisle Cos Inc | 15,388 | 5.1M $ | 0.54 % |
| Garmin Ltd | 22,045 | 5.1M $ | 0.53 % |
| Esab Corp | 52,577 | 5.1M $ | 0.53 % |
| Agilent Technologies Inc | 43,047 | 4.9M $ | 0.51 % |
| PACCAR Inc | 41,863 | 4.8M $ | 0.50 % |
| Chipotle Mexican Grill Inc | 149,393 | 4.8M $ | 0.50 % |
| Okta Inc | 60,531 | 4.8M $ | 0.50 % |
| Thor Industries Inc | 57,838 | 4.6M $ | 0.48 % |
| Equity LifeStyle Properties Inc | 73,115 | 4.6M $ | 0.48 % |
| Tradeweb Markets Inc | 38,716 | 4.6M $ | 0.47 % |
| Arthur J Gallagher & Co | 20,910 | 4.5M $ | 0.47 % |
| Rambus Inc | 51,615 | 4.4M $ | 0.46 % |
| James Hardie Industries PLC | 232,728 | 4.4M $ | 0.46 % |
| Rhythm Pharmaceuticals Inc | 50,223 | 4.4M $ | 0.46 % |
| Mettler-Toledo International Inc | 3,295 | 4.2M $ | 0.43 % |
| Planet Fitness Inc | 51,555 | 3.8M $ | 0.40 % |
| Coupang Inc | 200,206 | 3.8M $ | 0.39 % |
| Penumbra Inc | 11,294 | 3.7M $ | 0.39 % |
| Bright Horizons Family Solutions Inc | 42,990 | 3.5M $ | 0.37 % |
| Expedia Group Inc | 14,417 | 3.3M $ | 0.35 % |
| Rubrik Inc | 63,653 | 3.1M $ | 0.32 % |
| Interactive Brokers Group Inc | 46,008 | 3.1M $ | 0.32 % |
| Figure Technology Solutions Inc | 85,415 | 2.9M $ | 0.30 % |
| DigitalOcean Holdings Inc | 31,379 | 2.7M $ | 0.28 % |
| Caris Life Sciences Inc | 142,881 | 2.6M $ | 0.27 % |
| Flutter Entertainment PLC | 23,561 | 2.4M $ | 0.25 % |
| IRhythm Holdings Inc | 19,037 | 2.2M $ | 0.23 % |
| Wingstop Inc | 14,347 | 2.2M $ | 0.23 % |
| Disc Medicine Inc | 32,767 | 2.1M $ | 0.22 % |
| Xenon Pharmaceuticals Inc | 35,906 | 2.1M $ | 0.22 % |
| Bridgebio Pharma Inc | 27,810 | 2.1M $ | 0.22 % |
| Ares Management Corp | 16,354 | 1.8M $ | 0.19 % |
| Affirm Holdings Inc | 31,945 | 1.5M $ | 0.15 % |
| uniQure NV | 47,883 | 782.9K $ | 0.08 % |
| CONTRA CYBERARK SOFTWA | 15,613 | 702.6K $ | 0.07 % |