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Large Cap Core Stock Portfolio
NORTHWESTERN MUTUAL SERIES FUND INC

Allocation breakdown

As of March 31, 2026 · N-PORT

By asset class

By country

By sector

By industry (SIC code)

As of March 31, 2026 · N-PORT

How we map holdings to the sectors above: each holding's issuer carries a U.S. SIC industry code in its EDGAR filer record, and each SIC code rolls up to a sector. Expand a sector to see its industries, and click a SIC code to list this fund's positions in that industry. Bonds and foreign or private issuers with no SEC filer record fall into Unclassified.

Semiconductors & Related Devices 15.14%
Services-Prepackaged Software 8.15%
Services-Computer Programming, Data Processing, Etc. 7.42%
Electronic Computers 5.74%
Optical Instruments & Lenses 0.85%
Computer Communications Equipment 0.48%
Computer Peripheral Equipment, NEC 0.39%
Services-Computer Integrated Systems Design 0.32%
Electronic Components, NEC 0.31%
Laboratory Analytical Instruments 0.17%
Measuring & Controlling Devices, NEC 0.15%
Retail-Catalog & Mail-Order Houses 4.91%
Motor Vehicles & Passenger Car Bodies 2.37%
Services-Business Services, NEC 2.25%
Retail-Variety Stores 1.82%
Hotels & Motels 1.28%
Search, Detection, Navigation, Guidance, Aeronautical Sys 0.72%
Services-Miscellaneous Amusement & Recreation 0.68%
Retail-Eating & Drinking Places 0.55%
Retail-Lumber & Other Building Materials Dealers 0.48%
Industrial Instruments For Measurement, Display, and Control 0.27%
Retail-Drug Stores and Proprietary Stores 0.24%
Retail-Family Clothing Stores 0.16%
Fire, Marine & Casualty Insurance 3.10%
Security Brokers, Dealers & Flotation Companies 2.65%
National Commercial Banks 2.51%
Investment Advice 1.29%
Insurance Agents, Brokers & Service 0.80%
Hospital & Medical Service Plans 0.58%
State Commercial Banks 0.31%
Pharmaceutical Preparations 4.57%
Orthopedic, Prosthetic & Surgical Appliances & Supplies 0.77%
Surgical & Medical Instruments & Apparatus 0.71%
Biological Products, (No Diagnostic Substances) 0.67%
Services-General Medical & Surgical Hospitals, NEC 0.20%
Electromedical & Electrotherapeutic Apparatus 0.12%
Wholesale-Groceries & Related Products 0.99%
Misc Industrial & Commercial Machinery & Equipment 0.57%
Wholesale-Hardware & Plumbing & Heating Equipment & Supplies 0.49%
Wholesale-Misc Durable Goods 0.49%
Wholesale-Drugs, Proprietaries & Druggists' Sundries 0.45%
Wholesale-Electrical Apparatus & Equipment, Wiring Supplies 0.44%
Aircraft 0.41%
Water Transportation 0.41%
Pumps & Pumping Equipment 0.35%
Railroads, Line-Haul Operating 0.35%
Electrical Work 0.33%
General Industrial Machinery & Equipment, NEC 0.30%
Services-Commercial Physical & Biological Research 0.23%
Wholesale-Groceries, General Line 0.17%
Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip 0.15%
Aircraft Engines & Engine Parts 0.15%
General Industrial Machinery & Equipment 0.12%
Metal Cans 0.11%
Ordnance & Accessories, (No Vehicles/Guided Missiles) 0.09%
Electric Services 1.10%
Electric & Other Services Combined 0.90%
Natural Gas Transmission 0.65%
Hazardous Waste Management 0.64%
Natural Gas Distribution 0.43%
Refuse Systems 0.40%
Petroleum Refining 3.12%
Crude Petroleum & Natural Gas 0.94%
Industrial Inorganic Chemicals 0.70%
Soap, Detergents, Cleang Preparations, Perfumes, Cosmetics 0.69%
Concrete Products, Except Block & Brick 0.56%
Perfumes, Cosmetics & Other Toilet Preparations 0.37%
Paints, Varnishes, Lacquers, Enamels & Allied Prods 0.25%
Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens) 0.19%
Gold and Silver Ores 0.18%
Paperboard Containers & Boxes 0.18%
Plastic Material, Synth Resin/Rubber, Cellulos (No Glass) 0.11%
Beverages 0.99%
Cigarettes 0.95%
Bottled & Canned Soft Drinks & Carbonated Waters 0.24%
Ice Cream & Frozen Desserts 0.03%
Radiotelephone Communications 1.08%
Services-Video Tape Rental 0.31%
Radio Broadcasting Stations 0.24%
Communications Services, NEC 0.07%
— Unclassified 4.92%

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