WBSIX
William Blair Small Cap Growth Fund
WILLIAM BLAIR FUNDS

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.

Services-Prepackaged Software 5.16%
Semiconductors & Related Devices 4.54%
Calculating & Accounting Machines (No Electronic Computers) 2.46%
Miscellaneous Electrical Machinery, Equipment & Supplies 1.82%
Electrical Industrial Apparatus 1.54%
Services-Computer Integrated Systems Design 0.99%
Electronic Components & Accessories 0.83%
Electronic Components, NEC 0.78%
Measuring & Controlling Devices, NEC 0.76%
Services-Computer Programming Services 0.69%
Communications Equipment, NEC 0.65%
Laboratory Analytical Instruments 0.26%
Biological Products, (No Diagnostic Substances) 6.03%
Surgical & Medical Instruments & Apparatus 4.96%
Pharmaceutical Preparations 3.29%
Orthopedic, Prosthetic & Surgical Appliances & Supplies 1.36%
Services-Medical Laboratories 1.11%
Ophthalmic Goods 1.06%
Services-Health Services 0.40%
General Industrial Machinery & Equipment, NEC 2.61%
Pumps & Pumping Equipment 1.56%
Services-Educational Services 1.54%
Oil & Gas Field Machinery & Equipment 1.34%
Engines & Turbines 1.28%
Heavy Construction Other Than Bldg Const - Contractors 1.23%
Miscellaneous Transportation Equipment 1.19%
Industrial Trucks, Tractors, Trailors & Stackers 0.97%
Miscellaneous Fabricated Metal Products 0.95%
Wholesale-Chemicals & Allied Products 0.88%
Trucking (No Local) 0.76%
Construction - Special Trade Contractors 0.73%
Transportation Services 0.33%
Motor Vehicle Parts & Accessories 3.25%
Services-Business Services, NEC 1.85%
Industrial Instruments For Measurement, Display, and Control 1.73%
Services-Miscellaneous Amusement & Recreation 1.61%
Services-Miscellaneous Business Services 0.90%
Services-Membership Sports & Recreation Clubs 0.84%
Retail-Catalog & Mail-Order Houses 0.83%
Instruments For Meas & Testing of Electricity & Elec Signals 0.66%
Retail-Eating Places 0.47%
Security & Commodity Brokers, Dealers, Exchanges & Services 1.73%
Hospital & Medical Service Plans 1.44%
National Commercial Banks 1.43%
Finance Services 1.06%
Short-Term Business Credit Institutions 1.04%
Investment Advice 0.92%
Personal Credit Institutions 0.51%
Chemicals & Allied Products 1.86%
Mining & Quarrying of Nonmetallic Minerals (No Fuels) 1.36%
Flat Glass 0.62%
Beverages 1.55%
Grain Mill Products 0.90%
Food and Kindred Products 0.67%
Real Estate 1.37%
Real Estate Investment Trusts 0.62%
Crude Petroleum & Natural Gas 1.16%
Refuse Systems 0.71%
Unclassified 14.86%

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