Holdings of William Blair Small-Mid Cap Growth Fund
WILLIAM BLAIR FUNDS ·82 declared positions · as of Mar 31, 2026
Original filing · Net assets 1.1B $ · Ten largest lines: 20.8 % of the equity sleeve
Sector breakdown
- Industrials 5.8 %
- Technology 5.4 %
- Materials 5.1 %
- Financials 3.4 %
- Health care 2.0 %
- Unattributed 78.4 %
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 93.6 %
- CA 2.5 %
- IE 1.7 %
- KY 1.2 %
- JE 1.0 %
Shares computed on the equity sleeve.
| Rank | Country | Lines | Value | Share |
|---|---|---|---|---|
| 1 | US | 77 | 1B $ | 93.60 % |
| 2 | CA | 2 | 27.5M $ | 2.48 % |
| 3 | IE | 1 | 18.8M $ | 1.70 % |
| 4 | KY | 1 | 13.6M $ | 1.23 % |
| 5 | JE | 1 | 11.1M $ | 1.00 % |
Positions
| Rank | Company | Shares | Value | Weight |
|---|---|---|---|---|
| 1 | Primo Brands Corp | 1,328,343 | 25M $ | 2.22 % |
| 2 | Twist Bioscience Corp | 512,073 | 24.3M $ | 2.16 % |
| 3 | Lattice Semiconductor Corp | 256,685 | 23.8M $ | 2.11 % |
| 4 | BWX Technologies Inc | 112,849 | 23.1M $ | 2.05 % |
| 5 | F5 Inc | 78,244 | 22.6M $ | 2.01 % |
| 6 | Mueller Industries Inc | 204,200 | 22.6M $ | 2.01 % |
| 7 | Akamai Technologies Inc | 196,800 | 22.6M $ | 2.01 % |
| 8 | Nextpower Inc | 184,900 | 22.3M $ | 1.98 % |
| 9 | Onto Innovation Inc | 108,666 | 22.3M $ | 1.98 % |
| 10 | Insmed Inc | 132,551 | 21.7M $ | 1.92 % |
| 11 | TALEN ENERGY CORP | 66,500 | 21.2M $ | 1.89 % |
| 12 | Madrigal Pharmaceuticals Inc | 38,600 | 20.2M $ | 1.79 % |
| 13 | Everpure Inc | 342,100 | 20.2M $ | 1.79 % |
| 14 | Curtiss-Wright Corp | 29,100 | 19.8M $ | 1.76 % |
| 15 | Everest Group Ltd | 59,132 | 19.3M $ | 1.72 % |
| 16 | Coherent Corp | 80,600 | 19.2M $ | 1.71 % |
| 17 | nVent Electric PLC | 159,100 | 18.8M $ | 1.67 % |
| 18 | Globus Medical Inc | 217,495 | 18.7M $ | 1.66 % |
| 19 | Cameco Corp | 172,388 | 18.7M $ | 1.66 % |
| 20 | Clean Harbors Inc | 65,100 | 18.7M $ | 1.66 % |
| 21 | Ciena Corp | 44,500 | 17.3M $ | 1.53 % |
| 22 | Carpenter Technology Corp | 43,500 | 17.1M $ | 1.52 % |
| 23 | First Horizon Corp | 746,500 | 17M $ | 1.51 % |
| 24 | Donaldson Co Inc | 195,700 | 16.6M $ | 1.48 % |
| 25 | Lincoln Electric Holdings Inc | 64,200 | 16M $ | 1.42 % |
| 26 | Halozyme Therapeutics Inc | 244,400 | 15.8M $ | 1.40 % |
| 27 | Bio-Techne Corp | 298,700 | 15.6M $ | 1.39 % |
| 28 | Bentley Systems Inc | 443,300 | 15.6M $ | 1.38 % |
| 29 | Carlyle Group Inc/The | 317,493 | 15.4M $ | 1.36 % |
| 30 | Churchill Downs Inc | 164,900 | 14.8M $ | 1.32 % |
| 31 | Reliance Inc | 48,300 | 14.7M $ | 1.30 % |
| 32 | Grand Canyon Education Inc | 85,200 | 14.5M $ | 1.29 % |
| 33 | Dynatrace Inc | 386,586 | 14.3M $ | 1.27 % |
| 34 | BorgWarner Inc | 262,697 | 14.3M $ | 1.27 % |
| 35 | Sterling Infrastructure Inc | 34,700 | 14.1M $ | 1.26 % |
| 36 | Regal Rexnord Corp | 73,700 | 13.8M $ | 1.23 % |
| 37 | SharkNinja Inc | 128,500 | 13.6M $ | 1.21 % |
| 38 | Baldwin Insurance Group Inc/The | 603,410 | 13.2M $ | 1.18 % |
| 39 | Advanced Drainage Systems Inc | 96,200 | 13.2M $ | 1.17 % |
| 40 | HealthEquity Inc | 156,800 | 13.1M $ | 1.16 % |
| 41 | Guardant Health Inc | 139,700 | 12.9M $ | 1.15 % |
| 42 | Manhattan Associates Inc | 92,400 | 12.3M $ | 1.09 % |
| 43 | Planet Fitness Inc | 165,300 | 12.3M $ | 1.09 % |
| 44 | Glaukos Corp | 114,100 | 12.3M $ | 1.09 % |
| 45 | Cullen/Frost Bankers Inc | 89,500 | 12.3M $ | 1.09 % |
| 46 | Cava Group Inc | 147,600 | 11.9M $ | 1.06 % |
| 47 | Parsons Corp | 218,300 | 11.8M $ | 1.05 % |
| 48 | Eagle Materials Inc | 61,187 | 11.6M $ | 1.03 % |
| 49 | Doximity Inc | 497,252 | 11.6M $ | 1.03 % |
| 50 | Power Integrations Inc | 220,514 | 11.3M $ | 1.00 % |
| 51 | Birkenstock Holding Plc | 309,300 | 11.1M $ | 0.98 % |
| 52 | Synaptics Inc | 157,600 | 11M $ | 0.98 % |
| 53 | Pool Corp | 54,400 | 11M $ | 0.98 % |
| 54 | Kennametal Inc | 298,400 | 10.8M $ | 0.96 % |
| 55 | Evercore Inc | 35,200 | 10.5M $ | 0.93 % |
| 56 | Appfolio Inc | 66,246 | 10.5M $ | 0.93 % |
| 57 | Bright Horizons Family Solutions Inc | 127,178 | 10.4M $ | 0.93 % |
| 58 | Freshpet Inc | 168,079 | 9.9M $ | 0.88 % |
| 59 | Casella Waste Systems Inc | 120,661 | 9.6M $ | 0.85 % |
| 60 | StepStone Group Inc | 199,666 | 9.5M $ | 0.85 % |
| 61 | National Vision Holdings Inc | 365,700 | 9.5M $ | 0.84 % |
| 62 | Encompass Health Corp | 97,917 | 9.5M $ | 0.84 % |
| 63 | Krystal Biotech Inc | 36,000 | 9.3M $ | 0.83 % |
| 64 | Littelfuse Inc | 26,900 | 9.1M $ | 0.81 % |
| 65 | Landbridge Co LLC | 130,297 | 9M $ | 0.80 % |
| 66 | Novanta Inc | 74,454 | 8.8M $ | 0.78 % |
| 67 | Saia Inc | 25,000 | 8.8M $ | 0.78 % |
| 68 | Maplebear Inc | 230,826 | 8.6M $ | 0.77 % |
| 69 | API Group Corp | 209,100 | 8.5M $ | 0.75 % |
| 70 | TransUnion | 113,700 | 7.9M $ | 0.70 % |
| 71 | Guidewire Software Inc | 50,155 | 7.5M $ | 0.67 % |
| 72 | Alignment Healthcare Inc | 420,600 | 7.4M $ | 0.66 % |
| 73 | BellRing Brands Inc | 445,200 | 7.2M $ | 0.64 % |
| 74 | Cytokinetics Inc | 108,500 | 7.2M $ | 0.64 % |
| 75 | FirstService Corp | 47,835 | 6.6M $ | 0.59 % |
| 76 | TPG Inc | 163,324 | 6.6M $ | 0.59 % |
| 77 | Louisiana-Pacific Corp | 87,200 | 6.3M $ | 0.56 % |
| 78 | Inspire Medical Systems Inc | 109,400 | 5.6M $ | 0.50 % |
| 79 | WillScot Holdings Corp | 286,848 | 5M $ | 0.44 % |
| 80 | GeneDx Holdings Corp | 73,218 | 4.7M $ | 0.42 % |
| 81 | Insulet Corp | 20,365 | 4.3M $ | 0.38 % |
| 82 | ACV Auctions Inc | 639,781 | 2.7M $ | 0.24 % |