Holdings of William Blair Small Cap Growth Fund
WILLIAM BLAIR FUNDS · 92 declared positions · as of Mar 31, 2026
Original filing · Net assets 992.3M $ · Ten largest lines: 18.6 % of the equity sleeve
Country breakdown
Shares computed on the equity sleeve, the only part this site carries.
| Country | Lines | Value (USD) | Share |
|---|---|---|---|
| US | 87 | 898.2M $ | 94.02 % |
| CA | 2 | 20.3M $ | 2.13 % |
| GB | 1 | 17.2M $ | 1.80 % |
| VG | 1 | 13.5M $ | 1.41 % |
| KY | 1 | 6.1M $ | 0.64 % |
Sector breakdown is published in no regulatory filing: neither Form N-PORT nor the LEI reference data carries an activity code. It is absent rather than estimated.
Positions
| Company | Shares | Value (USD) | Weight |
|---|---|---|---|
| Diebold Nixdorf Inc | 323,310 | 24.4M $ | 2.46 % |
| Twist Bioscience Corp | 449,874 | 21.4M $ | 2.15 % |
| Balchem Corp | 108,940 | 18.5M $ | 1.86 % |
| Cognex Corp | 351,240 | 17.2M $ | 1.73 % |
| Marex Group PLC | 385,570 | 17.2M $ | 1.73 % |
| Rush Street Interactive Inc | 736,150 | 16M $ | 1.61 % |
| Garrett Motion Inc | 878,759 | 16M $ | 1.61 % |
| Regal Rexnord Corp | 84,510 | 15.8M $ | 1.59 % |
| Globus Medical Inc | 180,603 | 15.6M $ | 1.57 % |
| Flowserve Corp | 209,950 | 15.4M $ | 1.56 % |
| Primo Brands Corp | 817,030 | 15.4M $ | 1.55 % |
| Bloom Energy Corp | 112,900 | 15.3M $ | 1.54 % |
| Grand Canyon Education Inc | 89,661 | 15.2M $ | 1.54 % |
| Nextpower Inc | 125,440 | 15.1M $ | 1.52 % |
| Old National Bancorp/IN | 680,690 | 15M $ | 1.52 % |
| Krystal Biotech Inc | 55,790 | 14.4M $ | 1.45 % |
| Alignment Healthcare Inc | 811,848 | 14.3M $ | 1.44 % |
| National Bank Holdings Corp | 362,130 | 14.2M $ | 1.43 % |
| Madrigal Pharmaceuticals Inc | 26,758 | 14M $ | 1.41 % |
| FirstService Corp | 97,817 | 13.6M $ | 1.37 % |
| United States Lime & Minerals Inc | 103,525 | 13.5M $ | 1.36 % |
| Establishment Labs Holdings Inc | 237,980 | 13.5M $ | 1.36 % |
| Weatherford International PLC | 140,960 | 13.3M $ | 1.34 % |
| Vericel Corp | 410,954 | 13.2M $ | 1.33 % |
| BWX Technologies Inc | 61,894 | 12.7M $ | 1.28 % |
| PDF Solutions Inc | 386,599 | 12.6M $ | 1.27 % |
| Merit Medical Systems Inc | 183,210 | 12.6M $ | 1.27 % |
| Champion Homes Inc | 167,169 | 12.4M $ | 1.25 % |
| Sterling Infrastructure Inc | 30,040 | 12.2M $ | 1.23 % |
| Brink's Co/The | 114,634 | 11.9M $ | 1.20 % |
| Baldwin Insurance Group Inc/The | 536,471 | 11.8M $ | 1.19 % |
| BKV Corp | 402,770 | 11.5M $ | 1.16 % |
| Novanta Inc | 95,070 | 11.2M $ | 1.13 % |
| Veracyte Inc | 342,133 | 11M $ | 1.11 % |
| Glaukos Corp | 102,340 | 11M $ | 1.11 % |
| Halozyme Therapeutics Inc | 167,040 | 10.8M $ | 1.09 % |
| Mirum Pharmaceuticals Inc | 115,733 | 10.7M $ | 1.08 % |
| Quaker Chemical Corp | 85,297 | 10.6M $ | 1.07 % |
| National Vision Holdings Inc | 405,706 | 10.5M $ | 1.06 % |
| Perella Weinberg Partners | 577,795 | 10.5M $ | 1.06 % |
| Appfolio Inc | 66,350 | 10.5M $ | 1.06 % |
| Jefferson Capital Inc | 539,047 | 10.4M $ | 1.04 % |
| OSI Systems Inc | 38,950 | 10.3M $ | 1.04 % |
| Esab Corp | 104,320 | 10.1M $ | 1.02 % |
| Power Integrations Inc | 195,985 | 10M $ | 1.01 % |
| iShares Russell 2000 Growth ETF | 31,550 | 9.9M $ | 1.00 % |
| Modine Manufacturing Co | 45,560 | 9.9M $ | 1.00 % |
| Agilysys Inc | 137,660 | 9.8M $ | 0.99 % |
| US Physical Therapy Inc | 130,522 | 9.8M $ | 0.99 % |
| Terex Corp | 162,420 | 9.6M $ | 0.97 % |
| Lattice Semiconductor Corp | 102,340 | 9.5M $ | 0.96 % |
| Helios Technologies Inc | 146,240 | 9.5M $ | 0.95 % |
| HealthEquity Inc | 112,240 | 9.4M $ | 0.95 % |
| Synaptics Inc | 132,710 | 9.3M $ | 0.94 % |
| StepStone Group Inc | 191,759 | 9.2M $ | 0.92 % |
| I3 Verticals Inc | 406,700 | 9.1M $ | 0.92 % |
| Hammond Power Solutions Inc | 72,755 | 9.1M $ | 0.92 % |
| Freshpet Inc | 152,180 | 9M $ | 0.90 % |
| Donnelley Financial Solutions Inc | 188,490 | 8.9M $ | 0.90 % |
| Hawkins Inc | 57,110 | 8.8M $ | 0.88 % |
| Zeta Global Holdings Corp | 550,960 | 8.8M $ | 0.88 % |
| Graham Corp | 108,610 | 8.6M $ | 0.86 % |
| Planet Fitness Inc | 112,570 | 8.4M $ | 0.84 % |
| Mercury Systems Inc | 113,098 | 8.2M $ | 0.83 % |
| Revolve Group Inc | 362,697 | 8.2M $ | 0.83 % |
| Littelfuse Inc | 23,770 | 8.1M $ | 0.81 % |
| Cytokinetics Inc | 120,490 | 7.9M $ | 0.80 % |
| Impinj Inc | 75,600 | 7.8M $ | 0.78 % |
| Knight-Swift Transportation Holdings Inc | 130,850 | 7.5M $ | 0.76 % |
| Onto Innovation Inc | 36,640 | 7.5M $ | 0.76 % |
| Argan Inc | 13,340 | 7.3M $ | 0.73 % |
| Casella Waste Systems Inc | 89,189 | 7.1M $ | 0.71 % |
| Amprius Technologies Inc | 404,390 | 6.8M $ | 0.69 % |
| Doximity Inc | 292,150 | 6.8M $ | 0.69 % |
| Simply Good Foods Co/The | 462,160 | 6.6M $ | 0.67 % |
| Aehr Test Systems | 177,373 | 6.6M $ | 0.66 % |
| Lumentum Holdings Inc | 9,200 | 6.5M $ | 0.65 % |
| BorgWarner Inc | 118,068 | 6.4M $ | 0.65 % |
| Inspire Medical Systems Inc | 122,468 | 6.3M $ | 0.64 % |
| Americold Realty Trust Inc | 539,080 | 6.2M $ | 0.62 % |
| Tecnoglass Inc | 137,889 | 6.1M $ | 0.62 % |
| Penguin Solutions Inc | 333,740 | 5.9M $ | 0.59 % |
| Vertex Inc | 442,020 | 5.3M $ | 0.53 % |
| OneMain Holdings Inc | 93,750 | 5M $ | 0.51 % |
| Q2 Holdings Inc | 104,184 | 4.9M $ | 0.50 % |
| Paymentus Holdings Inc | 185,856 | 4.7M $ | 0.48 % |
| Wingstop Inc | 30,040 | 4.7M $ | 0.47 % |
| ACV Auctions Inc | 1,007,304 | 4.3M $ | 0.43 % |
| GeneDx Holdings Corp | 61,865 | 4M $ | 0.40 % |
| PROCEPT BIOROBOTICS CORP | 146,570 | 3.7M $ | 0.37 % |
| Verra Mobility Corp | 229,615 | 3.3M $ | 0.33 % |
| Quanterix Corp | 719,776 | 2.5M $ | 0.26 % |