Basic Stats
| Portfolio Value | $ 897,351,621 |
| Current Positions | 94 |
Latest Holdings, Performance, AUM (from 13F, 13D)
WBSNX - William Blair Small Cap Growth Fund Class N has disclosed 94 total holdings in their latest SEC filings. Most recent portfolio value is calculated to be $ 897,351,621 USD. Actual Assets Under Management (AUM) is this value plus cash (which is not disclosed). WBSNX - William Blair Small Cap Growth Fund Class N’s top holdings are Casella Waste Systems, Inc. (US:CWST) , BWX Technologies, Inc. (US:BWXT) , The Brink's Company (US:BCO) , Varonis Systems, Inc. (US:VRNS) , and Confluent, Inc. (US:CFLT) . WBSNX - William Blair Small Cap Growth Fund Class N’s new positions include Lumentum Holdings Inc. (US:LITE) , AppFolio, Inc. (US:APPF) , The Simply Good Foods Company (US:SMPL) , Helios Technologies, Inc. (US:HLIO) , and Jefferson Capital, Inc. (US:JCAP) .
Top Increases This Quarter
We use the change in the portfolio allocation because this is the most meaningful metric. Changes can be due to trades or changes in share prices.
| Security | Shares (MM) |
Value (MM$) |
Portfolio % | ΔPortfolio % |
|---|---|---|---|---|
| 34.40 | 3.8340 | 3.8340 | ||
| 0.12 | 11.51 | 1.2832 | 1.2832 | |
| 0.04 | 10.35 | 1.1536 | 1.1536 | |
| 0.12 | 17.61 | 1.9629 | 0.9454 | |
| 0.24 | 7.48 | 0.8341 | 0.8341 | |
| 0.21 | 7.09 | 0.7904 | 0.7904 | |
| 0.69 | 15.12 | 1.6852 | 0.7371 | |
| 0.33 | 6.01 | 0.6702 | 0.6702 | |
| 0.19 | 5.92 | 0.6599 | 0.6599 | |
| 0.89 | 13.08 | 1.4582 | 0.5916 |
Top Decreases This Quarter
We use the change in the portfolio allocation because this is the most meaningful metric. Changes can be due to trades or changes in share prices.
| Security | Shares (MM) |
Value (MM$) |
Portfolio % | ΔPortfolio % |
|---|---|---|---|---|
| 0.20 | 4.61 | 0.5135 | -0.7030 | |
| 0.50 | 6.97 | 0.7772 | -0.6312 | |
| 0.17 | 0.83 | 0.0922 | -0.5869 | |
| 0.12 | 7.90 | 0.8805 | -0.5733 | |
| 0.21 | 11.36 | 1.2660 | -0.5281 | |
| 0.15 | 17.67 | 1.9689 | -0.5065 | |
| 0.08 | 12.65 | 1.4096 | -0.4824 | |
| 0.16 | 6.28 | 0.7003 | -0.4821 | |
| 0.13 | 7.96 | 0.8866 | -0.4713 | |
| 0.28 | 11.85 | 1.3208 | -0.3948 |
13F and Fund Filings
This form was filed on 2025-08-20 for the reporting period 2025-06-30. Click the link icon to see the full transaction history.
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| Security | Type | Avg Share Price | Shares (MM) |
ΔShares (%) |
ΔShares (%) |
Value ($MM) |
Portfolio (%) |
ΔPortfolio (%) |
|
|---|---|---|---|---|---|---|---|---|---|
| FIXED INC CLEARING CORP.REPO / RA (000000000) | 34.40 | 3.8340 | 3.8340 | ||||||
| CWST / Casella Waste Systems, Inc. | 0.15 | -19.24 | 17.67 | -16.45 | 1.9689 | -0.5065 | |||
| BWXT / BWX Technologies, Inc. | 0.12 | 38.78 | 17.61 | 102.68 | 1.9629 | 0.9454 | |||
| BCO / The Brink's Company | 0.19 | 3.47 | 16.70 | 7.22 | 1.8610 | 0.0377 | |||
| VRNS / Varonis Systems, Inc. | 0.32 | 3.82 | 16.11 | 30.26 | 1.7954 | 0.3473 | |||
| CFLT / Confluent, Inc. | 0.61 | 25.70 | 15.19 | 33.71 | 1.6932 | 0.3627 | |||
| MEG / Montrose Environmental Group, Inc. | 0.69 | 21.64 | 15.12 | 86.73 | 1.6852 | 0.7371 | |||
| DOCS / Doximity, Inc. | 0.24 | 1.10 | 14.63 | 6.86 | 1.6300 | 0.0276 | |||
| FSV / FirstService Corporation | 0.08 | 3.62 | 14.38 | 9.04 | 1.6025 | 0.0586 | |||
| QTWO / Q2 Holdings, Inc. | 0.15 | 3.57 | 14.05 | 21.15 | 1.5653 | 0.2079 | |||
| RSI / Rush Street Interactive, Inc. | 0.90 | 3.75 | 13.43 | 44.21 | 1.4965 | 0.4063 | |||
| ESTA / Establishment Labs Holdings Inc. | 0.31 | 1.06 | 13.26 | 5.78 | 1.4783 | 0.0102 | |||
| GOGO / Gogo Inc. | 0.89 | 3.80 | 13.08 | 76.79 | 1.4582 | 0.5916 | |||
| PRMB / Primo Brands Corporation | 0.44 | 3.73 | 12.91 | -13.43 | 1.4384 | -0.3070 | |||
| FTAI / FTAI Aviation Ltd. | 0.11 | 3.81 | 12.79 | 7.56 | 1.4259 | 0.0332 | |||
| TWST / Twist Bioscience Corporation | 0.35 | 16.49 | 12.76 | 9.16 | 1.4218 | 0.0536 | |||
| BCPC / Balchem Corporation | 0.08 | -18.39 | 12.65 | -21.73 | 1.4096 | -0.4824 | |||
| USLM / United States Lime & Minerals, Inc. | 0.13 | 23.36 | 12.62 | 39.31 | 1.4065 | 0.3458 | |||
| FROG / JFrog Ltd. | 0.28 | -14.30 | 12.43 | 17.51 | 1.3858 | 0.1470 | |||
| NOVT / Novanta Inc. | 0.10 | 3.81 | 12.30 | 4.67 | 1.3705 | -0.0050 | |||
| DBD / Diebold Nixdorf, Incorporated | 0.22 | 6.07 | 12.21 | 34.40 | 1.3613 | 0.2973 | |||
| ACVA / ACV Auctions Inc. | 0.74 | 3.83 | 12.06 | 19.53 | 1.3440 | 0.1628 | |||
| MMSI / Merit Medical Systems, Inc. | 0.13 | 1.24 | 11.96 | -10.47 | 1.3333 | -0.2312 | |||
| BWIN / The Baldwin Insurance Group, Inc. | 0.28 | -15.57 | 11.85 | -19.12 | 1.3208 | -0.3948 | |||
| LITE / Lumentum Holdings Inc. | 0.12 | 11.51 | 1.2832 | 1.2832 | |||||
| MRCY / Mercury Systems, Inc. | 0.21 | -40.69 | 11.36 | -25.87 | 1.2660 | -0.5281 | |||
| PLNT / Planet Fitness, Inc. | 0.10 | -20.98 | 11.21 | -10.81 | 1.2498 | -0.2223 | |||
| GMED / Globus Medical, Inc. | 0.19 | 28.32 | 11.15 | 3.46 | 1.2432 | -0.0191 | |||
| VCEL / Vericel Corporation | 0.26 | -14.75 | 10.98 | -18.71 | 1.2239 | -0.3577 | |||
| LRN / Stride, Inc. | 0.07 | -10.40 | 10.73 | 2.84 | 1.1956 | -0.0258 | |||
| WAL / Western Alliance Bancorporation | 0.13 | -13.03 | 10.44 | -11.73 | 1.1639 | -0.2213 | |||
| APPF / AppFolio, Inc. | 0.04 | 10.35 | 1.1536 | 1.1536 | |||||
| OSW / OneSpaWorld Holdings Limited | 0.50 | -13.10 | 10.20 | 5.52 | 1.1373 | 0.0051 | |||
| WSC / WillScot Holdings Corporation | 0.37 | 25.93 | 10.19 | 24.12 | 1.1352 | 0.1744 | |||
| VRRM / Verra Mobility Corporation | 0.40 | 33.25 | 10.18 | 50.30 | 1.1349 | 0.3417 | |||
| CWAN / Clearwater Analytics Holdings, Inc. | 0.46 | 3.80 | 10.14 | -15.07 | 1.1296 | -0.2676 | |||
| STEP / StepStone Group Inc. | 0.18 | 3.65 | 10.02 | 10.14 | 1.1167 | 0.0515 | |||
| ONB / Old National Bancorp | 0.46 | -16.45 | 9.87 | -15.85 | 1.0997 | -0.2732 | |||
| AGYS / Agilysys, Inc. | 0.08 | 0.70 | 9.61 | -12.35 | 1.0706 | -0.1146 | |||
| OMF / OneMain Holdings, Inc. | 0.17 | 4.01 | 9.60 | 21.29 | 1.0694 | 0.1431 | |||
| CAKE / The Cheesecake Factory Incorporated | 0.15 | 3.58 | 9.55 | 33.38 | 1.0640 | 0.2259 | |||
| HMDPF / Hammond Power Solutions Inc. | 0.10 | 7.52 | 9.39 | 87.27 | 1.0463 | 0.4593 | |||
| GTX / Garrett Motion Inc. | 0.89 | 3.83 | 9.33 | 30.37 | 1.0395 | 0.2019 | |||
| MDGL / Madrigal Pharmaceuticals, Inc. | 0.03 | 1.35 | 9.29 | -7.40 | 1.0354 | -0.1392 | |||
| WGS / GeneDx Holdings Corp. | 0.10 | -18.16 | 9.14 | -14.71 | 1.0188 | -0.2360 | |||
| IWO / iShares Trust - iShares Russell 2000 Growth ETF | 0.03 | -1.55 | 9.10 | 10.14 | 1.0147 | 0.0469 | |||
| VERX / Vertex, Inc. | 0.26 | 3.76 | 9.07 | 4.72 | 1.0110 | -0.0032 | |||
| INSP / Inspire Medical Systems, Inc. | 0.07 | 1.04 | 9.04 | -17.68 | 1.0080 | -0.2783 | |||
| CECO / CECO Environmental Corp. | 0.32 | 3.80 | 9.01 | 28.88 | 1.0047 | 0.1858 | |||
| EHC / Encompass Health Corporation | 0.07 | -26.27 | 8.78 | -10.73 | 0.9787 | -0.1729 | |||
| VITL / Vital Farms, Inc. | 0.22 | 3.78 | 8.63 | 31.19 | 0.9614 | 0.1916 | |||
| RUSHA / Rush Enterprises, Inc. | 0.17 | 4.48 | 8.59 | 0.76 | 0.9577 | -0.0408 | |||
| DFIN / Donnelley Financial Solutions, Inc. | 0.14 | 3.97 | 8.55 | 46.65 | 0.9525 | 0.2702 | |||
| ASO / Academy Sports and Outdoors, Inc. | 0.19 | 15.54 | 8.50 | 13.52 | 0.9472 | 0.0706 | |||
| ONTO / Onto Innovation Inc. | 0.08 | 62.51 | 8.18 | 35.19 | 0.9112 | 0.2030 | |||
| CGNX / Cognex Corporation | 0.26 | 3.74 | 8.17 | 10.32 | 0.9102 | 0.0434 | |||
| SITM / SiTime Corporation | 0.04 | 2.96 | 8.08 | 43.52 | 0.9008 | 0.2414 | |||
| SKY / Champion Homes, Inc. | 0.13 | 3.82 | 7.96 | -31.41 | 0.8866 | -0.4713 | |||
| MOD / Modine Manufacturing Company | 0.08 | 24.73 | 7.95 | 60.08 | 0.8864 | 0.3047 | |||
| WNS / WNS (Holdings) Limited | 0.12 | -38.14 | 7.90 | -36.38 | 0.8805 | -0.5733 | |||
| WINA / Winmark Corporation | 0.02 | -31.65 | 7.74 | -18.81 | 0.8624 | -0.2534 | |||
| WFRD / Weatherford International plc | 0.15 | 3.54 | 7.59 | -2.72 | 0.8457 | -0.0676 | |||
| SMPL / The Simply Good Foods Company | 0.24 | 7.48 | 0.8341 | 0.8341 | |||||
| PDFS / PDF Solutions, Inc. | 0.34 | 3.92 | 7.32 | 16.27 | 0.8157 | 0.0787 | |||
| MIR / Mirion Technologies, Inc. | 0.34 | 3.73 | 7.30 | 54.03 | 0.8134 | 0.2586 | |||
| BKV / BKV Corporation | 0.30 | 3.60 | 7.18 | 19.00 | 0.8007 | 0.0938 | |||
| ELF / e.l.f. Beauty, Inc. | 0.06 | -27.91 | 7.16 | 42.89 | 0.7976 | 0.2112 | |||
| HLIO / Helios Technologies, Inc. | 0.21 | 7.09 | 0.7904 | 0.7904 | |||||
| FOXF / Fox Factory Holding Corp. | 0.27 | 3.80 | 7.01 | 15.36 | 0.7818 | 0.0699 | |||
| FOLD / Amicus Therapeutics, Inc. | 1.22 | 0.98 | 6.98 | -29.09 | 0.7774 | -0.3743 | |||
| ALHC / Alignment Healthcare, Inc. | 0.50 | -22.90 | 6.97 | -42.03 | 0.7772 | -0.6312 | |||
| AIN / Albany International Corp. | 0.10 | 3.62 | 6.95 | 5.26 | 0.7740 | 0.0015 | |||
| TGLS / Tecnoglass Inc. | 0.09 | 3.28 | 6.84 | 11.68 | 0.7619 | 0.0452 | |||
| LOPE / Grand Canyon Education, Inc. | 0.04 | -43.28 | 6.62 | -21.31 | 0.7381 | -0.2972 | |||
| COLD / Americold Realty Trust, Inc. | 0.40 | 3.83 | 6.59 | -19.54 | 0.7342 | -0.2244 | |||
| ZETA / Zeta Global Holdings Corp. | 0.42 | 36.05 | 6.51 | 55.40 | 0.7259 | 0.2352 | |||
| PRCT / PROCEPT BioRobotics Corporation | 0.11 | 0.92 | 6.36 | -0.22 | 0.7091 | -0.0375 | |||
| MRX / Marex Group plc | 0.16 | -44.32 | 6.28 | -37.79 | 0.7003 | -0.4821 | |||
| WCPRF / Whitecap Resources Inc. | 0.93 | -30.41 | 6.28 | -27.50 | 0.7002 | -0.3143 | |||
| TMCI / Treace Medical Concepts, Inc. | 1.05 | 0.96 | 6.18 | -29.25 | 0.6889 | -0.3340 | |||
| JCAP / Jefferson Capital, Inc. | 0.33 | 6.01 | 0.6702 | 0.6702 | |||||
| AR / Antero Resources Corporation | 0.15 | -15.67 | 5.97 | -16.00 | 0.6653 | -0.1667 | |||
| AHL.PRF / Aspen Insurance Holdings Limited - Preferred Security | 0.19 | 5.92 | 0.6599 | 0.6599 | |||||
| FRPT / Freshpet, Inc. | 0.09 | 3.38 | 5.88 | -15.53 | 0.6548 | -0.1595 | |||
| WAY / Waystar Holding Corp. | 0.14 | 1.04 | 5.70 | 10.54 | 0.6350 | 0.0315 | |||
| GDYN / Grid Dynamics Holdings, Inc. | 0.49 | 3.83 | 5.67 | -23.37 | 0.6316 | -0.2343 | |||
| ZIP / ZipRecruiter, Inc. | 1.06 | 3.83 | 5.31 | -11.69 | 0.5921 | -0.1122 | |||
| GKOS / Glaukos Corporation | 0.05 | -52.17 | 5.11 | -9.29 | 0.5700 | -0.2685 | |||
| EYE / National Vision Holdings, Inc. | 0.20 | -55.12 | 4.61 | -53.41 | 0.5135 | -0.7030 | |||
| KRYS / Krystal Biotech, Inc. | 0.03 | 4.24 | 0.4720 | 0.4720 | |||||
| COCO / The Vita Coco Company, Inc. | 0.11 | -50.74 | 3.92 | -41.98 | 0.4369 | -0.3542 | |||
| RVLV / Revolve Group, Inc. | 0.16 | 4.18 | 3.27 | -2.82 | 0.3650 | -0.0295 | |||
| QTRX / Quanterix Corporation | 0.38 | 1.06 | 2.53 | 3.23 | 0.2817 | -0.0050 | |||
| NEOG / Neogen Corporation | 0.17 | -74.13 | 0.83 | -85.74 | 0.0922 | -0.5869 | |||
| US68218J3014 / OmniAb, Inc. | 0.02 | 0.00 | 0.00 | 0.0000 | 0.0000 | ||||
| US68218J2024 / OmniAb, Inc. | 0.02 | 0.00 | 0.00 | 0.0000 | 0.0000 |
