William Blair Investment Management
Active equity managersFiles as WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (SEC CIK 1644956). Portfolio from its latest quarterly 13F-HR filing.
- $30.82B
- Tracked value
- 394
- Positions
- Q3 2026
- Portfolio as of
- Nov 6, 2026
- Filed
Holdings
Top 100 of 394 tracked positions, by value| # | Company | Portfolio % | vs Q2 2026 | Shares | Value |
|---|---|---|---|---|---|
| 1 | TSMTAIWAN SEMICONDUCTOR MANUFACTURING CO LTD | 6.8% | ▼ 7.1% | 4,586,962 | $2.09B |
| 2 | NVDANVIDIA CORP | 6.0% | ▼ 5.5% | 8,123,638 | $1.86B |
| 3 | GOOGLAlphabet Inc. | 4.0% | ▲ 13.1% | 3,608,059 | $1.24B |
| 4 | AAPLApple Inc. | 3.3% | ▼ 7.3% | 3,022,828 | $1.01B |
| 5 | MSFTMICROSOFT CORP | 2.8% | ▼ 16.5% | 1,711,417 | $877.79M |
| 6 | AVGOBroadcom Inc. | 2.3% | ▼ 3.5% | 1,983,340 | $696.53M |
| 7 | METAMeta Platforms, Inc. | 1.9% | ▼ 15.1% | 806,777 | $585.06M |
| 8 | AMDADVANCED MICRO DEVICES INC | 1.6% | ▲ 2.6% | 783,197 | $479.13M |
| 9 | MAMastercard Inc | 1.3% | ▼ 22.9% | 707,647 | $390.25M |
| 10 | PEverpure, Inc. | 1.1% | ▼ 26.2% | 2,549,694 | $333.45M |
| 11 | AMZNAMAZON COM INC | 1.1% | ▼ 32.9% | 1,332,803 | $332.07M |
| 12 | AMATAPPLIED MATERIALS INC /DE | 1.0% | ▲ 21.8% | 606,347 | $310.07M |
| 13 | TWSTTwist Bioscience Corp | 0.9% | ▼ 33.1% | 1,454,117 | $280.99M |
| 14 | CGCarlyle Group Inc. | 0.9% | ▲ 15.3% | 6,821,563 | $270.54M |
| 15 | GEGENERAL ELECTRIC CO | 0.9% | ▲ 8.1% | 854,907 | $266.98M |
| 16 | BAPCREDICORP LTD | 0.9% | ▲ 11.9% | 699,385 | $265.68M |
| 17 | SNOWSnowflake Inc. | 0.9% | ▼ 13.3% | 781,249 | $265.28M |
| 18 | APHAMPHENOL CORP /DE/ | 0.8% | ▲ 0.6% | 3,087,928 | $260.31M |
| 19 | STXSeagate Technology Holdings plc | 0.8% | ▲ 45.1% | 276,990 | $255.48M |
| 20 | MLIMUELLER INDUSTRIES INC | 0.8% | ▲ 105% | 4,072,710 | $246.85M |
| 21 | FFIVF5, INC. | 0.8% | ▼ 6.7% | 546,951 | $243.49M |
| 22 | TEVATEVA PHARMACEUTICAL INDUSTRIES LTD | 0.8% | NEW | 6,118,972 | $242.31M |
| 23 | RGENREPLIGEN CORP | 0.8% | ▲ 57.7% | 1,243,415 | $239.02M |
| 24 | MUMICRON TECHNOLOGY INC | 0.8% | ▲ 1,496% | 224,405 | $239.02M |
| 25 | ARGXARGENX SE | 0.8% | ▼ 6.5% | 247,401 | $237.2M |
| 26 | CRWDCrowdStrike Holdings, Inc. | 0.8% | ▼ 20.9% | 890,794 | $235.84M |
| 27 | DTDynatrace, Inc. | 0.7% | ▲ 0.4% | 3,873,980 | $223.68M |
| 28 | BWABORGWARNER INC | 0.7% | ▼ 1.9% | 3,712,405 | $223.15M |
| 29 | PRMBPrimo Brands Corp | 0.7% | ▼ 1.7% | 11,230,798 | $213.95M |
| 30 | ESTCElastic N.V. | 0.7% | NEW | 2,315,469 | $212.33M |
| 31 | TLNTalen Energy Corp | 0.7% | ▲ 36.2% | 677,759 | $211.93M |
| 32 | AAGILENT TECHNOLOGIES, INC. | 0.7% | ▼ 4.8% | 1,225,480 | $211.16M |
| 33 | LINLINDE PLC | 0.7% | ▼ 13.5% | 437,021 | $207.43M |
| 34 | ONTOONTO INNOVATION INC. | 0.7% | ▼ 2.0% | 652,188 | $200.76M |
| 35 | ITUBItau Unibanco Holding S.A. | 0.6% | ▼ 24.8% | 21,269,537 | $181.4M |
| 36 | HALOHALOZYME THERAPEUTICS, INC. | 0.6% | ▼ 35.6% | 1,616,472 | $178.46M |
| 37 | UNHUNITEDHEALTH GROUP INC | 0.6% | ▼ 7.4% | 484,420 | $177.82M |
| 38 | NOWServiceNow, Inc. | 0.6% | ▼ 15.1% | 1,316,931 | $176.48M |
| 39 | KRYSKrystal Biotech, Inc. | 0.6% | ▼ 8.6% | 520,925 | $173.24M |
| 40 | EGEVEREST GROUP, LTD. | 0.6% | ▼ 1.8% | 471,187 | $172.06M |
| 41 | MDGLMADRIGAL PHARMACEUTICALS, INC. | 0.6% | ▲ 4.0% | 337,035 | $169.85M |
| 42 | MANHMANHATTAN ASSOCIATES INC | 0.5% | ▲ 25.5% | 847,546 | $168.41M |
| 43 | APPFAPPFOLIO INC | 0.5% | ▲ 15.8% | 836,167 | $167.67M |
| 44 | GHGuardant Health, Inc. | 0.5% | ▼ 28.5% | 937,974 | $167.3M |
| 45 | VSHVISHAY INTERTECHNOLOGY INC | 0.5% | ▲ 248% | 5,124,041 | $166.79M |
| 46 | CWCURTISS WRIGHT CORP | 0.5% | ▼ 3.6% | 305,868 | $166.34M |
| 47 | COSTCOSTCO WHOLESALE CORP /NEW | 0.5% | ▼ 9.9% | 179,618 | $163.51M |
| 48 | IDXXIDEXX LABORATORIES INC /DE | 0.5% | ▲ 2.7% | 306,107 | $159.85M |
| 49 | CNQCANADIAN NATURAL RESOURCES Ltd | 0.5% | ▼ 7.8% | 3,352,895 | $157.7M |
| 50 | AKAMAKAMAI TECHNOLOGIES INC | 0.5% | ▼ 4.8% | 1,462,172 | $155.5M |
| 51 | LOPEGrand Canyon Education, Inc. | 0.5% | ▼ 1.8% | 1,020,326 | $154.67M |
| 52 | NVTnVent Electric plc | 0.5% | ▼ 17.4% | 964,381 | $154.66M |
| 53 | HQYHEALTHEQUITY, INC. | 0.5% | ▼ 1.9% | 1,740,078 | $153.93M |
| 54 | TRUTransUnion | 0.5% | ▼ 6.9% | 2,465,258 | $150.68M |
| 55 | WSTWEST PHARMACEUTICAL SERVICES INC | 0.5% | ▼ 4.3% | 399,467 | $148.11M |
| 56 | TXNTEXAS INSTRUMENTS INC | 0.5% | ▲ 4.2% | 527,520 | $147.75M |
| 57 | CCJCAMECO CORP | 0.5% | ▼ 9.9% | 1,674,206 | $145.1M |
| 58 | DIODDIODES INC /DEL/ | 0.5% | ▼ 11.1% | 1,496,460 | $144.84M |
| 59 | LSCCLATTICE SEMICONDUCTOR CORP | 0.5% | ▼ 1.9% | 1,138,357 | $143M |
| 60 | TTETotalEnergies SE | 0.5% | ▼ 8.5% | 1,665,143 | $142.83M |
| 61 | EHCEncompass Health Corp | 0.5% | ▲ 1.3% | 1,166,552 | $141.72M |
| 62 | CHRWC. H. ROBINSON WORLDWIDE, INC. | 0.5% | ▼ 3.6% | 942,784 | $139.49M |
| 63 | MNSTMonster Beverage Corp | 0.4% | ▼ 34.7% | 3,315,668 | $138M |
| 64 | HBMHudbay Minerals Inc. | 0.4% | ▲ 21.9% | 5,137,438 | $137.07M |
| 65 | LECOLINCOLN ELECTRIC HOLDINGS INC | 0.4% | ▼ 2.2% | 495,893 | $131.2M |
| 66 | FHNFIRST HORIZON CORP | 0.4% | ▲ 16.0% | 5,576,059 | $128.36M |
| 67 | CLHCLEAN HARBORS INC | 0.4% | ▼ 2.0% | 410,744 | $127.43M |
| 68 | BWXTBWX Technologies, Inc. | 0.4% | ▼ 1.7% | 924,774 | $126.69M |
| 69 | VCYTVERACYTE, INC. | 0.4% | ▲ 89.2% | 2,709,212 | $124.73M |
| 70 | CRSCARPENTER TECHNOLOGY CORP | 0.4% | ▼ 3.9% | 319,564 | $124.25M |
| 71 | LFUSLITTELFUSE INC /DE | 0.4% | ▼ 9.1% | 292,546 | $123.96M |
| 72 | MARMARRIOTT INTERNATIONAL INC /MD/ | 0.4% | ▲ 14.6% | 344,925 | $122.68M |
| 73 | RACEFerrari N.V. | 0.4% | ▲ 108% | 308,492 | $121.19M |
| 74 | LRCXLAM RESEARCH CORP | 0.4% | ▲ 256% | 363,995 | $119.58M |
| 75 | ORLYO REILLY AUTOMOTIVE INC | 0.4% | ▼ 24.8% | 1,395,139 | $119.16M |
| 76 | MIRMMirum Pharmaceuticals, Inc. | 0.4% | ▼ 1.5% | 1,383,348 | $118.25M |
| 77 | RRXREGAL REXNORD CORP | 0.4% | ▼ 18.3% | 728,099 | $112.94M |
| 78 | WGSGeneDx Holdings Corp. | 0.4% | ▲ 11.4% | 1,560,247 | $112.81M |
| 79 | ETSYETSY INC | 0.4% | ▼ 1.7% | 1,571,429 | $112.34M |
| 80 | PTCTPTC THERAPEUTICS, INC. | 0.4% | ▼ 1.7% | 1,693,624 | $109.71M |
| 81 | FPSForgent Power Solutions, Inc. | 0.4% | ▲ 16.3% | 2,925,175 | $109.52M |
| 82 | TKRTIMKEN CO | 0.4% | ▼ 2.5% | 930,785 | $108.67M |
| 83 | GMEDGLOBUS MEDICAL INC | 0.4% | ▲ 12.6% | 1,447,365 | $108.41M |
| 84 | STRLSTERLING INFRASTRUCTURE, INC. | 0.4% | ▼ 1.6% | 220,158 | $108.27M |
| 85 | GKOSGLAUKOS Corp | 0.3% | ▼ 1.5% | 651,456 | $106.96M |
| 86 | NOVTNOVANTA INC | 0.3% | ▼ 2.1% | 749,688 | $106.6M |
| 87 | CYTKCYTOKINETICS INC | 0.3% | ▼ 1.7% | 1,576,135 | $103.88M |
| 88 | FRPTFreshpet, Inc. | 0.3% | ▼ 1.8% | 1,778,013 | $102.34M |
| 89 | BSYBENTLEY SYSTEMS INC | 0.3% | ▼ 46.6% | 3,170,676 | $101.3M |
| 90 | JAZZJazz Pharmaceuticals plc | 0.3% | ▼ 2.0% | 428,249 | $99.15M |
| 91 | STEPStepStone Group Inc. | 0.3% | ▲ 17.9% | 2,276,447 | $98.8M |
| 92 | WFRDWeatherford International plc | 0.3% | ▼ 1.7% | 1,240,007 | $97.56M |
| 93 | EXPEAGLE MATERIALS INC | 0.3% | ▼ 1.4% | 568,629 | $97.25M |
| 94 | MMSIMERIT MEDICAL SYSTEMS INC | 0.3% | ▼ 1.6% | 1,119,581 | $96.54M |
| 95 | NUNu Holdings Ltd. | 0.3% | ▲ 0.2% | 7,610,814 | $96.35M |
| 96 | RSRELIANCE, INC. | 0.3% | ▼ 34.6% | 250,271 | $96.29M |
| 97 | JLLJONES LANG LASALLE INC | 0.3% | ▲ 339% | 315,152 | $96.29M |
| 98 | NBHCNational Bank Holdings Corp | 0.3% | ▼ 3.5% | 2,410,798 | $94.48M |
| 99 | LBLandBridge Corp | 0.3% | ▼ 7.2% | 1,146,546 | $93.07M |
| 100 | TPGTPG Inc. | 0.3% | ▲ 50.4% | 2,088,244 | $92.15M |
Positions in companies on Scrutar, from the manager's latest quarterly 13F-HR filing. 13F filings disclose US-listed long positions only and can be filed up to 45 days after quarter end, so the portfolio may have changed since. Portfolio % is each position's share of the tracked value shown above. Changes compare share counts against the Q2 2026 filing, adjusted for stock splits.
Never miss a William Blair Investment Management 13F.
Get an email when William Blair Investment Management files its next quarterly 13F with the SEC, including the portfolio's notable changes. Free, no account needed.
Free foreverNo account requiredOne-click unsubscribe
Source: SEC EDGAR Form 13F-HR filings.