Holders — by stockHoldings — by fund
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Everything this manager disclosed owning in US-listed stocks — its complete Form 13F portfolio · as of 2026-06-30 · filed with the SEC up to 45 days after quarter end · CIK 1644956
$33.25B
disclosed book value
403
positions
7.1%
largest position share
Positions, as of 2026-06-30
top 100 of 403 · 13F covers long US-listed positions only — cash, bonds, private and foreign stakes are not disclosed · PUT/CALL tags = options positions (share-equivalents), not shares held
| # | Issuer | Shares | Value | % of book |
|---|---|---|---|---|
| 1 | TSMTAIWAN SEMICONDUCTOR MANUFAC | 4.9M | $2.36B | 7.1% |
| 2 | NVDANVIDIA CORPORATION | 8.6M | $1.72B | 5.2% |
| 3 | GOOGLALPHABET INC | 3.2M | $1.14B | 3.4% |
| 4 | AAPLAPPLE INC | 3.3M | $943.3M | 2.8% |
| 5 | AVGOBROADCOM INC | 2.1M | $776.7M | 2.3% |
| 6 | MSFTMICROSOFT CORP | 2.0M | $764.2M | 2.3% |
| 7 | METAMETA PLATFORMS INC | 950,115 | $535.2M | 1.6% |
| 8 | AMZNAMAZON COM INC | 2.0M | $473.6M | 1.4% |
| 9 | MAMASTERCARD INCORPORATED | 918,005 | $471.5M | 1.4% |
| 10 | AMDADVANCED MICRO DEVICES INC | 763,517 | $443.5M | 1.3% |
| 11 | AMATAPPLIED MATLS INC | 497,946 | $360.0M | 1.1% |
| 12 | GEGE AEROSPACE | 790,801 | $295.5M | 0.9% |
| 13 | ASTRAZENECA PLC | 1.5M | $283.2M | 0.9% |
| 14 | PRMBPRIMO BRANDS CORPORATION | 11.4M | $279.3M | 0.8% |
| 15 | PEVERPURE INC | 3.5M | $272.2M | 0.8% |
| 16 | APHAMPHENOL CORP | 1.5M | $270.7M | 0.8% |
| 17 | LINDE PLC | 504,953 | $262.0M | 0.8% |
| 18 | ONTOONTO INNOVATION INC | 665,377 | $251.8M | 0.8% |
| 19 | BWABORGWARNER INC | 3.8M | $251.3M | 0.8% |
| 20 | CGCARLYLE GROUP INC | 5.9M | $249.1M | 0.7% |
| 21 | ARGXARGENX SE | 264,617 | $245.5M | 0.7% |
| 22 | MLIMUELLER INDS INC | 2.0M | $244.2M | 0.7% |
| 23 | MNSTMONSTER BEVERAGE CORP NEW | 2.5M | $244.0M | 0.7% |
| 24 | FFIVF5 INC | 586,271 | $243.9M | 0.7% |
| 25 | CREDICORP LTD | 625,144 | $243.5M | 0.7% |
| 26 | CWCURTISS WRIGHT CORP | 317,306 | $240.4M | 0.7% |
| 27 | ITUBITAU UNIBANCO HLDG S A | 28.3M | $231.1M | 0.7% |
| 28 | SNOWSNOWFLAKE INC | 901,087 | $229.3M | 0.7% |
| 29 | TWSTTWIST BIOSCIENCE CORP | 2.2M | $223.7M | 0.7% |
| 30 | TEVATEVA PHARMACEUTICAL INDS LTD | 6.6M | $223.4M | 0.7% |
| 31 | UNHUNITEDHEALTH GROUP INC | 523,387 | $217.5M | 0.7% |
| 32 | CRWDCROWDSTRIKE HLDGS INC | 281,409 | $214.8M | 0.6% |
| 33 | RRXREGAL REXNORD CORPORATION | 891,139 | $212.3M | 0.6% |
| 34 | KRYSKRYSTAL BIOTECH INC | 570,153 | $211.9M | 0.6% |
| 35 | CRSCARPENTER TECHNOLOGY CORP | 332,607 | $205.2M | 0.6% |
| 36 | POWIPOWER INTEGRATIONS INC | 2.4M | $199.5M | 0.6% |
| 37 | NVENT ELEC PLC | 1.2M | $198.1M | 0.6% |
| 38 | GHGUARDANT HEALTH INC | 1.3M | $196.7M | 0.6% |
| 39 | HALOHALOZYME THERAPEUTICS INC | 2.5M | $196.5M | 0.6% |
| 40 | TLNTALEN ENERGY CORP | 497,660 | $191.2M | 0.6% |
| 41 | TRUTRANSUNION | 2.6M | $191.1M | 0.6% |
| 42 | CCJCAMECO CORP | 1.9M | $189.3M | 0.6% |
| 43 | STRLSTERLING INFRASTRUCTURE INC | 223,697 | $187.8M | 0.6% |
| 44 | COSTCOSTCO WHOLESALE CORPORATION | 199,355 | $186.5M | 0.6% |
| 45 | ALHCALIGNMENT HEALTHCARE INC | 7.8M | $184.8M | 0.6% |
| 46 | CHRWC H ROBINSON WORLDWIDE IN | 978,297 | $184.3M | 0.6% |
| 47 | SEAGATE TECHNOLOGY HLDNGS PL | 190,847 | $184.2M | 0.6% |
| 48 | DIODDIODES INC | 1.7M | $184.2M | 0.6% |
| 49 | BWXTBWX TECHNOLOGIES INC | 941,233 | $183.2M | 0.6% |
| 50 | AKAMAKAMAI TECHNOLOGIES INC | 1.5M | $181.5M | 0.5% |
| 51 | BWINTHE BALDWIN INSURANCE GRP IN | 6.7M | $179.0M | 0.5% |
| 52 | BSYBENTLEY SYS INC | 5.9M | $177.6M | 0.5% |
| 53 | LSCCLATTICE SEMICONDUCTOR CORP | 1.2M | $177.5M | 0.5% |
| 54 | MDGLMADRIGAL PHARMACEUTICALS INC | 324,123 | $174.0M | 0.5% |
| 55 | EVEREST GROUP LTD | 479,877 | $171.4M | 0.5% |
| 56 | AAGILENT TECHNOLOGIES INC | 1.3M | $171.0M | 0.5% |
| 57 | ORLYOREILLY AUTOMOTIVE INC | 1.9M | $170.8M | 0.5% |
| 58 | DTDYNATRACE INC | 3.9M | $169.4M | 0.5% |
| 59 | MIRMMIRUM PHARMACEUTICALS INC | 1.4M | $164.5M | 0.5% |
| 60 | HQYHEALTHEQUITY INC | 1.8M | $160.2M | 0.5% |
| 61 | IDXXIDEXX LABS INC | 298,154 | $157.0M | 0.5% |
| 62 | NOWSERVICENOW INC | 1.6M | $154.0M | 0.5% |
| 63 | SYNASYNAPTICS INC | 1.2M | $154.0M | 0.5% |
| 64 | TXNTEXAS INSTRS INC | 506,229 | $150.9M | 0.5% |
| 65 | SHARKNINJA INC | 986,806 | $150.3M | 0.5% |
| 66 | WSTWEST PHARMACEUTICAL SVSC INC | 417,309 | $149.8M | 0.5% |
| 67 | LOPEGRAND CANYON ED INC | 1.0M | $148.7M | 0.4% |
| 68 | LFUSLITTELFUSE INC | 321,681 | $146.5M | 0.4% |
| 69 | CNQCANADIAN NAT RES LTD MED TER | 3.6M | $143.7M | 0.4% |
| 70 | RSRELIANCE INC | 382,494 | $142.9M | 0.4% |
| 71 | TOTALENERGIES SE | 1.8M | $141.4M | 0.4% |
| 72 | FPSFORGENT POWER SOLUTIONS INC | 2.5M | $140.6M | 0.4% |
| 73 | PTCTPTC THERAPEUTICS INC | 1.7M | $140.5M | 0.4% |
| 74 | TKRTIMKEN CO | 954,839 | $138.8M | 0.4% |
| 75 | CYTKCYTOKINETICS INC | 1.6M | $136.6M | 0.4% |
| 76 | LECOLINCOLN ELEC HLDGS INC | 506,862 | $134.6M | 0.4% |
| 77 | EXPEAGLE MATLS INC | 576,712 | $129.8M | 0.4% |
| 78 | CLHCLEAN HARBORS INC | 419,210 | $125.2M | 0.4% |
| 79 | NOVTNOVANTA INC | 765,867 | $124.3M | 0.4% |
| 80 | BIRKENSTOCK HOLDING PLC | 2.9M | $123.3M | 0.4% |
| 81 | FHNFIRST HORIZON CORPORATION | 4.8M | $123.3M | 0.4% |
| 82 | ETSYETSY INC | 1.6M | $120.4M | 0.4% |
| 83 | MILLICOM INTL CELLULAR S A | 1.3M | $118.9M | 0.4% |
| 84 | DBDDIEBOLD NIXDORF INC | 1.4M | $117.3M | 0.4% |
| 85 | GTXGARRETT MOTION INC | 3.2M | $117.1M | 0.4% |
| 86 | EHCENCOMPASS HEALTH CORP | 1.2M | $116.4M | 0.3% |
| 87 | APPFAPPFOLIO INC | 721,826 | $115.7M | 0.3% |
| 88 | MARMARRIOTT INTL INC NEW | 300,872 | $111.5M | 0.3% |
| 89 | NBHCNATIONAL BK HLDGS CORP | 2.5M | $111.0M | 0.3% |
| 90 | CMGCHIPOTLE MEXICAN GRILL INC | 3.2M | $110.0M | 0.3% |
| 91 | SAIASAIA INC | 259,020 | $109.1M | 0.3% |
| 92 | RGENREPLIGEN CORP | 788,571 | $107.6M | 0.3% |
| 93 | FRPTFRESHPET INC | 1.8M | $107.1M | 0.3% |
| 94 | JAZZ PHARMACEUTICALS PLC | 436,893 | $105.3M | 0.3% |
| 95 | MLMMARTIN MARIETTA MATLS INC | 181,902 | $104.9M | 0.3% |
| 96 | KNXKNIGHT-SWIFT TRANSN HLDGS IN | 1.3M | $103.6M | 0.3% |
| 97 | WEATHERFORD INTL PLC | 1.3M | $102.8M | 0.3% |
| 98 | GMEDGLOBUS MED INC | 1.3M | $101.5M | 0.3% |
| 99 | NU HLDGS LTD | 7.6M | $101.5M | 0.3% |
| 100 | HBMHUDBAY MINERALS INC | 4.2M | $99.5M | 0.3% |
Source: SEC Form 13F-HR, reporting period 2026-06-30. Values are the manager's filed June-30-style quarter-end marks, not live prices. Research, not investment advice.