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WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Period ended Sep 30, 2026 · Latest filing Nov 6, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Sep 30, 2026: $30,826,149,452
More quarters will appear as history becomes available.
Top holdings
Top 10 at Sep 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- TAIWAN SEMICONDUCTOR MANUFAC · SPONSORED ADS · 874039100 · shares: $2,092,114,776
- NVIDIA CORPORATION · COM · 67066G104 · shares: $1,855,276,337
- ALPHABET INC · CAP STK CL A · 02079K305 · shares: $1,241,460,954
- APPLE INC · COM · 037833100 · shares: $1,006,662,062
- MICROSOFT CORP · COM · 594918104 · shares: $877,785,620
- BROADCOM INC · COM · 11135F101 · shares: $696,529,299
- META PLATFORMS INC · CL A · 30303M102 · shares: $585,058,590
- ADVANCED MICRO DEVICES INC · COM · 007903107 · shares: $479,128,597
- MASTERCARD INCORPORATED · CL A · 57636Q104 · shares: $390,246,345
- EVERPURE INC · CL A · 74624M102 · shares: $333,448,981
Reported holdings
399 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| BIRKENSTOCK HOLDING PLC | COM SHS | M2029K104 | — | 2,809,851 shares | $91,067,271 |
| ASTRAZENECA PLC | ORD | G0593M107 | — | 557,483 shares | $90,809,127 |
| MOBILITY GLOBAL INC | COM SHS | 60744M106 | — | 5,291,068 shares | $90,741,816 |
| NEXTPOWER INC | COM | 65290E101 | — | 1,147,561 shares | $89,429,429 |
| MILLICOM INTL CELLULAR S A | COM STK | L6388F110 | — | 1,003,441 shares | $87,439,849 |
| PROCORE TECHNOLOGIES INC | COM | 74275K108 | — | 1,679,500 shares | $86,863,740 |
| SPACE EXPLORATION TECHN CORP | CLASS A COM STK | 84615Q103 | — | 566,406 shares | $85,448,009 |
| SAIA INC | COM | 78709Y105 | — | 253,984 shares | $84,764,620 |
| VERISK ANALYTICS INC | COM | 92345Y106 | — | 495,873 shares | $83,232,283 |
| DIEBOLD NIXDORF INC | COM SHS | 253651202 | — | 1,314,379 shares | $80,466,282 |
| DPC HOLDINGS PLC | ORDINARY SHARES | G2R11M108 | — | 1,901,643 shares | $80,363,433 |
| CHIPOTLE MEXICAN GRILL INC | COM | 169656105 | — | 2,472,219 shares | $78,987,397 |
| VERICEL CORP | COM | 92346J108 | — | 1,961,248 shares | $78,724,495 |
| MAPLEBEAR INC | COM | 565394103 | — | 1,787,339 shares | $77,070,058 |
| CHURCHILL DOWNS INC | COM | 171484108 | — | 1,009,557 shares | $76,403,274 |
| KNIGHT-SWIFT TRANSN HLDGS IN | CL A | 499049104 | — | 1,197,815 shares | $76,169,056 |
| VISTA ENERGY S.A.B. DE C.V. | SPONSORED ADS | 92837L109 | — | 1,137,265 shares | $74,305,563 |
| OSI SYSTEMS INC | COM | 671044105 | — | 373,689 shares | $72,633,931 |
| INSMED INC | COM PAR $.01 | 457669307 | — | 619,049 shares | $70,658,253 |
| CASEYS GEN STORES INC | COM | 147528103 | — | 116,050 shares | $70,611,812 |
| SOMNIGROUP INTERNATIONAL INC | COM | 88023U101 | — | 1,127,624 shares | $70,036,727 |
| BANNER CORP | COM NEW | 06652V208 | — | 1,043,648 shares | $69,924,416 |
| CIRCLE INTERNET GROUP INC | COM CL A | 172573107 | — | 843,808 shares | $69,335,703 |
| NATIONAL VISION HLDGS INC | COM | 63845R107 | — | 4,135,752 shares | $67,743,618 |
| FLOWSERVE CORP | COM | 34354P105 | — | 916,827 shares | $67,038,390 |
| SOUTHERN COPPER CORP | COM | 84265V105 | — | 324,052 shares | $65,665,897 |
| QUAKER HOUGHTON | COM | 747316107 | — | 413,743 shares | $65,272,093 |
| TWILIO INC | CL A | 90138F102 | — | 215,683 shares | $63,078,650 |
| STRIDE INC | COM | 86333M108 | — | 807,907 shares | $63,000,588 |
| API GROUP CORP | COM STK | 00187Y100 | — | 1,615,628 shares | $62,363,241 |
| PERELLA WEINBERG PARTNERS | CLASS A COM | 71367G102 | — | 3,804,547 shares | $62,052,162 |
| TEREX CORP NEW | COM | 880779103 | — | 1,178,550 shares | $61,991,740 |
| MAREX GROUP LTD | ORD | G5T40M104 | — | 871,153 shares | $60,771,633 |
| EVERCORE INC | CLASS A | 29977A105 | — | 232,740 shares | $59,930,602 |
| CAVA GROUP INC | COM | 148929102 | — | 1,105,836 shares | $59,825,728 |
| KARMAN HLDGS INC | COMMON STOCK | 485924104 | — | 1,832,222 shares | $59,400,637 |
| GRUPO CIBEST SA | SPON ADS | 40090E106 | — | 618,837 shares | $57,449,104 |
| U S PHYSICAL THERAPY | COM | 90337L108 | — | 659,509 shares | $56,539,707 |
| ACADEMY SPORTS & OUTDOORS IN | COM | 00402L107 | — | 1,173,106 shares | $56,414,668 |
| APPLIED OPTOELECTRONICS INC | COM | 03823U102 | — | 566,908 shares | $56,271,288 |
| PETROLEO BRASILEIRO S A | SPONSORED ADR | 71654V408 | — | 2,657,692 shares | $55,457,635 |
| BALCHEM CORP | COM | 057665200 | — | 310,446 shares | $51,211,172 |
| ALIGNMENT HEALTHCARE INC | COM | 01625V104 | — | 6,249,117 shares | $50,992,795 |
| REVOLVE GROUP INC | CL A | 76156B107 | — | 2,299,857 shares | $49,055,950 |
| JBT MAREL CORPORATION | COM | 477839104 | — | 457,829 shares | $48,342,164 |
| LAUREATE ED INC | COMMON STOCK | 518613203 | — | 1,216,438 shares | $46,419,274 |
| COCA-COLA EUROPACIFIC PARTNE | SHS | G25839104 | — | 450,513 shares | $45,821,677 |
| Q2 HLDGS INC | COM | 74736L109 | — | 821,135 shares | $45,523,724 |
| GUIDEWIRE SOFTWARE INC | COM | 40171V100 | — | 316,279 shares | $45,095,060 |
| INSPIRE MED SYS INC | COM | 457730109 | — | 639,584 shares | $44,361,546 |
| RAMBUS INC DEL | COM | 750917106 | — | 412,878 shares | $44,078,855 |
| ESTABLISHMENT LABS HLDGS INC | COM | G31249108 | — | 668,313 shares | $42,885,645 |
| RYANAIR HOLDINGS PLC | SPONSORED ADR | 783513203 | — | 777,636 shares | $42,775,571 |
| SHOPIFY INC | CL A SUB VTG SHS | 82509L107 | — | 287,043 shares | $42,568,477 |
| CANADIAN PACIFIC KANSAS CITY | COM | 13646K108 | — | 499,627 shares | $42,518,258 |
| IMPINJ INC | COM | 453204109 | — | 236,706 shares | $42,439,019 |
| COLLIERS INTL GROUP INC | SUB VTG SHS | 194693107 | — | 464,391 shares | $41,702,312 |
| AGILYSYS INC | COM | 00847J105 | — | 427,638 shares | $41,515,097 |
| PALO ALTO NETWORKS INC | COM | 697435105 | — | 103,853 shares | $41,261,835 |
| COGNEX CORP | COM | 192422103 | — | 679,386 shares | $41,204,761 |
| JEFFERSON CAPITAL INC | COM | 47248R103 | — | 2,096,691 shares | $40,004,864 |
| PAGAYA TECHNOLOGIES LTD | CL A NEW | M7S64L123 | — | 2,297,228 shares | $39,787,989 |
| FIRSTSERVICE CORP NEW | COM | 33767E202 | — | 306,976 shares | $39,256,091 |
| ATLANTIC UN BANKSHARES CORP | COM | 04911A107 | — | 1,002,720 shares | $38,053,224 |
| LIGAND PHARMACEUTICALS INC | COM NEW | 53220K504 | — | 119,296 shares | $37,264,492 |
| OLD NATL BANCORP IND | COM | 680033107 | — | 1,397,781 shares | $34,441,324 |
| BOBS DISC FURNITURE INC | COM SHS | 09681N106 | — | 2,392,830 shares | $33,164,624 |
| ESAB CORPORATION | COM | 29605J106 | — | 497,830 shares | $32,797,040 |
| AMERICOLD REALTY TRUST INC | COM | 03064D108 | — | 2,331,863 shares | $32,599,445 |
| MODINE MFG CO | COM | 607828100 | — | 173,772 shares | $32,530,118 |
| PRICESMART INC | COM | 741511109 | — | 190,086 shares | $32,145,443 |
| COPART INC | COM | 217204106 | — | 1,162,650 shares | $31,717,092 |
| MERCURY SYS INC | COM | 589378108 | — | 375,351 shares | $31,154,133 |
| FABRINET | SHS | G3323L100 | — | 73,128 shares | $31,026,017 |
| DONNELLEY FINL SOLUTIONS INC | COM | 25787G100 | — | 624,632 shares | $29,476,384 |
| HAEMONETICS CORP MASS | COM | 405024100 | — | 271,482 shares | $28,587,055 |
| IDACORP INC | COM | 451107106 | — | 208,739 shares | $27,288,449 |
| PALVELLA THERAPEUTICS INC NE | COM | 697947109 | — | 195,070 shares | $26,906,005 |
| APPLIED INDL TECHNOLOGIES IN | COM | 03820C105 | — | 80,598 shares | $26,781,909 |
| CHAMPION HOMES INC | COM | 830830105 | — | 305,137 shares | $26,150,241 |
| REXFORD INDL RLTY INC | COM | 76169C100 | — | 710,581 shares | $25,772,773 |
| SYLVAMO CORP | COMMON STOCK | 871332102 | — | 776,124 shares | $25,363,727 |
| CEVA INC | COM | 157210105 | — | 706,899 shares | $24,974,742 |
| ELI LILLY & CO | COM | 532457108 | — | 21,288 shares | $24,631,919 |
| MADDEN STEVEN LTD | COM | 556269108 | — | 544,434 shares | $24,374,310 |
| GRAHAM CORP | COM | 384556106 | — | 278,236 shares | $24,014,549 |
| BKV CORP | COM | 05603J108 | — | 1,124,317 shares | $23,992,925 |
| HAWKINS INC | COM | 420261109 | — | 189,291 shares | $23,850,666 |
| URANIUM ENERGY CORP | COM | 916896103 | — | 2,522,159 shares | $23,834,403 |
| LATAM AIRLINES GROUP SA | SPONSORED ADR | 51817R205 | — | 472,733 shares | $23,579,191 |
| AVERY DENNISON CORP | COM | 053611109 | — | 137,535 shares | $23,473,098 |
| RUSH STREET INTERACTIVE INC | COM | 782011100 | — | 1,142,885 shares | $23,234,852 |
| PRIMORIS SVCS CORP | COM | 74164F103 | — | 307,915 shares | $22,945,838 |
| EAST WEST BANCORP INC | COM | 27579R104 | — | 184,861 shares | $22,909,824 |
| ICU MED INC | COM | 44930G107 | — | 140,909 shares | $22,617,304 |
| NORTHWESTERN ENERGY GROUP IN | COM NEW | 668074305 | — | 325,190 shares | $22,236,492 |
| MIRION TECHNOLOGIES INC | COM CL A | 60471A101 | — | 1,572,490 shares | $22,203,559 |
| WYNDHAM HOTELS & RESORTS INC | COM | 98311A105 | — | 307,246 shares | $22,072,553 |
| HURON CONSULTING GROUP INC | COM | 447462102 | — | 139,163 shares | $21,824,933 |
| PENGUIN SOLUTIONS INC | COM | 706915105 | — | 390,674 shares | $21,365,961 |