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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) |
|---|---|---|---|---|---|
| CASELLA WASTE SYS INC | CL A | 147448104 | — | 262,656 shares | $21,104,410 |
| M/I HOMES INC | COM | 55305B101 | — | 155,685 shares | $21,037,714 |
| VALVOLINE INC | COM | 92047W101 | — | 687,026 shares | $20,706,964 |
| SPIRE INC | COM | 84857L101 | — | 271,842 shares | $20,684,458 |
| MOTOROLA SOLUTIONS INC | COM NEW | 620076307 | — | 45,608 shares | $20,339,884 |
| HANCOCK WHITNEY CORPORATION | COM | 410120109 | — | 282,295 shares | $20,336,532 |
| FIRST MERCHANTS CORP | COM | 320817109 | — | 507,837 shares | $20,201,756 |
| ERO COPPER CORP | COM | 296006109 | — | 550,048 shares | $20,181,261 |
| RENASANT CORP | COM | 75970E107 | — | 518,514 shares | $20,159,824 |
| EASTERN BANKSHARES INC | COM | 27627N105 | — | 960,774 shares | $20,109,000 |
| SELECTIVE INS GROUP INC | COM | 816300107 | — | 239,117 shares | $19,990,181 |
| SEACOAST BKG CORP FLA | COM NEW | 811707801 | — | 620,883 shares | $19,762,706 |
| ADDUS HOMECARE CORP | COM | 006739106 | — | 170,705 shares | $18,869,731 |
| MATSON INC | COM | 57686G105 | — | 84,728 shares | $18,609,658 |
| TREX INC | COM | 89531P105 | — | 418,462 shares | $18,228,205 |
| WATERBRIDGE INFRASTRUCTURE L | CL A SHS REPSTG | 940923105 | — | 642,035 shares | $18,054,024 |
| HANOVER INS GROUP INC | COM | 410867105 | — | 83,855 shares | $17,955,033 |
| ANI PHARMACEUTICALS INC | COM | 00182C103 | — | 246,345 shares | $17,896,964 |
| HAYWARD HLDGS INC | COM | 421298100 | — | 1,458,772 shares | $17,855,369 |
| NORTHWEST NAT HLDG CO | COM | 66765N105 | — | 382,342 shares | $17,843,901 |
| ABM INDS INC | COM | 000957100 | — | 368,760 shares | $17,737,356 |
| INNOVIVA INC | COM | 45781M101 | — | 832,881 shares | $17,665,406 |
| MCGRATH RENTCORP | COM | 580589109 | — | 154,483 shares | $17,665,131 |
| BANC OF CALIFORNIA INC | COM | 05990K106 | — | 1,018,400 shares | $17,547,032 |
| FOUR CORNERS PPTY TR INC | COM | 35086T109 | — | 802,931 shares | $17,471,779 |
| CARETRUST REIT INC | COM | 14174T107 | — | 464,753 shares | $17,000,665 |
| CABOT CORP | COM | 127055101 | — | 220,897 shares | $16,989,188 |
| AVNET INC | COM | 053807103 | — | 169,512 shares | $16,942,724 |
| MESA LABS INC | COM | 59064R109 | — | 130,323 shares | $16,934,171 |
| PBF ENERGY INC | CL A | 69318G106 | — | 219,082 shares | $16,860,551 |
| LIVE OAK BANCSHARES INC | COM | 53803X105 | — | 464,303 shares | $16,803,126 |
| GRANITE CONSTR INC | COM | 387328107 | — | 144,491 shares | $16,747,952 |
| PAYMENTUS HOLDINGS INC | COM CL A | 70439P108 | — | 545,623 shares | $16,717,889 |
| ESSENT GROUP LTD | COM | G3198U102 | — | 287,747 shares | $16,663,429 |
| CATHAY GEN BANCORP | COM | 149150104 | — | 279,342 shares | $16,620,849 |
| DNOW INC | COM | 67011P100 | — | 1,071,761 shares | $16,612,296 |
| SABRA HEALTH CARE REIT INC | COM | 78573L106 | — | 839,007 shares | $16,545,218 |
| AMERIS BANCORP | COM | 03076K108 | — | 207,578 shares | $16,506,603 |
| ALBANY INTL CORP | CL A | 012348108 | — | 276,375 shares | $16,474,714 |
| YETI HLDGS INC | COM | 98585X104 | — | 401,442 shares | $16,467,151 |
| KITE REALTY GROUP TRUST | COM NEW | 49803T300 | — | 667,982 shares | $16,292,081 |
| VERTEX PHARMACEUTICALS INC | COM | 92532F100 | — | 31,087 shares | $16,252,594 |
| PROGYNY INC | COM | 74340E103 | — | 645,130 shares | $16,250,825 |
| EURONET WORLDWIDE INC | COM | 298736109 | — | 258,117 shares | $16,227,816 |
| HUB GROUP INC | CL A | 443320106 | — | 546,140 shares | $16,154,821 |
| KIRBY CORP | COM | 497266106 | — | 122,070 shares | $16,021,688 |
| WILEY JOHN & SONS INC | CL A | 968223206 | — | 332,604 shares | $15,885,167 |
| BELDEN INC | COM | 077454106 | — | 146,549 shares | $15,817,034 |
| CENTURI HOLDINGS INC | COM SHS | 155923105 | — | 786,079 shares | $15,753,023 |
| BBB FOODS INC | CL A COM | G0896C103 | — | 298,592 shares | $15,717,883 |
| ACADIAN ASSET MANAGEMENT INC | COM | 10948W103 | — | 169,521 shares | $15,546,771 |
| MARVELL TECHNOLOGY INC | COM | 573874104 | — | 58,691 shares | $15,506,749 |
| STANDARDAERO INC | COM | 85423L103 | — | 723,435 shares | $15,445,337 |
| FIRST BANCORP N C | COM | 318910106 | — | 252,457 shares | $15,427,647 |
| VALLEY NATL BANCORP | COM | 919794107 | — | 1,219,235 shares | $15,386,746 |
| TEXAS CAP BANCSHARES INC | COM | 88224Q107 | — | 164,333 shares | $15,286,256 |
| FB FINL CORP | COM | 30257X104 | — | 295,164 shares | $15,259,979 |
| EXPRO LTD | ORD SHS | G3314M109 | — | 966,510 shares | $15,241,863 |
| DEXCOM INC | COM | 252131107 | — | 176,575 shares | $15,236,657 |
| KEYSIGHT TECHNOLOGIES INC | COM | 49338L103 | — | 40,551 shares | $14,762,186 |
| SM ENERGY COMPANY | COM | 78454L100 | — | 436,539 shares | $14,746,287 |
| INTERCORP FINL SVCS INC | SHS | P5626F128 | — | 267,877 shares | $14,569,830 |
| ATMUS FILTRATION TECHNOLOGIE | COM | 04956D107 | — | 332,011 shares | $14,415,918 |
| UL SOLUTIONS INC | CLASS A COM SHS | 903731107 | — | 219,017 shares | $14,371,896 |
| MATADOR RES CO | COM | 576485205 | — | 272,369 shares | $14,048,793 |
| TECNOGLASS HOLDINGS INC | COM SHS | 87877F103 | — | 393,975 shares | $13,993,992 |
| LANTHEUS HLDGS INC | COM | 516544103 | — | 139,075 shares | $13,842,135 |
| HEALTHCARE RLTY TR | CL A COM | 42226K105 | — | 778,528 shares | $13,811,087 |
| AGREE RLTY CORP | COM | 008492100 | — | 204,354 shares | $13,652,891 |
| BRADY CORP | CL A | 104674106 | — | 163,297 shares | $13,633,667 |
| NATIONAL HEALTHCARE PPTYS IN | COM CLASS A | 42226B501 | — | 846,177 shares | $13,572,679 |
| XPEL INC | COM | 98379L100 | — | 303,020 shares | $13,384,393 |
| SUNSTONE HOTEL INVS INC NEW | COM | 867892101 | — | 1,193,396 shares | $13,377,969 |
| LA Z BOY INC | COM | 505336107 | — | 443,370 shares | $13,141,487 |
| KNOWLES CORP | COM | 49926D109 | — | 334,590 shares | $12,430,019 |
| ONESPAWORLD HOLDINGS LIMITED | COM | P73684113 | — | 550,570 shares | $12,382,319 |
| GULFPORT ENERGY CORP | COMMON SHARES | 402635502 | — | 82,016 shares | $12,341,768 |
| SKYWEST INC | COM | 830879102 | — | 126,082 shares | $12,219,867 |
| WINGSTOP INC | COM | 974155103 | — | 115,714 shares | $12,192,835 |
| EQUITY LIFESTYLE PROPERTIES | COM | 29472R108 | — | 208,302 shares | $12,150,256 |
| NETSTREIT CORP | COM | 64119V303 | — | 682,550 shares | $12,067,484 |
| MERCADOLIBRE INC | COM | 58733R102 | — | 6,952 shares | $12,016,741 |
| EDGEWELL PERSONAL CARE CO | COM | 28035Q102 | — | 441,370 shares | $11,908,163 |
| CARGURUS INC | COM CL A | 141788109 | — | 381,155 shares | $11,876,790 |
| BRIGHT HORIZONS FAM SOL IN D | COM | 109194100 | — | 185,448 shares | $11,816,747 |
| HUMANA INC | COM | 444859102 | — | 30,854 shares | $11,772,961 |
| VERSIGENT PLC | ORDINARY SHARES | G9600F104 | — | 261,473 shares | $11,750,597 |
| PATTERSON-UTI ENERGY INC | COM | 703481101 | — | 1,055,276 shares | $11,523,614 |
| ARGAN INC | COM | 04010E109 | — | 30,284 shares | $11,445,838 |
| OWENS CORNING NEW | COM | 690742101 | — | 97,603 shares | $11,394,174 |
| POWER INTEGRATIONS INC | COM | 739276103 | — | 208,812 shares | $10,816,462 |
| IAMGOLD CORP | COM | 450913108 | — | 582,655 shares | $10,726,679 |
| RUSH ENTERPRISES INC | CL A | 781846209 | — | 232,105 shares | $10,632,730 |
| ARIS MINING CORPORATION | COM | 04040Y109 | — | 599,979 shares | $10,443,312 |
| ANTERO RESOURCES CORP | COM | 03674X106 | — | 301,575 shares | $10,069,589 |
| ALASKA AIR GROUP INC | COM | 011659109 | — | 259,638 shares | $10,047,991 |
| EPLUS INC | COM | 294268107 | — | 103,082 shares | $9,278,411 |
| CELESTICA INC | COM | 15101Q207 | — | 24,744 shares | $8,943,224 |
| MALIBU BOATS INC | COM CL A | 56117J100 | — | 388,428 shares | $8,902,770 |
| WOODWARD INC | COM | 980745103 | — | 26,862 shares | $8,826,585 |