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BLAIR WILLIAM & CO/IL
Period ended Sep 30, 2026 · Latest filing Nov 10, 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: $38,593,108,515
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
- APPLE INC · COM · 037833100 · shares: $1,898,743,382
- MICROSOFT CORP · COM · 594918104 · shares: $1,747,127,216
- AMAZON COM INC · COM · 023135106 · shares: $1,427,683,418
- NVIDIA CORPORATION · COM · 67066G104 · shares: $1,234,730,872
- ALPHABET INC · CAP STK CL C · 02079K107 · shares: $988,733,208
- ALPHABET INC · CAP STK CL A · 02079K305 · shares: $808,469,516
- JPMORGAN CHASE & CO · COM · 46625H100 · shares: $750,171,457
- VISA INC · COM CL A · 92826C839 · shares: $649,718,726
- STATE STR SPDR S&P 500 ETF T · TR UNIT · 78462F103 · shares: $642,931,154
- GE VERNOVA INC · COM · 36828A101 · shares: $610,369,547
Reported holdings
2,029 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| APPLE INC | COM | 037833100 | — | 5,695,218 shares | $1,896,621,379 |
| MICROSOFT CORP | COM | 594918104 | — | 3,402,884 shares | $1,745,339,247 |
| AMAZON COM INC | COM | 023135106 | — | 5,727,564 shares | $1,427,022,672 |
| NVIDIA CORPORATION | COM | 67066G104 | — | 5,388,555 shares | $1,230,638,302 |
| ALPHABET INC | CAP STK CL C | 02079K107 | — | 2,901,723 shares | $988,733,208 |
| ALPHABET INC | CAP STK CL A | 02079K305 | — | 2,342,211 shares | $805,907,840 |
| JPMORGAN CHASE & CO | COM | 46625H100 | — | 2,267,544 shares | $750,171,457 |
| VISA INC | COM CL A | 92826C839 | — | 1,808,139 shares | $649,718,726 |
| STATE STR SPDR S&P 500 ETF T | TR UNIT | 78462F103 | — | 843,045 shares | $642,931,154 |
| GE VERNOVA INC | COM | 36828A101 | — | 642,163 shares | $610,369,547 |
| COSTCO WHOLESALE CORPORATION | COM | 22160K105 | — | 510,145 shares | $464,405,051 |
| MASTERCARD INCORPORATED | CL A | 57636Q104 | — | 814,068 shares | $448,933,947 |
| PALO ALTO NETWORKS INC | COM | 697435105 | — | 1,120,979 shares | $445,376,337 |
| IDEXX LABS INC | COM | 45168D104 | — | 846,671 shares | $442,123,299 |
| INVESCO EXCHANGE TRADED FD T | S&P500 EQL WGT | 46137V357 | — | 2,121,381 shares | $441,289,690 |
| ELI LILLY & CO | COM | 532457108 | — | 362,756 shares | $419,737,332 |
| AMPHENOL CORP | CL A | 032095101 | — | 4,873,870 shares | $410,867,247 |
| META PLATFORMS INC | CL A | 30303M102 | — | 556,518 shares | $403,575,860 |
| EVERPURE INC | CL A | 74624M102 | — | 3,079,560 shares | $402,744,827 |
| VANGUARD INTL EQUITY INDEX F | ALLWRLD EX US | 922042775 | — | 4,537,226 shares | $376,453,681 |
| ISHARES TR | CORE S&P500 ETF | 464287200 | — | 480,886 shares | $368,286,546 |
| FASTENAL CO | COM | 311900104 | — | 7,337,704 shares | $363,436,467 |
| BROADCOM INC | COM | 11135F101 | — | 1,001,402 shares | $351,682,395 |
| ARISTA NETWORKS INC | COM SHS | 040413205 | — | 1,658,025 shares | $337,557,238 |
| ABBVIE INC | COM | 00287Y109 | — | 1,276,464 shares | $333,910,162 |
| MICRON TECHNOLOGY INC | COM | 595112103 | — | 313,215 shares | $333,608,712 |
| VANGUARD INDEX FDS | S&P 500 ETF SHS | 922908363 | — | 455,353 shares | $319,138,433 |
| VANGUARD TAX-MANAGED FDS | VAN FTSE DEV MKT | 921943858 | — | 4,280,355 shares | $302,235,864 |
| SERVICENOW INC | COM | 81762P102 | — | 2,168,426 shares | $290,590,784 |
| INVESCO QQQ TR | UNIT SER 1 | 46090E103 | — | 385,296 shares | $285,030,083 |
| VANGUARD INDEX FDS | MRNGSTR VAL ETF | 922908744 | — | 1,268,524 shares | $274,102,614 |
| CROWDSTRIKE HLDGS INC | CL A | 22788C105 | — | 1,005,592 shares | $266,230,437 |
| JOHNSON & JOHNSON | COM | 478160104 | — | 957,624 shares | $253,521,305 |
| VANGUARD INDEX FDS | MRNGSTR TTL STK | 922908769 | — | 656,240 shares | $245,591,426 |
| WALMART INC | COM | 931142103 | — | 2,295,639 shares | $238,562,797 |
| BERKSHIRE HATHAWAY INC DEL | CL B NEW | 084670702 | — | 478,690 shares | $238,363,454 |
| ECOLAB INC | COM | 278865100 | — | 843,745 shares | $231,675,449 |
| AMERICAN EXPRESS CO | COM | 025816109 | — | 676,381 shares | $205,687,484 |
| VEEVA SYS INC | CL A COM | 922475108 | — | 717,633 shares | $204,848,267 |
| ISHARES TR | RUSSELL 2000 ETF | 464287655 | — | 730,667 shares | $203,044,939 |
| CINTAS CORP | COM | 172908105 | — | 1,040,479 shares | $202,955,805 |
| DANAHER CORP DEL | COM | 235851102 | — | 901,012 shares | $199,619,134 |
| PROGRESSIVE CORP | COM | 743315103 | — | 946,776 shares | $196,276,034 |
| HOME DEPOT INC | COM | 437076102 | — | 683,829 shares | $194,542,585 |
| BWX TECHNOLOGIES INC | COM | 05605H100 | — | 1,397,502 shares | $191,457,816 |
| STRYKER CORPORATION | COM | 863667101 | — | 640,269 shares | $176,323,576 |
| TRANSDIGM GROUP INC | COM | 893641100 | — | 157,259 shares | $170,248,961 |
| VANGUARD SPECIALIZED FUNDS | DIV APP ETF | 921908844 | — | 722,836 shares | $168,644,804 |
| INTUITIVE SURGICAL INC | COM NEW | 46120E602 | — | 408,196 shares | $165,984,917 |
| INTERCONTINENTAL EXCHANGE IN | COM | 45866F104 | — | 1,087,243 shares | $165,293,528 |
| UBER TECHNOLOGIES INC | COM | 90353T100 | — | 2,288,508 shares | $156,785,653 |
| CHEVRON CORPORATION | COM | 166764100 | — | 733,315 shares | $149,750,169 |
| EXXONMOBIL HOLDINGS CORP | COM SHS | 30233Q108 | — | 907,513 shares | $147,697,772 |
| ADVANCED MICRO DEVICES INC | COM | 007903107 | — | 237,391 shares | $145,226,318 |
| BOEING CO | COM | 097023105 | — | 758,899 shares | $141,193,217 |
| QUANTA SVCS INC | COM | 74762E102 | — | 219,364 shares | $140,943,654 |
| MARVELL TECHNOLOGY INC | COM | 573874104 | — | 529,393 shares | $139,870,812 |
| VANGUARD INDEX FDS | MRNGSTR GRWT ETF | 922908736 | — | 1,546,307 shares | $139,337,765 |
| MERCK & CO INC | COM | 58933Y105 | — | 951,718 shares | $138,294,180 |
| DEXCOM INC | COM | 252131107 | — | 1,551,734 shares | $133,899,128 |
| WATSCO INC | COM | 942622200 | — | 438,016 shares | $132,582,987 |
| SPDR GOLD TR | GOLD SHS | 78463V107 | — | 347,859 shares | $132,478,646 |
| UNION PAC CORP | COM | 907818108 | — | 485,002 shares | $131,983,712 |
| GOLDMAN SACHS GROUP INC | COM | 38141G104 | — | 144,742 shares | $130,319,711 |
| ISHARES TR | CORE S&P US VLU | 464287663 | — | 1,177,625 shares | $129,868,530 |
| ISHARES TR | RUS 1000 GRW ETF | 464287614 | — | 975,751 shares | $122,222,587 |
| AAON INC | COM PAR $0.004 | 000360206 | — | 1,459,128 shares | $120,757,443 |
| ROCKWELL AUTOMATION INC | COM | 773903109 | — | 276,320 shares | $120,290,584 |
| CURTISS WRIGHT CORP | COM | 231561101 | — | 220,216 shares | $119,757,654 |
| PROCTER & GAMBLE CO | COM | 742718109 | — | 813,625 shares | $118,203,483 |
| FIRST TR EXCHANGE TRADED FD | RISNG DIVD ACHIV | 33738R506 | — | 1,473,135 shares | $115,331,717 |
| RBC BEARINGS INC | COM | 75524B104 | — | 226,976 shares | $113,313,228 |
| HEICO CORP NEW | COM | 422806109 | — | 368,593 shares | $111,750,119 |
| COCA COLA CO | COM | 191216100 | — | 1,278,050 shares | $110,014,514 |
| LINDE PLC | SHS | G54950103 | — | 227,202 shares | $107,841,418 |
| THERMO FISHER SCIENTIFIC INC | COM | 883556102 | — | 159,585 shares | $107,727,904 |
| DEERE & CO | COM | 244199105 | — | 157,503 shares | $105,771,163 |
| JONES LANG LASALLE INC | COM | 48020Q107 | — | 345,289 shares | $105,492,665 |
| ISHARES TR | CORE S&P US GWT | 464287671 | — | 538,415 shares | $104,317,930 |
| AMETEK INC | COM | 031100100 | — | 418,124 shares | $103,581,806 |
| TWILIO INC | CL A | 90138F102 | — | 347,108 shares | $101,515,315 |
| ISHARES TR | MSCI EAFE ETF | 464287465 | — | 976,087 shares | $101,405,696 |
| INTERNATIONAL BUSINESS MACHS | COM | 459200101 | — | 456,403 shares | $100,376,712 |
| LIVE NATION ENTERTAINMENT IN | COM | 538034109 | — | 591,491 shares | $100,139,441 |
| BLACKSTONE INC | COM | 09260D107 | — | 886,889 shares | $99,411,376 |
| CATERPILLAR INC | COM | 149123101 | — | 122,090 shares | $98,989,707 |
| GUIDEWIRE SOFTWARE INC | COM | 40171V100 | — | 684,843 shares | $97,644,915 |
| ABBOTT LABORATORIES | COM | 002824100 | — | 978,399 shares | $96,695,179 |
| HONEYWELL INTL INC | COM | 438516205 | — | 453,683 shares | $95,699,864 |
| ISHARES TR | CORE S&P TTL STK | 464287150 | — | 567,781 shares | $94,410,644 |
| CISCO SYS INC | COM | 17275R102 | — | 874,485 shares | $94,120,834 |
| TESLA INC | COM | 88160R101 | — | 255,971 shares | $90,820,897 |
| STARBUCKS CORP | COM | 855244109 | — | 956,434 shares | $89,866,527 |
| AXON ENTERPRISE INC | COM | 05464C101 | — | 210,865 shares | $89,094,665 |
| WASTE MGMT INC DEL | COM | 94106L109 | — | 431,538 shares | $87,999,248 |
| GENERAL DYNAMICS CORP | COM | 369550108 | — | 264,914 shares | $87,906,553 |
| ILLINOIS TOOL WKS INC | COM | 452308109 | — | 340,424 shares | $87,584,173 |
| AON PLC | SHS CL A | G0403H108 | — | 316,083 shares | $87,482,413 |
| TAIWAN SEMICONDUCTOR MANUFAC | SPONSORED ADS | 874039100 | — | 189,445 shares | $86,422,805 |
| OREILLY AUTOMOTIVE INC | COM | 67103H107 | — | 1,004,453 shares | $85,790,311 |