# BLAIR WILLIAM & CO/IL

> Institutional holdings reported to the SEC as of Q2 2026 on Form 13F. CIK 902367. Source: https://holderbook.com/funds/902367-blair-william-co-il/

- Reported value: $38.4B
- Positions: 1,998
- Weight of the ten largest: 26.3%
- Filed: 2026-08-11

A 13F reports long US equity positions only. Short positions, bonds, foreign listings, private holdings and cash are not visible, so this is not the manager's whole book.

## Holdings

| Security | Ticker | Value | Shares | Weight | Quarters held |
|---|---|---|---|---|---|
| APPLE INC | [AAPL](https://holderbook.com/stocks/AAPL/) | $1.7B | 5,731,525 | 4.3% | 31 |
| AMAZON COM INC | [AMZN](https://holderbook.com/stocks/AMZN/) | $1.4B | 5,875,124 | 3.6% | 31 |
| MICROSOFT CORP | [MSFT](https://holderbook.com/stocks/MSFT/) | $1.3B | 3,442,574 | 3.3% | 31 |
| NVIDIA CORPORATION | [NVDA](https://holderbook.com/stocks/NVDA/) | $1.1B | 5,374,424 | 2.8% | 31 |
| ALPHABET INC | [GOOG](https://holderbook.com/stocks/GOOG/) | $1.0B | 2,953,724 | 2.7% | 31 |
| ALPHABET INC | [GOOGL](https://holderbook.com/stocks/GOOGL/) | $858.6M | 2,402,621 | 2.2% | 31 |
| GE VERNOVA INC | [GEV](https://holderbook.com/stocks/GEV/) | $775.0M | 659,673 | 2.0% | 9 |
| JPMORGAN CHASE & CO | [JPM](https://holderbook.com/stocks/JPM/) | $743.2M | 2,270,360 | 1.9% | 31 |
| STATE STR SPDR S&P 500 ETF T | [SPY](https://holderbook.com/stocks/SPY/) | $633.3M | 848,034 | 1.6% | 31 |
| VISA INC | [V](https://holderbook.com/stocks/V/) | $631.8M | 1,841,604 | 1.6% | 31 |
| COSTCO WHOLESALE CORPORATION | [COST](https://holderbook.com/stocks/COST/) | $490.8M | 524,692 | 1.3% | 31 |
| IDEXX LABS INC | [IDXX](https://holderbook.com/stocks/IDXX/) | $483.6M | 918,556 | 1.3% | 31 |
| AMPHENOL CORP | [APH](https://holderbook.com/stocks/APH/) | $441.6M | 2,504,409 | 1.2% | 31 |
| MASTERCARD INCORPORATED | [MA](https://holderbook.com/stocks/MA/) | $432.6M | 842,350 | 1.1% | 31 |
| INVESCO EXCHANGE TRADED FD T | [RSP](https://holderbook.com/stocks/RSP/) | $421.8M | 1,982,392 | 1.1% | 31 |
| PALO ALTO NETWORKS INC | [PANW](https://holderbook.com/stocks/PANW/) | $418.3M | 1,226,519 | 1.1% | 31 |
| ELI LILLY & CO | [LLY](https://holderbook.com/stocks/LLY/) | $416.3M | 347,098 | 1.1% | 31 |
| META PLATFORMS INC | [META](https://holderbook.com/stocks/META/) | $377.9M | 670,881 | 1.0% | 31 |
| VANGUARD INTL EQUITY INDEX F | [VEU](https://holderbook.com/stocks/VEU/) | $375.1M | 4,479,218 | 1.0% | 31 |
| MICRON TECHNOLOGY INC | [MU](https://holderbook.com/stocks/MU/) | $364.6M | 315,878 | 0.9% | 31 |
| ISHARES TR | [IVV](https://holderbook.com/stocks/IVV/) | $363.0M | 484,704 | 0.9% | 31 |
| FASTENAL CO | [FAST](https://holderbook.com/stocks/FAST/) | $355.8M | 7,407,059 | 0.9% | 31 |
| BROADCOM INC | [AVGO](https://holderbook.com/stocks/AVGO/) | $351.2M | 929,716 | 0.9% | 31 |
| ABBVIE INC | [ABBV](https://holderbook.com/stocks/ABBV/) | $324.1M | 1,287,857 | 0.8% | 31 |
| VANGUARD TAX-MANAGED FDS | [VEA](https://holderbook.com/stocks/VEA/) | $305.7M | 4,291,023 | 0.8% | 31 |
| BWX TECHNOLOGIES INC | [BWXT](https://holderbook.com/stocks/BWXT/) | $303.0M | 1,556,417 | 0.8% | 31 |
| VANGUARD INDEX FDS | [VOO](https://holderbook.com/stocks/VOO/) | $288.0M | 419,372 | 0.8% | 31 |
| ARISTA NETWORKS INC | [ANET](https://holderbook.com/stocks/ANET/) | $272.6M | 1,604,716 | 0.7% | 7 |
| VANGUARD INDEX FDS | [VTV](https://holderbook.com/stocks/VTV/) | $268.6M | 1,232,497 | 0.7% | 31 |
| INVESCO QQQ TR | [QQQ](https://holderbook.com/stocks/QQQ/) | $264.5M | 359,219 | 0.7% | 31 |
| WALMART INC | [WMT](https://holderbook.com/stocks/WMT/) | $257.2M | 2,270,879 | 0.7% | 31 |
| HOME DEPOT INC | [HD](https://holderbook.com/stocks/HD/) | $246.0M | 697,590 | 0.6% | 31 |
| JOHNSON & JOHNSON | [JNJ](https://holderbook.com/stocks/JNJ/) | $242.9M | 956,262 | 0.6% | 31 |
| BERKSHIRE HATHAWAY INC DEL | [BRKB](https://holderbook.com/stocks/BRKB/) | $242.0M | 483,586 | 0.6% | 31 |
| EVERPURE INC | [P](https://holderbook.com/stocks/P/) | $240.2M | 3,048,094 | 0.6% | 31 |
| ECOLAB INC | [ECL](https://holderbook.com/stocks/ECL/) | $238.0M | 854,294 | 0.6% | 31 |
| WATSCO INC | [WSO](https://holderbook.com/stocks/WSO/) | $235.0M | 564,024 | 0.6% | 31 |
| AMERICAN EXPRESS CO | [AXP](https://holderbook.com/stocks/AXP/) | $230.1M | 680,321 | 0.6% | 31 |
| PROGRESSIVE CORP | [PGR](https://holderbook.com/stocks/PGR/) | $225.9M | 1,034,104 | 0.6% | 27 |
| SERVICENOW INC | [NOW](https://holderbook.com/stocks/NOW/) | $222.4M | 2,240,030 | 0.6% | 31 |
| TRANSDIGM GROUP INC | [TDG](https://holderbook.com/stocks/TDG/) | $219.7M | 164,960 | 0.6% | 27 |
| STRYKER CORPORATION | [SYK](https://holderbook.com/stocks/SYK/) | $215.5M | 684,392 | 0.6% | 31 |
| ISHARES TR | [IWM](https://holderbook.com/stocks/IWM/) | $210.6M | 701,051 | 0.5% | 31 |
| CROWDSTRIKE HLDGS INC | [CRWD](https://holderbook.com/stocks/CRWD/) | $207.8M | 272,235 | 0.5% | 26 |
| UBER TECHNOLOGIES INC | [UBER](https://holderbook.com/stocks/UBER/) | $201.7M | 2,794,590 | 0.5% | 29 |
| VANGUARD INDEX FDS | [VTI](https://holderbook.com/stocks/VTI/) | $195.6M | 528,525 | 0.5% | 31 |
| AAON INC | [AAON](https://holderbook.com/stocks/AAON/) | $194.5M | 1,533,434 | 0.5% | 9 |
| BOEING CO | [BA](https://holderbook.com/stocks/BA/) | $190.1M | 878,396 | 0.5% | 31 |
| DANAHER CORP DEL | [DHR](https://holderbook.com/stocks/DHR/) | $185.0M | 971,095 | 0.5% | 31 |
| CINTAS CORP | [CTAS](https://holderbook.com/stocks/CTAS/) | $180.9M | 1,063,530 | 0.5% | 31 |
| VANGUARD SPECIALIZED FUNDS | [VIG](https://holderbook.com/stocks/VIG/) | $170.0M | 718,567 | 0.4% | 31 |
| QUANTA SVCS INC | [PWR](https://holderbook.com/stocks/PWR/) | $161.8M | 224,665 | 0.4% | 31 |
| INTUITIVE SURGICAL INC | [ISRG](https://holderbook.com/stocks/ISRG/) | $158.1M | 397,640 | 0.4% | 31 |
| MARVELL TECHNOLOGY INC | [MRVL](https://holderbook.com/stocks/MRVL/) | $158.0M | 530,549 | 0.4% | 21 |
| INTERCONTINENTAL EXCHANGE IN | [ICE](https://holderbook.com/stocks/ICE/) | $158.0M | 1,283,754 | 0.4% | 31 |
| GOLDMAN SACHS GROUP INC | [GS](https://holderbook.com/stocks/GS/) | $148.9M | 147,217 | 0.4% | 31 |
| CURTISS WRIGHT CORP | [CW](https://holderbook.com/stocks/CW/) | $140.6M | 185,609 | 0.4% | 18 |
| ROCKWELL AUTOMATION INC | [ROK](https://holderbook.com/stocks/ROK/) | $139.8M | 282,332 | 0.4% | 31 |
| RBC BEARINGS INC | [RBC](https://holderbook.com/stocks/RBC/) | $139.0M | 215,880 | 0.4% | 31 |
| INTERNATIONAL BUSINESS MACHS | [IBM](https://holderbook.com/stocks/IBM/) | $136.7M | 486,008 | 0.4% | 31 |
| ADVANCED MICRO DEVICES INC | [AMD](https://holderbook.com/stocks/AMD/) | $136.6M | 235,214 | 0.4% | 31 |
| SPDR GOLD TR | [GLD](https://holderbook.com/stocks/GLD/) | $133.6M | 362,632 | 0.3% | 31 |
| VEEVA SYS INC | [VEEV](https://holderbook.com/stocks/VEEV/) | $133.3M | 750,843 | 0.3% | 31 |
| UNION PAC CORP | [UNP](https://holderbook.com/stocks/UNP/) | $132.7M | 487,778 | 0.3% | 31 |
| VANGUARD INDEX FDS | [VUG](https://holderbook.com/stocks/VUG/) | $131.5M | 1,526,650 | 0.3% | 31 |
| ISHARES TR | [IUSV](https://holderbook.com/stocks/IUSV/) | $131.0M | 1,189,639 | 0.3% | 31 |
| PROCTER & GAMBLE CO | [PG](https://holderbook.com/stocks/PG/) | $130.2M | 888,116 | 0.3% | 31 |
| CATERPILLAR INC | [CAT](https://holderbook.com/stocks/CAT/) | $129.4M | 121,522 | 0.3% | 31 |
| HEICO CORP NEW | [HEI](https://holderbook.com/stocks/HEI/) | $127.4M | 357,664 | 0.3% | 31 |
| ISHARES TR | [IWF](https://holderbook.com/stocks/IWF/) | $120.9M | 973,601 | 0.3% | 16 |
| LINDE PLC | [LIN](https://holderbook.com/stocks/LIN/) | $120.6M | 232,315 | 0.3% | 14 |
| CHEVRON CORPORATION | [CVX](https://holderbook.com/stocks/CVX/) | $120.5M | 727,136 | 0.3% | 31 |
| AON PLC | [AON](https://holderbook.com/stocks/AON/) | $119.6M | 360,607 | 0.3% | 25 |
| BLACKSTONE INC | [BX](https://holderbook.com/stocks/BX/) | $119.0M | 1,011,005 | 0.3% | 28 |
| MERCK & CO INC | [MRK](https://holderbook.com/stocks/MRK/) | $118.3M | 920,715 | 0.3% | 31 |
| FIRST TR EXCHANGE-TRADED FD | [RDVY](https://holderbook.com/stocks/RDVY/) | $116.0M | 1,431,021 | 0.3% | 26 |
| LIVE NATION ENTERTAINMENT IN | [LYV](https://holderbook.com/stocks/LYV/) | $115.0M | 628,014 | 0.3% | 31 |
| TESLA INC | [TSLA](https://holderbook.com/stocks/TSLA/) | $114.9M | 273,193 | 0.3% | 31 |
| COCA COLA CO | [KO](https://holderbook.com/stocks/KO/) | $113.5M | 1,397,145 | 0.3% | 31 |
| DEXCOM INC | [DXCM](https://holderbook.com/stocks/DXCM/) | $112.2M | 1,665,665 | 0.3% | 31 |
| WASTE MGMT INC DEL | [WM](https://holderbook.com/stocks/WM/) | $109.5M | 491,328 | 0.3% | 31 |
| AMETEK INC | [AME](https://holderbook.com/stocks/AME/) | $105.5M | 436,176 | 0.3% | 31 |
| JONES LANG LASALLE INC | [JLL](https://holderbook.com/stocks/JLL/) | $105.5M | 340,350 | 0.3% | 31 |
| ISHARES TR | [EFA](https://holderbook.com/stocks/EFA/) | $103.3M | 994,809 | 0.3% | 16 |
| HONEYWELL INTL INC | [HON](https://holderbook.com/stocks/HON/) | $101.7M | 454,384 | 0.3% | 1 |
| CISCO SYS INC | [CSCO](https://holderbook.com/stocks/CSCO/) | $100.7M | 857,629 | 0.3% | 31 |
| HONEYWELL AEROSPACE INC | [HONA](https://holderbook.com/stocks/HONA/) | $100.4M | 454,071 | 0.3% | 1 |
| GENERAL DYNAMICS CORP | [GD](https://holderbook.com/stocks/GD/) | $98.8M | 278,892 | 0.3% | 31 |
| OREILLY AUTOMOTIVE INC | [ORLY](https://holderbook.com/stocks/ORLY/) | $97.1M | 1,054,007 | 0.3% | 31 |
| ILLINOIS TOOL WKS INC | [ITW](https://holderbook.com/stocks/ITW/) | $97.1M | 358,826 | 0.3% | 31 |
| DEERE & CO | [DE](https://holderbook.com/stocks/DE/) | $96.9M | 152,753 | 0.3% | 31 |
| STARBUCKS CORP | [SBUX](https://holderbook.com/stocks/SBUX/) | $96.7M | 945,888 | 0.3% | 31 |
| ABBOTT LABORATORIES | [ABT](https://holderbook.com/stocks/ABT/) | $96.5M | 1,063,211 | 0.3% | 31 |
| GENERAC HLDGS INC | [GNRC](https://holderbook.com/stocks/GNRC/) | $95.3M | 325,426 | 0.2% | 31 |
| ISHARES TR | [IUSG](https://holderbook.com/stocks/IUSG/) | $94.3M | 501,346 | 0.2% | 31 |
| MCDONALDS CORP | [MCD](https://holderbook.com/stocks/MCD/) | $91.9M | 340,138 | 0.2% | 31 |
| NETFLIX INC | [NFLX](https://holderbook.com/stocks/NFLX/) | $91.8M | 1,285,481 | 0.2% | 27 |
| TAIWAN SEMICONDUCTOR MANUFAC | [TSM](https://holderbook.com/stocks/TSM/) | $91.5M | 191,662 | 0.2% | 31 |
| ISHARES TR | [ITOT](https://holderbook.com/stocks/ITOT/) | $91.4M | 556,582 | 0.2% | 31 |
| GUIDEWIRE SOFTWARE INC | [GWRE](https://holderbook.com/stocks/GWRE/) | $89.4M | 726,387 | 0.2% | 31 |

## What the disclosed book did

Not the fund's return. This is the change in value of the positions disclosed on Form 13F, had they been left untouched, against SPY over the same quarter ends.

| Quarter | Book | Market | Difference | Priced |
|---|---|---|---|---|
| Q2 2026 | +11.9% | +14.8% | -2.9% | 100% |
| Q1 2026 | -6.7% | -4.6% | -2.1% | 100% |
| Q4 2025 | -0.4% | +2.4% | -2.7% | 100% |
| Q3 2025 | +4.7% | +7.8% | -3.2% | 100% |
| Q2 2025 | +9.1% | +10.5% | -1.4% | 100% |
| Q1 2025 | -3.4% | -4.6% | +1.1% | 100% |
| Q4 2024 | +0.9% | +2.1% | -1.2% | 100% |
| Q3 2024 | +5.4% | +5.4% | +0.0% | 100% |

## Quarter by quarter

| Quarter | Value | Positions |
|---|---|---|
| Q2 2026 | $38.4B | 1,998 |
| Q1 2026 | $34.9B | 1,922 |
| Q4 2025 | $37.3B | 1,867 |
| Q3 2025 | $37.6B | 1,844 |
| Q2 2025 | $36.0B | 1,824 |
| Q1 2025 | $33.2B | 1,801 |
| Q4 2024 | $34.4B | 1,816 |
| Q3 2024 | $34.1B | 1,821 |
| Q2 2024 | $32.4B | 1,822 |
| Q1 2024 | $31.8B | 1,787 |
| Q4 2023 | $29.3B | 1,785 |
| Q3 2023 | $26.1B | 1,791 |