Blair William & Co/Il
Institutional manager — quarterly 13F holdings, Q ending 2026-03-31
Reported value
$34.90B
Q ending 2026-03-31
Prior quarter
$37.26B
Q ending 2025-12-31
Change
-6.3% QoQ · +5.2% YoY
Positions
1,922
reported holdings
Largest positions
Top 100 of 1,922 reported positions by value, Q ending 2026-03-31. A manager can hold shares, calls and puts on the same security at once — such positions are listed as separate rows. Type: Shares = common stock, Put/Call = option positions (valued at the underlying), Principal = debt. Tickers link to stock pages where covered.
| Holding | Ticker | Type | Value ▼ | Shares |
|---|---|---|---|---|
| Apple Inc | AAPL | Shares | $1.51B | 5.9M |
| Microsoft Corp | MSFT | Shares | $1.29B | 3.5M |
| Amazon Com Inc | AMZN | Shares | $1.26B | 6.1M |
| Nvidia Corporation | NVDA | Shares | $946.6M | 5.4M |
| Alphabet Inc | GOOG | Shares | $870.8M | 3.0M |
| Alphabet Inc | GOOGL | Shares | $700.5M | 2.4M |
| Jpmorgan Chase & Co | JPM | Shares | $678.7M | 2.3M |
| Ge Vernova Inc | GEV | Shares | $580.1M | 665K |
| Visa Inc | V | Shares | $557.5M | 1.8M |
| State Str Spdr S&P 500 Etf T | SPY | Shares | $549.7M | 845K |
| Idexx Labs Inc | IDXX | Shares | $531.7M | 946K |
| Costco Wholesale Corporation | COST | Shares | $519.4M | 521K |
| Mastercard Incorporated | MA | Shares | $461.4M | 923K |
| Meta Platforms Inc | META | Shares | $412.9M | 722K |
| Fastenal Co | FAST | Shares | $342.1M | 7.4M |
| Invesco Exchange Traded Fd T | RSP | Shares | $322.5M | 1.7M |
| Amphenol Corp | APH | Shares | $318.4M | 2.5M |
| Ishares Tr | IVV | Shares | $317.4M | 486K |
| Vanguard Intl Equity Index F | VEU | Shares | $313.1M | 4.2M |
| Eli Lilly & Co | LLY | Shares | $298.0M | 324K |
| Walmart Inc | WMT | Shares | $295.1M | 2.4M |
| Bwx Technologies Inc | BWXT | Shares | $294.1M | 1.4M |
| Abbvie Inc | ABBV | Shares | $290.2M | 1.3M |
| Broadcom Inc | AVGO | Shares | $284.2M | 918K |
| Stryker Corporation | SYK | Shares | $278.5M | 848K |
| Intercontinental Exchange In | ICE | Shares | $250.6M | 1.6M |
| Home Depot Inc | HD | Shares | $250.4M | 761K |
| Vanguard Tax-Managed Fds | VEA | Shares | $247.5M | 3.9M |
| Danaher Corp Del | DHR | Shares | $245.9M | 1.3M |
| Progressive Corp | PGR | Shares | $241.8M | 1.2M |
| Vanguard Index Fds | VOO | Shares | $237.5M | 397K |
| Berkshire Hathaway Inc Del | BRK/B | Shares | $237.4M | 495K |
| Uber Technologies Inc | UBER | Shares | $237.3M | 3.3M |
| Johnson & Johnson | JNJ | Shares | $233.6M | 956K |
| Ecolab Inc | ECL | Shares | $230.5M | 866K |
| Vanguard Index Fds | VTV | Shares | $228.8M | 1.2M |
| Watsco Inc | WSO | Shares | $212.0M | 583K |
| American Express Co | AXP | Shares | $209.9M | 694K |
| Palo Alto Networks Inc | PANW | Shares | $209.2M | 1.3M |
| Intuitive Surgical Inc | ISRG | Shares | $196.0M | 425K |
| Transdigm Group Inc | TDG | Shares | $192.7M | 166K |
| Servicenow Inc | NOW | Shares | $188.3M | 1.8M |
| Veeva Sys Inc | VEEV | Shares | $187.5M | 1.1M |
| Boeing Co | BA | Shares | $183.5M | 922K |
| Invesco Qqq Tr | QQQ | Shares | $179.5M | 311K |
| Everpure Inc | P | Shares | $172.3M | 2.9M |
| Netflix Inc. | NFLX | Shares | $169.6M | 1.8M |
| Spdr Gold Tr | GLD | Shares | $166.4M | 387K |
| Cintas Corp | CTAS | Shares | $164.7M | 974K |
| Exxon Mobil Corp | XOM | Shares | $160.6M | 946K |
| Ishares Tr | IWM | Shares | $155.8M | 628K |
| Chevron Corporation | CVX | Shares | $148.1M | 716K |
| Vanguard Specialized Funds | VIG | Shares | $147.9M | 688K |
| Guidewire Software Inc | GWRE | Shares | $145.9M | 975K |
| Arista Networks Inc | ANET | Shares | $141.3M | 1.2M |
| Abbott Laboratories | ABT | Shares | $136.3M | 1.3M |
| Aon Plc | Shares | $136.1M | 422K | |
| Blackstone Inc | BX | Shares | $135.5M | 1.2M |
| Copart Inc | CPRT | Shares | $135.2M | 4.1M |
| Aaon Inc | AAON | Shares | $134.2M | 1.6M |
| Goldman Sachs Group Inc | GS | Shares | $132.2M | 156K |
| Procter & Gamble Co | PG | Shares | $129.1M | 894K |
| International Business Machs | IBM | Shares | $125.7M | 518K |
| Union Pac Corp | UNP | Shares | $124.9M | 515K |
| Quanta Svcs Inc | PWR | Shares | $124.0M | 226K |
| Dexcom Inc | DXCM | Shares | $121.0M | 1.9M |
| Rollins Inc | ROL | Shares | $121.0M | 2.3M |
| Vanguard Index Fds | VTI | Shares | $119.5M | 372K |
| Ishares Tr | IUSV | Shares | $119.2M | 1.2M |
| Rbc Bearings Inc | RBC | Shares | $118.3M | 218K |
| Linde Plc | Shares | $115.6M | 233K | |
| Curtiss Wright Corp | CW | Shares | $113.8M | 167K |
| Ishares Tr | IWF | Shares | $113.4M | 266K |
| Micron Technology Inc | MU | Shares | $112.3M | 332K |
| Waste Mgmt Inc Del | WM | Shares | $111.3M | 484K |
| Tesla Inc | TSLA | Shares | $110.1M | 296K |
| Vanguard Index Fds | VUG | Shares | $109.4M | 250K |
| Merck & Co Inc | MRK | Shares | $108.5M | 902K |
| Mcdonalds Corp | MCD | Shares | $108.2M | 348K |
| Coca Cola Co | KO | Shares | $107.7M | 1.4M |
| Jones Lang Lasalle Inc | JLL | Shares | $102.7M | 337K |
| Oreilly Automotive Inc | ORLY | Shares | $101.9M | 1.1M |
| Rockwell Automation Inc | ROK | Shares | $101.9M | 284K |
| Live Nation Entertainment In | LYV | Shares | $101.0M | 662K |
| General Dynamics Corp | GD | Shares | $100.2M | 292K |
| Crowdstrike Hldgs Inc | CRWD | Shares | $98.5M | 252K |
| Ametek Inc | AME | Shares | $98.1M | 457K |
| Zoetis Inc | ZTS | Shares | $94.0M | 795K |
| Illinois Tool Wks Inc | ITW | Shares | $93.8M | 360K |
| Ishares Tr | EFA | Shares | $93.1M | 959K |
| Heico Corp New | HEI | Shares | $92.4M | 337K |
| Diamondback Energy Inc | FANG | Shares | $88.1M | 445K |
| Nasdaq Inc | NDAQ | Shares | $87.1M | 1.0M |
| Thermo Fisher Scientific Inc | TMO | Shares | $85.0M | 173K |
| Pepsico Inc | PEP | Shares | $84.9M | 547K |
| Starbucks Corp | SBUX | Shares | $84.1M | 939K |
| Caterpillar Inc | CAT | Shares | $84.0M | 119K |
| Schwab Charles Corp | SCHW | Shares | $83.7M | 890K |
| Ishares Tr | IEFA | Shares | $83.6M | 923K |
| Deere & Co | DE | Shares | $83.2M | 148K |
Values as reported in public regulatory filings (USD); holdings are reported quarterly, up to 45 days after quarter end, and may contain reporting errors. Nothing here is investment advice.