BLAIR WILLIAM & CO/IL
Top Portfolio Positions
1,179 positions ·
$28,935,290,692 total
· as of Mar 31, 2026
| Ticker | Company | Shares | Value (USD) | % of Portfolio | Open |
|---|---|---|---|---|---|
| AAPL |
Apple Inc.
Technology
|
5,930,914 | $1,505,206,664 | 5.20% | |
| MSFT |
Microsoft Corp
Technology
|
3,498,110 | $1,294,895,378 | 4.48% | |
| AMZN |
Amazon Com Inc
Consumer Cyclical
|
6,057,938 | $1,261,686,747 | 4.36% | |
| NVDA |
Nvidia Corp
Technology
|
5,427,875 | $946,621,400 | 3.27% | |
| GOOGL |
Alphabet Inc.
Communication Services
|
2,436,117 | $700,529,804 | 2.42% | |
| JPM |
Jpmorgan Chase & Co
Financial Services
|
2,307,253 | $678,701,542 | 2.35% | |
| GEV |
GE Vernova Inc.
Industrials
|
664,603 | $580,131,958 | 2.00% | |
| V |
Visa Inc.
Financial Services
|
1,844,583 | $557,506,765 | 1.93% | |
| SPY |
Spdr S&P 500 ETF Trust
|
845,294 | $549,728,499 | 1.90% | |
| IDXX |
Idexx Laboratories Inc /De
Healthcare
|
946,336 | $531,736,735 | 1.84% |
Portfolio Trend
25 quarters · across all stocks
Holdings in AON
Shares Held
Position Value (USD)
24 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $136,085,661 | 421,605 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $175,136,814 | 496,307 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $188,906,456 | 529,773 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $202,635,042 | 567,987 | Shares | Sole | 2025-07-24 | |
| 2025-03-31 | $221,395,177 | 554,750 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $202,654,952 | 564,247 | Shares | Sole | 2025-02-12 | |
| 2024-09-30 | $205,016,374 | 592,550 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $176,886,940 | 602,517 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $203,957,983 | 611,165 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $215,657,751 | 741,041 | Shares | Sole | 2024-02-12 | |
| 2023-09-30 | $235,166,168 | 725,329 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $248,262,316 | 719,184 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $228,954,454 | 726,171 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $228,089,892 | 759,945 | Shares | Sole | 2023-02-10 | |
| 2022-09-30 | $204,266,679 | 762,559 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $203,724,901 | 755,432 | Shares | Sole | 2022-08-10 | |
| 2022-03-31 | $238,824,857 | 733,424 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $219,168,352 | 729,200 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $173,975,347 | 608,795 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $145,025,211 | 607,410 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $127,642,937 | 554,704 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $87,939,236 | 416,241 | Shares | Sole | 2021-02-09 | |
| 2020-09-30 | $73,674,474 | 357,123 | Shares | Sole | 2020-11-06 | |
| 2020-06-30 | $49,134,186 | 255,110 | Shares | Sole | 2020-08-12 | |
| No 13F history on record for this holder in this stock. | ||||||