WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Top Portfolio Positions
404 positions ·
$30,335,994,855 total
· as of Mar 31, 2026
| Ticker | Company | Shares | Value (USD) | % of Portfolio | Open |
|---|---|---|---|---|---|
| TSM |
Taiwan Semiconductor Manufacturing Co Ltd
Technology
|
5,518,260 | $1,864,895,967 | 6.15% | |
| NVDA |
Nvidia Corp
Technology
|
8,941,756 | $1,559,442,246 | 5.14% | |
| AAPL |
Apple Inc.
Technology
|
4,812,433 | $1,221,347,371 | 4.03% | |
| MSFT |
Microsoft Corp
Technology
|
2,896,782 | $1,072,301,792 | 3.53% | |
| GOOGL |
Alphabet Inc.
Communication Services
|
2,504,605 | $720,224,213 | 2.37% | |
| AVGO |
Broadcom Inc.
Technology
|
2,201,558 | $681,404,216 | 2.25% | |
| AMZN |
Amazon Com Inc
Consumer Cyclical
|
3,163,629 | $658,889,011 | 2.17% | |
| META |
Meta Platforms, Inc.
Communication Services
|
1,013,122 | $579,637,489 | 1.91% | |
| MA |
Mastercard Inc
Financial Services
|
1,060,651 | $529,964,878 | 1.75% | |
| AZN |
Astrazeneca PLC
Healthcare
|
1,942,155 | $383,031,809 | 1.26% |
Portfolio Trend
25 quarters · across all stocks
Holdings in A
Shares Held
Position Value (USD)
24 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $204,681,180 | 1,795,764 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $280,713,634 | 2,063,009 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $275,193,438 | 2,144,086 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $261,331,610 | 2,214,487 | Shares | Sole | 2025-07-29 | |
| 2025-03-31 | $216,458,388 | 1,850,388 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $223,047,254 | 1,660,319 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $246,761,584 | 1,661,918 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $133,175,510 | 1,027,351 | Shares | Sole | 2024-08-08 | |
| 2024-03-31 | $127,901,252 | 878,986 | Shares | Sole | 2024-05-08 | |
| 2023-12-31 | $90,121,053 | 648,213 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $661,750 | 5,918 | Shares | Sole | 2023-11-09 | |
| 2023-03-31 | $809,980 | 5,855 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $5,300,902 | 35,422 | Shares | Sole | 2023-02-09 | |
| 2022-09-30 | $8,619,961 | 70,917 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $7,712,567 | 64,937 | Shares | Sole | 2022-08-10 | |
| 2022-03-31 | $8,839,644 | 66,800 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $20,394,648 | 127,746 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $31,471,343 | 199,780 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $38,065,952 | 257,533 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $44,656,399 | 351,238 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $42,971,938 | 362,663 | Shares | Sole | 2021-02-09 | |
| 2020-09-30 | $48,334,210 | 478,841 | Shares | Sole | 2020-11-06 | |
| 2020-06-30 | $43,031,771 | 486,950 | Shares | Sole | 2020-08-12 | |
| 2020-03-31 | $36,171,967 | 505,054 | Shares | Sole | 2020-05-08 | |
| No 13F history on record for this holder in this stock. | ||||||