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 BWXT
Shares Held
Position Value (USD)
25 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $200,764,601 | 981,782 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $191,437,584 | 1,107,600 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $231,441,504 | 1,255,310 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $218,590,305 | 1,517,356 | Shares | Sole | 2025-07-29 | |
| 2025-03-31 | $24,017,427 | 243,461 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $150,491,900 | 1,351,036 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $343,933,539 | 3,164,062 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $377,294,210 | 3,971,518 | Shares | Sole | 2024-08-08 | |
| 2024-03-31 | $411,035,892 | 4,005,417 | Shares | Sole | 2024-05-08 | |
| 2023-12-31 | $355,634,879 | 4,634,887 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $422,052,447 | 5,628,867 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $414,260,973 | 5,788,193 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $400,422,578 | 6,351,881 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $362,943,778 | 6,249,032 | Shares | Sole | 2023-02-09 | |
| 2022-09-30 | $335,140,572 | 6,653,575 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $352,438,825 | 6,397,510 | Shares | Sole | 2022-08-10 | |
| 2022-03-31 | $352,098,978 | 6,537,300 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $333,070,085 | 6,956,351 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $390,655,089 | 7,253,158 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $427,495,324 | 7,355,391 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $492,008,408 | 7,461,456 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $445,280,644 | 7,386,872 | Shares | Sole | 2021-02-09 | |
| 2020-09-30 | $423,013,783 | 7,512,232 | Shares | Sole | 2020-11-06 | |
| 2020-06-30 | $430,585,549 | 7,602,146 | Shares | Sole | 2020-08-12 | |
| 2020-03-31 | $378,583,131 | 7,772,185 | Shares | Sole | 2020-05-08 | |
| No 13F history on record for this holder in this stock. | ||||||