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 RSI
Shares Held
Position Value (USD)
14 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $50,700,272 | 2,331,047 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $49,697,626 | 2,557,778 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $44,641,812 | 2,179,776 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $39,866,454 | 2,675,601 | Shares | Sole | 2025-07-29 | |
| 2025-03-31 | $27,374,688 | 2,553,609 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $21,635,040 | 1,576,898 | Shares | Sole | 2025-02-10 | |
| 2022-09-30 | $5,401,754 | 1,467,868 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $6,505,179 | 1,392,972 | Shares | Sole | 2022-08-10 | |
| 2022-03-31 | $9,289,620 | 1,277,802 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $21,357,798 | 1,294,412 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $27,202,916 | 1,416,081 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $25,114,021 | 2,048,452 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $32,941,799 | 2,016,022 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $41,249,485 | 1,905,288 | Shares | Sole | 2021-02-09 | |
| No 13F history on record for this holder in this stock. | ||||||