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 MRCY
Shares Held
Position Value (USD)
27 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $23,862,568 | 327,288 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $71,861,771 | 984,273 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $195,522,694 | 2,526,133 | Shares | Sole | 2025-11-12 | |
| 2025-09-30 | $192,567,871 | 2,487,957 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $252,909,486 | 4,695,683 | Shares | Sole | 2025-07-29 | |
| 2025-03-31 | $231,488,011 | 5,372,198 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $270,169,242 | 6,432,601 | Shares | Sole | 2025-02-10 | |
| 2024-12-31 | $270,169,242 | 6,432,601 | Shares | Sole | 2025-02-12 | |
| 2024-09-30 | $270,081,944 | 7,299,512 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $173,179,958 | 6,416,449 | Shares | Sole | 2024-08-08 | |
| 2024-03-31 | $188,196,017 | 6,379,526 | Shares | Sole | 2024-05-08 | |
| 2023-12-31 | $239,781,152 | 6,556,772 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $250,341,254 | 6,749,562 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $185,840,205 | 5,372,657 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $273,408,060 | 5,348,358 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $232,915,008 | 5,205,968 | Shares | Sole | 2023-02-09 | |
| 2022-09-30 | $213,740,364 | 5,264,541 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $287,771,827 | 4,473,369 | Shares | Sole | 2022-08-10 | |
| 2022-03-31 | $296,921,021 | 4,606,998 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $182,679,279 | 3,317,822 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $158,772,213 | 3,348,212 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $224,412,613 | 3,385,827 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $230,929,698 | 3,268,644 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $286,156,605 | 3,249,564 | Shares | Sole | 2021-02-09 | |
| 2020-09-30 | $213,933,288 | 2,761,855 | Shares | Sole | 2020-11-06 | |
| 2020-06-30 | $165,588,739 | 2,105,120 | Shares | Sole | 2020-08-12 | |
| 2020-03-31 | $153,431,580 | 2,150,709 | Shares | Sole | 2020-05-08 | |
| No 13F history on record for this holder in this stock. | ||||||