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 INSP
Shares Held
Position Value (USD)
22 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $58,666,266 | 1,137,384 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $107,105,315 | 1,161,285 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $96,279,916 | 1,297,573 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $99,815,061 | 769,169 | Shares | Sole | 2025-07-29 | |
| 2025-03-31 | $110,367,979 | 692,918 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $167,326,027 | 902,611 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $191,284,956 | 906,349 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $103,104,371 | 770,413 | Shares | Sole | 2024-08-08 | |
| 2024-03-31 | $162,555,434 | 756,811 | Shares | Sole | 2024-05-08 | |
| 2023-12-31 | $164,157,228 | 806,947 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $137,746,133 | 694,145 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $271,451,631 | 836,162 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $195,844,028 | 836,690 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $209,922,585 | 833,423 | Shares | Sole | 2023-02-09 | |
| 2022-09-30 | $116,818,010 | 658,612 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $121,364,303 | 664,391 | Shares | Sole | 2022-08-10 | |
| 2022-03-31 | $193,566,078 | 754,085 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $203,416,981 | 884,191 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $208,654,890 | 895,976 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $147,162,658 | 761,475 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $133,132,035 | 643,181 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $99,326,755 | 528,081 | Shares | Sole | 2021-02-09 | |
| No 13F history on record for this holder in this stock. | ||||||