WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

CIK
1644956
City
CHICAGO
State / Country
IL

Top Portfolio Positions

404 positions · $30,195,876,293 total · as of Mar 31, 2026
Ticker Company Shares Value (USD) % of Portfolio
TSM
Taiwan Semiconductor Manufacturing Co Ltd
Technology
5,518,260 $1,864,895,967 6.18%
NVDA
Nvidia Corp
Technology
8,941,756 $1,559,442,246 5.16%
AAPL
Apple Inc.
Technology
4,812,433 $1,221,347,371 4.04%
MSFT
Microsoft Corp
Technology
2,896,782 $1,072,301,792 3.55%
GOOGL
Alphabet Inc.
Communication Services
2,504,605 $720,224,213 2.39%
AVGO
Broadcom Inc.
Technology
2,201,558 $681,404,216 2.26%
AMZN
Amazon Com Inc
Consumer Cyclical
3,163,629 $658,889,011 2.18%
META
Meta Platforms, Inc.
Communication Services
1,013,122 $579,637,489 1.92%
MA
Mastercard Inc
Financial Services
1,060,651 $529,964,878 1.76%
AZN
Astrazeneca Plc
Healthcare
1,942,155 $383,031,809 1.27%

Portfolio Trend

26 quarters · across all stocks

Holdings in RUSHA

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Shares Held

Position Value (USD)

10 of 10 shown
Report Date Value (USD) Shares
2026-03-31 $15,788,588 238,823
2025-12-31 $12,478,587 231,342
2025-09-30 $53,131,374 993,667
2025-06-30 $54,116,148 1,050,595
2025-03-31 $57,165,257 1,070,310
2024-12-31 $34,368,013 627,268
2024-09-30 $40,658,443 769,609
2024-06-30 $33,200,732 792,948
2024-03-31 $42,514,950 794,375
2023-12-31 $11,782,121 234,237