BLAIR WILLIAM & CO/IL

CIK
902367
City
CHICAGO
State / Country
IL

Top Portfolio Positions

1,174 positions · $28,696,806,188 total · as of Mar 31, 2026
Ticker Company Shares Value (USD) % of Portfolio
AAPL
Apple Inc.
Technology
5,930,914 $1,505,206,664 5.25%
MSFT
Microsoft Corp
Technology
3,498,110 $1,294,895,378 4.51%
AMZN
Amazon Com Inc
Consumer Cyclical
6,057,938 $1,261,686,747 4.40%
NVDA
Nvidia Corp
Technology
5,427,875 $946,621,400 3.30%
GOOGL
Alphabet Inc.
Communication Services
2,436,117 $700,529,804 2.44%
JPM
Jpmorgan Chase & Co
Financial Services
2,307,253 $678,701,542 2.37%
GEV
GE Vernova Inc.
Industrials
664,603 $580,131,958 2.02%
V
Visa Inc.
Financial Services
1,844,583 $557,506,765 1.94%
SPY
Spdr S&P 500 Etf Trust
845,294 $549,728,499 1.92%
IDXX
Idexx Laboratories Inc /De
Healthcare
946,336 $531,736,735 1.85%

Portfolio Trend

25 quarters · across all stocks

Holdings in IBRX

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Shares Held

Position Value (USD)

21 of 21 shown
Report Date Value (USD) Shares
2026-03-31 $1,855,687 241,941
2025-12-31 $475,623 240,214
2025-09-30 $590,926 240,214
2025-06-30 $633,108 239,814
2025-03-31 $702,835 233,500
2024-12-31 $597,760 233,500
2024-09-30 $769,296 206,800
2024-06-30 $1,306,976 206,800
2024-03-31 $1,683,720 313,542
2023-12-31 $763,100 152,012
2023-09-30 $274,560 162,462
2023-06-30 $150,206 54,031
2023-03-31 $96,516 53,031
2022-12-31 $268,867 53,031
2022-09-30 $266,049 53,531
2022-06-30 $199,135 53,531
2022-03-31 $185,130 33,000
2021-12-31 $200,640 33,000
2021-09-30 $321,420 33,000
2021-06-30 $357,000 25,000
2021-03-31 $403,580 17,000