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 RBC

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Shares Held

Position Value (USD)

24 of 24 shown
Report Date Value (USD) Shares
2026-03-31 $118,309,458 217,833
2025-12-31 $99,656,841 222,235
2025-09-30 $83,094,302 212,904
2025-06-30 $80,728,346 209,793
2025-03-31 $67,727,758 210,485
2024-12-31 $55,520,384 185,600
2024-09-30 $29,332,054 97,976
2024-06-30 $1,284,152 4,760
2024-03-31 $1,886,772 6,979
2023-12-31 $2,302,196 8,081
2023-09-30 $1,912,373 8,168
2023-06-30 $3,306,848 15,206
2023-03-31 $2,395,024 10,291
2022-12-31 $1,705,993 8,149
2022-09-30 $547,163 2,633
2022-06-30 $448,873 2,427
2022-03-31 $337,351 1,740
2021-09-30 $481,694 2,270
2021-06-30 $702,955 3,525
2021-03-31 $718,013 3,649
2020-12-31 $430,591 2,405
2020-09-30 $327,388 2,701
2020-06-30 $267,543 1,996
2020-03-31 $225,805 2,002