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 MTD

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Shares Held

Position Value (USD)

25 of 25 shown
Report Date Value (USD) Shares
2026-03-31 $32,291,764 25,604
2025-12-31 $7,274,882 5,218
2025-09-30 $1,097,483 894
2025-06-30 $1,053,723 897
2025-03-31 $902,215 764
2024-12-31 $1,032,786 844
2024-09-30 $1,636,172 1,091
2024-06-30 $1,541,541 1,103
2024-03-31 $1,465,750 1,101
2023-12-31 $1,331,830 1,098
2023-09-30 $1,274,280 1,150
2023-06-30 $1,218,513 929
2023-03-31 $1,357,296 887
2022-12-31 $1,363,059 943
2022-09-30 $1,090,624 1,006
2022-06-30 $1,115,455 971
2022-03-31 $1,342,979 978
2021-12-31 $2,652,739 1,563
2021-09-30 $2,156,945 1,566
2021-06-30 $2,639,072 1,905
2021-03-31 $2,302,134 1,992
2020-12-31 $3,340,402 2,931
2020-09-30 $2,841,236 2,942
2020-06-30 $2,388,455 2,965
2020-03-31 $2,145,414 3,107