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 ROK

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Shares Held

Position Value (USD)

25 of 25 shown
Report Date Value (USD) Shares
2026-03-31 $101,945,964 284,067
2025-12-31 $108,610,057 279,153
2025-09-30 $97,588,426 279,199
2025-06-30 $91,987,505 276,929
2025-03-31 $74,766,387 289,366
2024-12-31 $88,859,541 310,926
2024-09-30 $85,918,475 320,042
2024-06-30 $115,580,437 419,865
2024-03-31 $118,019,822 405,107
2023-12-31 $122,424,747 394,308
2023-09-30 $112,159,379 392,344
2023-06-30 $122,567,260 372,036
2023-03-31 $106,965,166 364,509
2022-12-31 $85,685,554 332,669
2022-09-30 $60,771,156 282,512
2022-06-30 $53,508,955 268,471
2022-03-31 $86,751,333 309,793
2021-12-31 $112,184,229 321,583
2021-09-30 $88,481,928 300,918
2021-06-30 $83,236,682 291,017
2021-03-31 $69,046,783 260,122
2020-12-31 $53,766,892 214,373
2020-09-30 $8,227,833 37,284
2020-06-30 $7,825,194 36,738
2020-03-31 $10,111,120 67,001