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 FAST

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Shares Held

Position Value (USD)

25 of 25 shown
Report Date Value (USD) Shares
2026-03-31 $342,140,004 7,373,707
2025-12-31 $281,498,546 7,014,666
2025-09-30 $341,591,258 6,965,564
2025-06-30 $286,564,866 6,822,973
2025-03-31 $127,671,883 3,292,634
2024-12-31 $117,097,057 3,256,767
2024-09-30 $116,935,108 3,274,576
2024-06-30 $102,223,933 3,253,467
2024-03-31 $126,310,270 3,274,832
2023-12-31 $106,086,102 3,275,779
2023-09-30 $89,643,886 3,281,255
2023-06-30 $97,396,147 3,302,124
2023-03-31 $89,172,286 3,306,351
2022-12-31 $77,976,214 3,295,698
2022-09-30 $77,248,352 3,355,706
2022-06-30 $82,926,729 3,322,385
2022-03-31 $102,194,165 3,440,881
2021-12-31 $112,033,060 3,497,754
2021-09-30 $90,989,694 3,526,049
2021-06-30 $90,429,560 3,478,060
2021-03-31 $90,074,055 3,582,898
2020-12-31 $87,010,372 3,563,808
2020-09-30 $81,390,516 3,610,136
2020-06-30 $79,023,156 3,689,223
2020-03-31 $56,900,828 3,641,653