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 MDB

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Shares Held

Position Value (USD)

25 of 25 shown
Report Date Value (USD) Shares
2026-03-31 $66,328,264 270,982
2025-12-31 $123,341,015 293,886
2025-09-30 $93,117,103 300,010
2025-06-30 $75,834,108 361,132
2025-03-31 $78,408,185 447,025
2024-12-31 $86,246,094 370,457
2024-09-30 $80,512,663 297,809
2024-06-30 $78,944,866 315,830
2024-03-31 $97,271,058 271,222
2023-12-31 $106,443,688 260,349
2023-09-30 $86,494,743 250,086
2023-06-30 $107,053,442 260,477
2023-03-31 $57,751,050 247,731
2022-12-31 $34,733,992 176,458
2022-09-30 $30,833,985 155,288
2022-06-30 $40,078,737 154,446
2022-03-31 $58,910,969 132,805
2021-12-31 $100,947,045 190,700
2021-09-30 $90,508,702 191,955
2021-06-30 $67,820,790 187,599
2021-03-31 $45,330,187 169,503
2020-12-31 $60,697,866 169,056
2020-09-30 $38,902,940 168,040
2020-06-30 $35,851,124 158,395
2020-03-31 $683,655 5,007