BLAIR WILLIAM & CO/IL

CIK

902367

City

CHICAGO

State / Country

Stock

Top Portfolio Positions

1,175 positions · $28,697,070,934 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%

25 quarters · across all stocks

Compact Export CSV

25 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2020-03-31	$1,149,313	47,928	+86.2%	Shares	Sole	2020-05-11
2020-06-30	$705,284	25,734	+0.6%	Shares	Sole	2020-08-12
2020-09-30	$812,461	25,592	-6.9%	Shares	Sole	2020-11-06
2020-12-31	$905,138	27,484	+3.6%	Shares	Sole	2021-02-09
2021-03-31	$941,353	26,517	-0.5%	Shares	Sole	2021-05-13
2021-06-30	$986,604	26,641	+3.2%	Shares	Sole	2021-08-12
2021-09-30	$966,065	25,826	-6.5%	Shares	Sole	2021-11-12
2021-12-31	$1,119,390	27,612	-7.6%	Shares	Sole	2022-02-14
2022-03-31	$1,320,139	29,899	-31.9%	Shares	Sole	2022-05-13
2022-06-30	$1,678,584	43,919	-2.4%	Shares	Sole	2022-08-10
2022-09-30	$1,615,715	45,006	+2.1%	Shares	Sole	2022-11-09
2022-12-31	$1,365,419	44,060	+2.2%	Shares	Sole	2023-02-10
2023-03-31	$1,455,250	43,093	+0.2%	Shares	Sole	2023-05-12
2023-06-30	$1,570,047	43,015	+1.3%	Shares	Sole	2023-08-11
2023-09-30	$1,248,118	42,453	+22.9%	Shares	Sole	2023-11-09
2023-12-31	$1,088,073	34,553	+0.3%	Shares	Sole	2024-02-12
2024-03-31	$1,075,371	34,456	+1.3%	Shares	Sole	2024-05-09
2024-06-30	$933,508	34,020	+4.2%	Shares	Sole	2024-08-12
2024-09-30	$1,143,740	32,641	-6.4%	Shares	Sole	2024-11-12
2024-12-31	$1,108,517	34,870	+4.9%	Shares	Sole	2025-02-12
2025-03-31	$990,696	33,256	-53.8%	Shares	Sole	2025-05-09
2025-06-30	$2,409,085	71,913	-1.1%	Shares	Sole	2025-07-24
2025-09-30	$2,390,839	72,692	-1.9%	Shares	Sole	2025-11-12
2025-12-31	$2,574,859	74,118	-9.4%	Shares	Sole	2026-02-17
2026-03-31	$2,955,844	81,834	—	Shares	Sole	2026-05-08
No 13F history on record for this holder in this stock.