WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

CIK

1644956

City

CHICAGO

State / Country

IL

Stock

SIGI — Selective Insurance Group Inc

Top Portfolio Positions

404 positions · $30,335,994,855 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio	Open
TSM	Taiwan Semiconductor Manufacturing Co Ltd Technology	5,518,260	$1,864,895,967	6.15%
NVDA	Nvidia Corp Technology	8,941,756	$1,559,442,246	5.14%
AAPL	Apple Inc. Technology	4,812,433	$1,221,347,371	4.03%
MSFT	Microsoft Corp Technology	2,896,782	$1,072,301,792	3.53%
GOOGL	Alphabet Inc. Communication Services	2,504,605	$720,224,213	2.37%
AVGO	Broadcom Inc. Technology	2,201,558	$681,404,216	2.25%
AMZN	Amazon Com Inc Consumer Cyclical	3,163,629	$658,889,011	2.17%
META	Meta Platforms, Inc. Communication Services	1,013,122	$579,637,489	1.91%
MA	Mastercard Inc Financial Services	1,060,651	$529,964,878	1.75%
AZN	Astrazeneca PLC Healthcare	1,942,155	$383,031,809	1.26%

Portfolio Trend

25 quarters · across all stocks

Holdings in SIGI

Compact Export CSV

Shares Held

Position Value (USD)

11 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$27,925,888	370,419	+3.6%	Shares	Sole	2026-05-08
2025-12-31	$29,909,263	357,467	-9.5%	Shares	Sole	2026-02-09
2025-09-30	$32,011,381	394,861	-5.7%	Shares	Sole	2025-11-12
2025-06-30	$36,278,015	418,673	+43.5%	Shares	Sole	2025-07-29
2025-03-31	$26,698,647	291,661	+1412.9%	Shares	Sole	2025-05-09
2021-06-30	$1,564,409	19,278	-88.5%	Shares	Sole	2021-08-12
2021-03-31	$12,136,159	167,303	-36.9%	Shares	Sole	2021-05-13
2020-12-31	$17,766,445	265,250	-1.9%	Shares	Sole	2021-02-09
2020-09-30	$13,926,757	270,475	+9.2%	Shares	Sole	2020-11-06
2020-06-30	$13,064,594	247,717	-0.2%	Shares	Sole	2020-08-12
2020-03-31	$12,340,311	248,296	—	Shares	Sole	2020-05-08
No 13F history on record for this holder in this stock.