William Blair & Company’s Hanover Insurance THG Stock Holding History

William Blair & Company’s Portfolio THG Stock Details THG Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$202K	Buy	+942	New	+$178K	﹤0.01%	1573
2016 Q1	–	Sell	-2,954	Closed	-$239K	–	1241
2015 Q4	$239K	Hold	2,954	–	–	﹤0.01%	1030
2015 Q3	$229K	Sell	2,954 -264,912	-99%	-$21M	﹤0.01%	1240
2015 Q2	$19.8M	Sell	267,866 -40,324	-13%	-$2.9M	0.03%	652
2015 Q1	$22.4M	Buy	308,190 +4,043	+1%	+$286K	0.03%	561
2014 Q4	$21.7M	Buy	304,147 +13,136	+5%	+$888K	0.04%	558
2014 Q3	$17.9M	Buy	291,011 +3,013	+1%	+$187K	0.03%	615
2014 Q2	$18.2M	Sell	287,998 -16,002	-5%	-$972K	0.03%	600
2014 Q1	$18.7M	Buy	304,000 +42,251	+16%	+$2.47M	0.03%	577
2013 Q4	$15.6M	Buy	261,749 +26,806	+11%	+$1.58M	0.03%	630
2013 Q3	$13M	Buy	234,943 +6,125	+3%	+$326K	0.02%	652
2013 Q2	$11.2M	Buy	+228,818	New	+$11.2M	0.02%	675

Other funds holding THG

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return

William Blair & Company's THG Position: Q2 2026 in Review

William Blair & Company opened a new position in Hanover Insurance (THG) in Q2 2026: 942 shares worth $202K. The stake represents ﹤0.01% of the portfolio and ranks #1573 among its holdings. This is a return to the name: William Blair & Company previously reported a position in THG as recently as Q4 2015.

William Blair & Company first reported a position in THG in Q2 2013 and has held it in 12 quarters since. The position peaked at $22.4M in Q1 2015. 547 funds tracked by Wall St. Rank hold THG as of Q2 2026.

William Blair & Company held 942 shares of Hanover Insurance worth $202K as of Q2 2026.
Hanover Insurance was a new William Blair & Company position in Q2 2026.
Hanover Insurance made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1573 holding.
William Blair & Company first reported a position in Hanover Insurance in Q2 2013 and has held it in 12 quarters since.
William Blair & Company's Hanover Insurance position peaked at $22.4M in Q1 2015.
547 funds tracked by Wall St. Rank held Hanover Insurance as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.