Boston Partners’s Arch Capital ACGL Stock Holding History

Boston Partners’s Portfolio ACGL Stock Details ACGL Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$201M	Buy	+2,092,817	New	+$200M	0.21%	154
2023 Q4	–	Sell	-1,690,400	Closed	-$135M	–	706
2023 Q3	$135M	Buy	1,690,400 +558	+0%	+$43.4K	0.19%	166
2023 Q2	$126M	Sell	1,689,842 -349,637	-17%	-$25.3M	0.17%	178
2023 Q1	$138M	Buy	2,039,479 +10,444	+0.5%	+$686K	0.19%	158
2022 Q4	$127M	Buy	2,029,035 +609,547	+43%	+$34M	0.17%	164
2022 Q3	$64.7M	Buy	+1,419,488	New	+$64.1M	0.09%	203
2014 Q2	–	Sell	-1,655,328	Closed	-$31.7M	–	715
2014 Q1	$31.7M	Sell	1,655,328 -158,679	-9%	-$2.94M	0.06%	234
2013 Q4	$36.1M	Buy	1,814,007 +413,781	+30%	+$7.94M	0.07%	212
2013 Q3	$25.3M	Buy	1,400,226 +345,087	+33%	+$6.17M	0.06%	236
2013 Q2	$18.1M	Buy	+1,055,139	New	+$18.4M	0.05%	252

Other funds holding ACGL

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

WCM Investment Management Laguna Beach, California $43.8B AUM 42.28% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

Boston Partners's ACGL Position: Q1 2026 in Review

Boston Partners opened a new position in Arch Capital (ACGL) in Q1 2026: 2,092,817 shares worth $201M. The stake represents 0.21% of the portfolio and ranks #154 among its holdings. This is a return to the name: Boston Partners previously reported a position in ACGL as recently as Q3 2023.

Boston Partners first reported a position in ACGL in Q2 2013 and has held it in 10 quarters since. 909 funds tracked by Wall St. Rank hold ACGL as of Q1 2026.

Boston Partners held 2,092,817 shares of Arch Capital worth $201M as of Q1 2026.
Arch Capital was a new Boston Partners position in Q1 2026.
Arch Capital made up 0.21% of Boston Partners's portfolio in Q1 2026, its #154 holding.
Boston Partners first reported a position in Arch Capital in Q2 2013 and has held it in 10 quarters since.
909 funds tracked by Wall St. Rank held Arch Capital as of Q1 2026.

Based on Boston Partners's 13F filing for Q1 2026, filed 11 May 2026.