Mariner
ACGL icon

Mariner’s Arch Capital ACGL Stock Holding History

Mariner’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
Q2 		$47.9M Buy
493,580
+281,074
+132% +$26.5M 0.05% 293
2026
Q1 		$20.4M Buy
212,506
+22,283
+12% +$2.13M 0.02% 465
2025
Q4 		$18.2M Buy
190,223
+53,327
+39% +$4.88M 0.02% 473
2025
Q3 		$12.4M Sell
136,896
-471,866
-78% -$42.3M 0.02% 553
2025
Q2 		$55.4M Buy
608,762
+6,781
+1% +$626K 0.08% 220
2025
Q1 		$57.9M Buy
601,981
+2,214
+0.4% +$204K 0.1% 188
2024
Q4 		$55.4M Buy
599,767
+194,282
+48% +$19.6M 0.09% 193
2024
Q3 		$45.4M Buy
405,485
+432
+0.1% +$44.9K 0.08% 220
2024
Q2 		$40.9M Buy
405,053
+362,468
+851% +$35.2M 0.08% 220
2024
Q1 		$3.94M Buy
42,585
+8,648
+25% +$731K 0.01% 816
2023
Q4 		$2.52M Buy
33,937
+45
+0.1% +$3.68K 0.01% 951
2023
Q3 		$2.7M Buy
33,892
+900
+3% +$70K 0.01% 851
2023
Q2 		$2.47M Buy
32,992
+11,763
+55% +$851K 0.01% 893
2023
Q1 		$1.44M Buy
21,229
+4,427
+26% +$291K ﹤0.01% 1103
2022
Q4 		$1.05M Buy
16,802
+4,191
+33% +$234K ﹤0.01% 1213
2022
Q3 		$574K Buy
12,611
+1,773
+16% +$80.1K ﹤0.01% 1338
2022
Q2 		$493K Buy
10,838
+739
+7% +$34.3K ﹤0.01% 1129
2022
Q1 		$489K Buy
+10,099
New +$470K ﹤0.01% 1155
2016
Q3 		– Sell
-9,336
Closed -$224K – 804
2016
Q2 		$224K Buy
9,336
+135
+1% +$3.19K 0.01% 472
2016
Q1 		$218K Buy
+9,201
New +$210K 0.01% 457

Other funds holding ACGL

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
WCM Investment Management
WCM Investment Management Laguna Beach, California $55.2B AUM 57.07% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Mariner's ACGL Position: Q2 2026 in Review

Mariner increased its Arch Capital (ACGL) stake by 132% in Q2 2026, buying an estimated $26.5M and bringing the position to 493,580 shares worth $47.9M. The position accounts for 0.05% of the portfolio, ranked #293.

Mariner first reported a position in ACGL in Q1 2016 and has held it in 20 quarters since. The position peaked at $57.9M in Q1 2025. 908 funds tracked by Wall St. Rank hold ACGL as of Q2 2026.

  • Mariner held 493,580 shares of Arch Capital worth $47.9M as of Q2 2026.
  • Mariner bought 281,074 Arch Capital shares in Q2 2026, an estimated $26.5M.
  • Arch Capital made up 0.05% of Mariner's portfolio in Q2 2026, its #293 holding.
  • Mariner first reported a position in Arch Capital in Q1 2016 and has held it in 20 quarters since.
  • Mariner's Arch Capital position peaked at $57.9M in Q1 2025.
  • 908 funds tracked by Wall St. Rank held Arch Capital as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.