Mariner
COO icon

Mariner’s Cooper Companies COO Stock Holding History

Mariner’s Portfolio COO Stock Details COO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$24.5M Buy
343,188
+119,828
+54% +$9.48M 0.03% 415
2025
Q4 		$18.3M Buy
223,360
+42,740
+24% +$3.2M 0.02% 471
2025
Q3 		$12.4M Buy
180,620
+5,268
+3% +$373K 0.02% 554
2025
Q2 		$12.5M Buy
175,352
+148,622
+556% +$11.4M 0.02% 532
2025
Q1 		$2.25M Sell
26,730
-7,412
-22% -$664K ﹤0.01% 1175
2024
Q4 		$3.14M Buy
34,142
+3,220
+10% +$328K 0.01% 991
2024
Q3 		$3.41M Buy
30,922
+1,086
+4% +$106K 0.01% 927
2024
Q2 		$2.6M Buy
29,836
+3,419
+13% +$319K 0.01% 985
2024
Q1 		$2.68M Buy
26,417
+2,049
+8% +$198K 0.01% 970
2023
Q4 		$2.31M Buy
24,368
+5,020
+26% +$421K 0.01% 989
2023
Q3 		$1.54M Sell
19,348
-816
-4% -$75.2K ﹤0.01% 1101
2023
Q2 		$1.93M Buy
20,164
+1,656
+9% +$155K 0.01% 992
2023
Q1 		$1.73M Buy
18,508
+1,824
+11% +$157K 0.01% 1020
2022
Q4 		$1.38M Buy
16,684
+2,132
+15% +$157K ﹤0.01% 1092
2022
Q3 		$960K Buy
+14,552
New +$1.11M ﹤0.01% 1073

Other funds holding COO

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
BW
Browning West Los Angeles, California $1.62B AUM 22.28% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Mariner's COO Position: Q1 2026 in Review

Mariner increased its Cooper Companies (COO) stake by 54% in Q1 2026, buying an estimated $9.48M and bringing the position to 343,188 shares worth $24.5M. The position accounts for 0.03% of the portfolio, ranked #415.

Mariner first reported a position in COO in Q3 2022 and has held it in 15 quarters since. 675 funds tracked by Wall St. Rank hold COO as of Q1 2026.

  • Mariner held 343,188 shares of Cooper Companies worth $24.5M as of Q1 2026.
  • Mariner bought 119,828 Cooper Companies shares in Q1 2026, an estimated $9.48M.
  • Cooper Companies made up 0.03% of Mariner's portfolio in Q1 2026, its #415 holding.
  • Mariner first reported a position in Cooper Companies in Q3 2022 and has held it in 15 quarters since.
  • 675 funds tracked by Wall St. Rank held Cooper Companies as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.