Mariner
KOS icon

Mariner’s Kosmos Energy KOS Stock Holding History

Mariner’s Portfolio KOS Stock Details KOS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$754K Buy
357,246
+256,791
+256% +$715K ﹤0.01% 2170
2026
Q1 		$279K Buy
100,455
+83,210
+483% +$156K ﹤0.01% 2932
2025
Q4 		$15.6K Sell
17,245
-39,226
-69% -$51.7K ﹤0.01% 3496
2025
Q3 		$93.7K Sell
56,471
-46,594
-45% -$87.2K ﹤0.01% 3372
2025
Q2 		$177K Buy
103,065
+9,941
+11% +$18K ﹤0.01% 3093
2025
Q1 		$212K Buy
93,124
+47,512
+104% +$140K ﹤0.01% 2953
2024
Q4 		$156K Buy
45,612
+1,490
+3% +$5.67K ﹤0.01% 3079
2024
Q3 		$177K Buy
44,122
+13,233
+43% +$64.5K ﹤0.01% 2964
2024
Q2 		$171K Buy
30,889
+6,561
+27% +$38.3K ﹤0.01% 2829
2024
Q1 		$145K Sell
24,328
-6,633
-21% -$39.9K ﹤0.01% 2852
2023
Q4 		$208K Sell
30,961
-2,135
-6% -$14.9K ﹤0.01% 2665
2023
Q3 		$271K Buy
33,096
+3,203
+11% +$22.7K ﹤0.01% 2248
2023
Q2 		$177K Sell
29,893
-11,874
-28% -$77.3K ﹤0.01% 2503
2023
Q1 		$310K Buy
41,767
+1,377
+3% +$10.1K ﹤0.01% 2041
2022
Q4 		$257K Sell
40,390
-2,352
-6% -$14.7K ﹤0.01% 2154
2022
Q3 		$221K Buy
42,742
+5,249
+14% +$31.8K ﹤0.01% 1992
2022
Q2 		$232K Sell
37,493
-12,762
-25% -$92.1K ﹤0.01% 1342
2022
Q1 		$361K Buy
+50,255
New +$256K ﹤0.01% 1236

Other funds holding KOS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
EPIM
Equinox Partners Investment Management Stamford, Connecticut $212M AUM 153.42% 1-Year Est. Return
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management Los Angeles, California $34.3B AUM 22.63% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Grantham, Mayo, Van Otterloo & Co (GMO)
Grantham, Mayo, Van Otterloo & Co (GMO) Boston, Massachusetts $44.4B AUM 36.05% 1-Year Est. Return

Mariner's KOS Position: Q2 2026 in Review

Mariner increased its Kosmos Energy (KOS) stake by 256% in Q2 2026, buying an estimated $715K and bringing the position to 357,246 shares worth $754K. The position accounts for ﹤0.01% of the portfolio, ranked #2170.

Mariner first reported a position in KOS in Q1 2022 and has held it in 18 quarters since. 266 funds tracked by Wall St. Rank hold KOS as of Q2 2026.

  • Mariner held 357,246 shares of Kosmos Energy worth $754K as of Q2 2026.
  • Mariner bought 256,791 Kosmos Energy shares in Q2 2026, an estimated $715K.
  • Kosmos Energy made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #2170 holding.
  • Mariner first reported a position in Kosmos Energy in Q1 2022 and has held it in 18 quarters since.
  • 266 funds tracked by Wall St. Rank held Kosmos Energy as of Q2 2026.

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