Marshall Wace
KOS icon

Marshall Wace’s Kosmos Energy KOS Stock Holding History

Marshall Wace’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
Q1 		$469K Buy
168,691
+135,419
+407% +$255K ﹤0.01% 2483
2025
Q4 		$30.3K Sell
33,272
-12,554
-27% -$16.5K ﹤0.01% 2811
2025
Q3 		$76.1K Buy
45,826
+22,291
+95% +$41.7K ﹤0.01% 2688
2025
Q2 		$40.5K Hold
23,535
– – ﹤0.01% 2610
2025
Q1 		$53.7K Buy
+23,535
New +$69.4K ﹤0.01% 2532
2024
Q3 		– Sell
-250,735
Closed -$1.39M – 2753
2024
Q2 		$1.39M Buy
250,735
+124,058
+98% +$724K ﹤0.01% 1542
2024
Q1 		$755K Buy
+126,677
New +$762K ﹤0.01% 1766
2023
Q1 		– Sell
-49,342
Closed -$314K – 2896
2022
Q4 		$314K Sell
49,342
-9,158
-16% -$57.2K ﹤0.01% 2552
2022
Q3 		$303K Sell
58,500
-473,620
-89% -$2.87M ﹤0.01% 2949
2022
Q2 		$3.29M Sell
532,120
-2,235,715
-81% -$16.1M 0.01% 1663
2022
Q1 		$19.9M Buy
+2,767,835
New +$14.1M 0.04% 502
2020
Q2 		– Sell
-939,285
Closed -$845K – 1777
2020
Q1 		$845K Sell
939,285
-185,526
-16% -$737K 0.01% 844
2019
Q4 		$6.41M Sell
1,124,811
-229,244
-17% -$1.38M 0.04% 445
2019
Q3 		$8.45M Buy
1,354,055
+724,850
+115% +$4.45M 0.07% 343
2019
Q2 		$3.94M Buy
629,205
+305,056
+94% +$1.95M 0.03% 561
2019
Q1 		$2.02M Buy
+324,149
New +$1.8M 0.02% 736
2018
Q3 		– Sell
-30,275
Closed -$250K – 1224
2018
Q2 		$250K Buy
+30,275
New +$221K ﹤0.01% 644
2015
Q2 		– Sell
-19,417
Closed -$154K – 971
2015
Q1 		$154K Buy
+19,417
New +$163K ﹤0.01% 759

Other funds holding KOS

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
EPIM
Equinox Partners Investment Management Stamford, Connecticut $245M AUM 225.58% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management Los Angeles, California $32.4B AUM 17.21% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Grantham, Mayo, Van Otterloo & Co (GMO)
Grantham, Mayo, Van Otterloo & Co (GMO) Boston, Massachusetts $39.1B AUM 28.69% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Marshall Wace's KOS Position: Q1 2026 in Review

Marshall Wace increased its Kosmos Energy (KOS) stake by 407% in Q1 2026, buying an estimated $255K and bringing the position to 168,691 shares worth $469K. The position accounts for ﹤0.01% of the portfolio, ranked #2483.

Marshall Wace first reported a position in KOS in Q1 2015 and has held it in 18 quarters since. The position peaked at $19.9M in Q1 2022. 262 funds tracked by Wall St. Rank hold KOS as of Q1 2026.

  • Marshall Wace held 168,691 shares of Kosmos Energy worth $469K as of Q1 2026.
  • Marshall Wace bought 135,419 Kosmos Energy shares in Q1 2026, an estimated $255K.
  • Kosmos Energy made up ﹤0.01% of Marshall Wace's portfolio in Q1 2026, its #2483 holding.
  • Marshall Wace first reported a position in Kosmos Energy in Q1 2015 and has held it in 18 quarters since.
  • Marshall Wace's Kosmos Energy position peaked at $19.9M in Q1 2022.
  • 262 funds tracked by Wall St. Rank held Kosmos Energy as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.