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Kosmos Energy
KOS

252 hedge funds and large institutions have $991M invested in Kosmos Energy in 2025 Q1 according to their latest regulatory filings, with 39 funds opening new positions, 101 increasing their positions, 72 reducing their positions, and 54 closing their positions.

New
Increased
Maintained
Reduced
Closed

40% more repeat investments, than reductions

Existing positions increased: 101 | Existing positions reduced: 72

0.95% less ownership

Funds ownership: 92.07% → 91.12% (-0.95%)

7% less funds holding

Funds holding: 270 → 252 (-18)

28% less first-time investments, than exits

New positions opened: 39 | Existing positions closed: 54

33% less capital invested

Capital invested by funds: $1.48B → $991M (-$492M)

41% less call options, than puts

Call options by funds: $12.3M | Put options by funds: $20.8M

67% less funds holding in top 10

Funds holding in top 10: 3 → 1 (-2)

Holders
252
Holders Change
-18
Holders Change %
-6.67%
% of All Funds
3.38%
Holding in Top 10
1
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-66.67%
% of All Funds
0.01%
New
39
Increased
101
Reduced
72
Closed
54
Calls
$12.3M
Puts
$20.8M
Net Calls
-$8.55M
Net Calls Change
-$3.42M

Top Buyers

1
Grantham, Mayo, Van Otterloo & Co (GMO)
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
+$21.4M
2
EPIM
Equinox Partners Investment Management
Connecticut
+$20.6M
3
Bank of America
Bank of America
North Carolina
+$18.7M
4
BlackRock
BlackRock
New York
+$18.1M
5
OAM
Ostrum Asset Management
France
+$11.8M

Top Sellers

1
VNIM
Vaughan Nelson Investment Management
Texas
-$48.3M
2
ECA
Encompass Capital Advisors
New York
-$35.7M
3
Natixis Advisors
Natixis Advisors
Massachusetts
-$19.5M
4
Jennison Associates
Jennison Associates
New York
-$15.7M
5
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$11.4M
Name Holding Trade Value Shares
Change 		Change in
Stake
BlackRock
1
BlackRock
New York
$143M +$18.1M +6,141,878 +11%
Grantham, Mayo, Van Otterloo & Co (GMO)
2
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
$90.9M +$21.4M +7,260,261 +22%
American Century Companies
3
American Century Companies
Missouri
$66.7M -$947K -320,873 -1%
Hotchkis & Wiley Capital Management
4
Hotchkis & Wiley Capital Management
California
$58.2M +$6.23M +2,110,306 +9%
State Street
5
State Street
Massachusetts
$44.7M +$1.55M +523,720 +3%
EPIM
6
Equinox Partners Investment Management
Connecticut
$41.9M +$20.6M +6,969,385 +61%
PCM
7
Patient Capital Management
Maryland
$41.1M +$2.53M +857,058 +5%
William Blair Investment Management
8
William Blair Investment Management
Illinois
$39.1M -$4.65M -1,574,723 -8%
Vanguard Group
9
Vanguard Group
Pennsylvania
$32.1M -$2.36M -799,231 -5%
Dimensional Fund Advisors
10
Dimensional Fund Advisors
Texas
$28.2M +$2.13M +722,704 +6%
Invesco
11
Invesco
Georgia
$24.8M +$9.23M +3,127,003 +40%
Geode Capital Management
12
Geode Capital Management
Massachusetts
$24.7M +$922K +312,612 +3%
Bank of America
13
Bank of America
North Carolina
$22.2M +$18.7M +6,346,079 +186%
Morgan Stanley
14
Morgan Stanley
New York
$20.2M +$6.58M +2,231,449 +34%
Charles Schwab
15
Charles Schwab
California
$17.7M +$2.41M +815,582 +12%
Fidelity Investments
16
Fidelity Investments
Massachusetts
$17.7M +$10M +3,400,512 +78%
BNP Paribas Asset Management
17
BNP Paribas Asset Management
France
$13.9M +$1.81M +612,669 +11%
MGP
18
M&G plc
United Kingdom
$13.7M +$1.91M +648,111 +10%
Russell Investments Group
19
Russell Investments Group
United Kingdom
$12.1M +$3.32M +1,125,724 +27%
Citadel Advisors
20
Citadel Advisors
Florida
$11.4M +$5.17M +1,753,101 +54%
Northern Trust
21
Northern Trust
Illinois
$9.96M -$528K -179,053 -4%
Goldman Sachs
22
Goldman Sachs
New York
$9.76M -$1.68M -568,020 -12%
UBS Group
23
UBS Group
Switzerland
$9.7M +$306K +103,759 +3%
OAM
24
Ostrum Asset Management
France
$9.14M +$11.8M +4,008,525 New
VNIM
25
Vaughan Nelson Investment Management
Texas
$9.14M -$48.3M -16,386,674 -80%
1
2 3 4 5

KOS Hedge Fund Activity: Q1 2025 in Review

252 of the 7,457 institutional investors tracked by Wall St. Rank reported a position in Kosmos Energy (KOS) for Q1 2025, worth a combined $991M — down 33% from $1.48B a quarter earlier.

Sellers outnumbered buyers: 54 funds closed out of KOS and 39 opened new positions — a net loss of 15 holders — while 72 trimmed existing stakes and 101 added.

The largest buyer was Grantham, Mayo, Van Otterloo & Co (GMO), adding an estimated $21.4M. The largest seller was Vaughan Nelson Investment Management, cutting an estimated $48.3M.

  • 252 institutional investors held Kosmos Energy (KOS) as of Q1 2025, down from 270 in Q4 2024.
  • Funds reported $991M of Kosmos Energy stock for Q1 2025, down 33% quarter-over-quarter.
  • 39 funds opened new Kosmos Energy positions in Q1 2025 and 54 closed out, a net change of -15 holders.
  • The largest Kosmos Energy buyer in Q1 2025 was Grantham, Mayo, Van Otterloo & Co (GMO), an estimated $21.4M added.
  • The largest Kosmos Energy seller in Q1 2025 was Vaughan Nelson Investment Management, an estimated $48.3M sold.

Based on aggregated 13F filings for Q1 2025.