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Kosmos Energy
KOS

235 hedge funds and large institutions have $663M invested in Kosmos Energy in 2025 Q3 according to their latest regulatory filings, with 31 funds opening new positions, 78 increasing their positions, 79 reducing their positions, and 21 closing their positions.

New
Increased
Maintained
Reduced
Closed

48% more first-time investments, than exits

New positions opened: 31 | Existing positions closed: 21

4% more funds holding

Funds holding: 226 → 235 (+9)

0% more funds holding in top 10

Funds holding in top 10: 1 → 1 (0)

1% less repeat investments, than reductions

Existing positions increased: 78 | Existing positions reduced: 79

3.53% less ownership

Funds ownership: 86.66% → 83.13% (-3.5%)

7% less capital invested

Capital invested by funds: $714M → $663M (-$51.6M)

12% less call options, than puts

Call options by funds: $7.06M | Put options by funds: $8M

Holders
235
Holders Change
+9
Holders Change %
+3.98%
% of All Funds
3.08%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
31
Increased
78
Reduced
79
Closed
21
Calls
$7.06M
Puts
$8M
Net Calls
-$940K
Net Calls Change
-$646K

Top Buyers

Rank Fund Capital Flow
1
Millennium Management
Millennium Management
New York
+$15.9M
2
Bank of America
Bank of America
North Carolina
+$6.03M
3
State Street
State Street
Massachusetts
+$5.92M
4
MGP
M&G plc
United Kingdom
+$4.13M
5
Nomura Holdings
Nomura Holdings
Japan
+$3.51M

Top Sellers

Rank Fund Capital Flow
1
PCM
Patient Capital Management
Maryland
-$30M
2
American Century Companies
American Century Companies
Missouri
-$5.68M
3
Goldman Sachs
Goldman Sachs
New York
-$5.63M
4
Squarepoint
Squarepoint
New York
-$5.29M
5
Citadel Advisors
Citadel Advisors
Florida
-$5.28M
Name Holding Trade Value Shares
Change 		Change in
Stake
Fidelity Investments
26
Fidelity Investments
Massachusetts
$5.5M -$210K -112,189 -3%
Wells Fargo
27
Wells Fargo
California
$4.81M +$512K +273,772 +10%
First Eagle Investment Management
28
First Eagle Investment Management
New York
$4.56M +$1.31M +698,740 +34%
Lazard Asset Management
29
Lazard Asset Management
New York
$4.09M +$186K +99,560 +4%
Goldman Sachs
30
Goldman Sachs
New York
$4.08M -$5.63M -3,012,276 -55%
Bank of New York Mellon
31
Bank of New York Mellon
New York
$3.88M +$139K +74,501 +3%
Ameriprise
32
Ameriprise
Minnesota
$3.7M -$728K -389,391 -15%
Barclays
33
Barclays
United Kingdom
$3.42M -$728K -389,017 -16%
Susquehanna International Group
34
Susquehanna International Group
Pennsylvania
$3.37M -$59.4K -31,765 -2%
D.E. Shaw & Co
35
D.E. Shaw & Co
New York
$3.19M +$2.74M +1,464,678 +321%
Nomura Holdings
36
Nomura Holdings
Japan
$3.11M +$3.51M +1,874,673 New
Jane Street
37
Jane Street
New York
$2.89M +$282K +150,507 +9%
Two Sigma Investments
38
Two Sigma Investments
New York
$2.86M +$687K +367,079 +27%
NCM
39
Nantahala Capital Management
Connecticut
$2.85M – – –
BAM
40
Ballast Asset Management
Texas
$2.57M +$349K +186,643 +14%
N
41
Nuveen
North Carolina
$2.25M +$69.3K +37,066 +3%
RBI
42
Raiffeisen Bank International
Austria
$1.67M – – –
Group One Trading
43
Group One Trading
Illinois
$1.62M +$96.2K +51,403 +6%
Raymond James Financial
44
Raymond James Financial
Florida
$1.62M +$27.5K +14,692 +2%
VanEck Associates
45
VanEck Associates
New York
$1.6M +$1.09M +582,223 +152%
Swiss National Bank
46
Swiss National Bank
Switzerland
$1.54M +$23.4K +12,500 +1%
Rafferty Asset Management
47
Rafferty Asset Management
New York
$1.23M +$398K +212,970 +41%
RhumbLine Advisers
48
RhumbLine Advisers
Massachusetts
$1.18M -$20.2K -10,778 -1%
Two Sigma Advisers
49
Two Sigma Advisers
New York
$1.16M +$671K +358,500 +106%
FWIA
50
Fort Washington Investment Advisors
Ohio
$1.12M – – –
1
2
3 4 5

KOS Hedge Fund Activity: Q3 2025 in Review

235 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Kosmos Energy (KOS) for Q3 2025, worth a combined $663M — down 7.2% from $714M a quarter earlier.

Buyers outnumbered sellers: 31 funds opened new KOS positions and 21 closed out — a net gain of 10 holders — while 78 added to existing stakes and 79 trimmed.

The largest buyer was Millennium Management, adding an estimated $15.9M. The largest seller was Patient Capital Management, cutting an estimated $30M.

  • 235 institutional investors held Kosmos Energy (KOS) as of Q3 2025, up from 226 in Q2 2025.
  • Funds reported $663M of Kosmos Energy stock for Q3 2025, down 7.2% quarter-over-quarter.
  • 31 funds opened new Kosmos Energy positions in Q3 2025 and 21 closed out, a net change of +10 holders.
  • The largest Kosmos Energy buyer in Q3 2025 was Millennium Management, an estimated $15.9M added.
  • The largest Kosmos Energy seller in Q3 2025 was Patient Capital Management, an estimated $30M sold.

Based on aggregated 13F filings for Q3 2025.