Kosmos Energy
262 hedge funds and large institutions have $1.21B invested in Kosmos Energy in 2026 Q1 according to their latest regulatory filings, with 87 funds opening new positions, 87 increasing their positions, 59 reducing their positions, and 31 closing their positions.
289% more capital invested
Capital invested by funds: $311M → $1.21B (+$897M)
200% more funds holding in top 10
Funds holding in top 10: 1 → 3 (+2)
181% more first-time investments, than exits
New positions opened: 87 | Existing positions closed: 31
94% more call options, than puts
Call options by funds: $24.7M | Put options by funds: $12.7M
47% more repeat investments, than reductions
Existing positions increased: 87 | Existing positions reduced: 59
25% more funds holding
Funds holding: 210 → 262 (+52)
1.76% more ownership
Funds ownership: 71.42% → 73.18% (+1.8%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Two Sigma Investments
New York
|
+$27.9M |
| 2 |
D.E. Shaw & Co
New York
|
+$27.1M |
| 3 |
Invesco
Atlanta,
Georgia
|
+$17.4M |
| 4 |
DKCM
Davidson Kempner Capital Management
New York
|
+$15.8M |
| 5 |
State Street
Boston,
Massachusetts
|
+$14.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Grantham, Mayo, Van Otterloo & Co (GMO)
Boston,
Massachusetts
|
-$31M |
| 2 |
American Century Companies
Kansas City,
Missouri
|
-$21.1M |
| 3 |
Millennium Management
New York
|
-$4.13M |
| 4 |
MGP
M&G plc
London,
United Kingdom
|
-$3.21M |
| 5 |
UBS Group
Zurich,
Switzerland
|
-$2.49M |
KOS Hedge Fund Activity: Q1 2026 in Review
262 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Kosmos Energy (KOS) for Q1 2026, worth a combined $1.21B — up 289% from $311M a quarter earlier.
Buyers outnumbered sellers: 87 funds opened new KOS positions and 31 closed out — a net gain of 56 holders — while 87 added to existing stakes and 59 trimmed.
The largest buyer was Two Sigma Investments, adding an estimated $27.9M. The largest seller was Grantham, Mayo, Van Otterloo & Co (GMO), cutting an estimated $31M.
- 262 institutional investors held Kosmos Energy (KOS) as of Q1 2026, up from 210 in Q4 2025.
- Funds reported $1.21B of Kosmos Energy stock for Q1 2026, up 289% quarter-over-quarter.
- 87 funds opened new Kosmos Energy positions in Q1 2026 and 31 closed out, a net change of +56 holders.
- The largest Kosmos Energy buyer in Q1 2026 was Two Sigma Investments, an estimated $27.9M added.
- The largest Kosmos Energy seller in Q1 2026 was Grantham, Mayo, Van Otterloo & Co (GMO), an estimated $31M sold.
Based on aggregated 13F filings for Q1 2026.