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JANE STREET GROUP, LLC

Position in KOS — Kosmos Energy Ltd.

CIK 1595888 NEW YORK, NY

Position in KOS

as of Mar 31, 2026 · filed May 12, 2026
Position Value
$32,645,859
+$24,210,385 QoQ
Shares Held
11,743,115
+26.7% QoQ
Ownership
1.98%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in KOS Over Time

Shares Held

Position Value (USD)

Derivatives in KOS

reported options exposure · as of Mar 31, 2026
CallValue
$1,064,462
CallShares
382,900
PutValue
$469,820
PutShares
169,000

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Oil & Gas E&P

Energy · as of Mar 31, 2026

JANE STREET GROUP, LLC holds $1,136,429,629 across 59 Oil & Gas E&P names. KOS ranks #8 (2.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
8 KOS
Kosmos Energy Ltd.
This page
11,743,115 $32,645,859

All Filings in KOS

Export CSV
45 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $1,064,462 382,900
2026-03-31 $469,820 169,000
2026-03-31 $32,645,859 11,743,115
2025-12-31 $8,435,474 9,269,753
2025-12-31 $187,096 205,600
2025-09-30 $2,892,873 1,742,695
2025-09-30 $46,978 28,300
2025-09-30 $62,250 37,500
2025-06-30 $38,184 22,200
2025-06-30 $2,738,562 1,592,188
2025-06-30 $28,724 16,700
2025-03-31 $45,372 19,900
2025-03-31 $741,945 325,415
2025-03-31 $1,224,360 537,000
2024-12-31 $2,249,971 657,887
2024-12-31 $50,616 14,800
2024-12-31 $166,212 48,600
2024-09-30 $55,614 13,800
2024-09-30 $1,354,800 336,179
2024-09-30 $41,509 10,300
2024-06-30 $6,244,520 1,127,170
2024-03-31 $2,719,362 456,269
2023-12-31 $2,818,064 419,980
2023-09-30 $1,768,540 216,203
2023-06-30 $1,675,474 279,712
2023-03-31 $959,179 128,922
2022-12-31 $3,222,877 506,742
2022-09-30 $5,801,085 1,122,067
2022-06-30 $2,108,331 340,603
2022-03-31 $436,433 60,700
2022-03-31 $542,233 75,415
2022-03-31 $3,352,697 466,300
2021-12-31 $493,323 142,579
2021-12-31 $758,778 219,300
2021-12-31 $171,616 49,600
2021-09-30 $583,090 196,990
2021-09-30 $119,584 40,400
2021-09-30 $361,416 122,100
2021-06-30 $169,886 49,100
2021-06-30 $1,116,753 322,761
2021-03-31 $535,239 174,345
2020-12-31 $638,039 271,506
2020-09-30 $139,144 141,985
2020-06-30 $1,617,408 974,343
2020-03-31 $158,497 176,109