Kosmos Energy Ltd.
MX ˙ BMV ˙ US5006881065
SecurityMX:KOS / Kosmos Energy Ltd.
InstitutionTwo Sigma Securities, Llc
Latest Disclosed Ownership121,918 shares
Latest Disclosed Value $ 338,932
Two Sigma Securities, Llc reports 52.64% increase in ownership of KOS / Kosmos Energy Ltd.

On May 15, 2026 - Two Sigma Securities, Llc filed a 13F-HR form disclosing ownership of 121,918 shares of Kosmos Energy Ltd. (MX:KOS) valued at $338,932 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 79,871 shares of Kosmos Energy Ltd.. This represents a change in shares of 52.64% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F KOSMOS ENERGY COM 500688106 121,918 42,047 52.64 339 369.44 0.0394
2026-02-17 2025-12-31 13F KOSMOS ENERGY COM 500688106 79,871 -33,419 -29.50 72 -61.70 0.0100
2025-11-14 2025-09-30 13F KOSMOS ENERGY COM 500688106 113,290 113,290 188 0.0277
2025-08-14 2025-06-30 13F KOSMOS ENERGY COM 500688106 0 -139,691 -100.00 0 -100.00
2025-05-15 2025-03-31 13F KOSMOS ENERGY COM 500688106 139,691 84,102 151.29 318 67.37 0.0483
2025-02-14 2024-12-31 13F KOSMOS ENERGY COM 500688106 55,589 -12,452 -18.30 190 -30.66 0.0252
2024-11-14 2024-09-30 13F KOSMOS ENERGY COM 500688106 68,041 68,041 274 0.0046
2024-05-15 2024-03-31 13F KOSMOS ENERGY COM 500688106 0 -74,583 -100.00 0 -100.00
2024-02-14 2023-12-31 13F KOSMOS ENERGY COM 500688106 74,583 49,150 193.25 500 140.38 0.0048
2023-11-14 2023-09-30 13F KOSMOS ENERGY COM 500688106 25,433 7,255 39.91 208 92.59 0.0022
2023-08-14 2023-06-30 13F KOSMOS ENERGY COM 500688106 18,178 18,178 109 0.0016
2023-02-14 2022-12-31 13F KOSMOS ENERGY COM 500688106 0 -37,236 -100.00 0 -100.00
2022-11-14 2022-09-30 13F KOSMOS ENERGY COM 500688106 37,236 22,444 151.73 193 109.78 0.0058
2022-08-15 2022-06-30 13F KOSMOS ENERGY COM 500688106 14,792 14,792 92 0.0033
2022-02-14 2021-12-31 13F KOSMOS ENERGY COM 500688106 0 -41,475 -100.00 0 -100.00
2021-11-15 2021-09-30 13F KOSMOS ENERGY COM 500688106 41,475 41,475 123 0.0036
2021-05-17 2021-03-31 13F KOSMOS ENERGY COM 500688106 0 -20,335 -100.00 0 -100.00
2021-02-16 2020-12-31 13F KOSMOS ENERGY COM 500688106 20,335 20,335 48 0.0011
2020-11-16 2020-09-30 13F KOSMOS ENERGY COM 500688106 0 -50,262 -100.00 0 -100.00
2020-09-10 2020-06-30 13F/A-1 KOSMOS ENERGY COM 500688106 50,262 -20,773 -29.24 83 29.69 0.0019
2020-08-14 2020-06-30 13F KOSMOS ENERGY COM 500688106 50,262 -20,773 83 1,324.5046
2020-05-15 2020-03-31 13F KOSMOS ENERGY COM 500688106 71,035 71,035 64 0.0014
2019-05-15 2019-03-31 13F KOSMOS ENERGY COM 500688106 0 -24,787 -100.00 0 -100.00
2019-02-14 2018-12-31 13F KOSMOS ENERGY COM 500688106 24,787 24,787 101 0.0012
2018-08-14 2018-06-30 13F KOSMOS ENERGY SHS G5315B107 0 -11,903 -100.00 0 -100.00
2018-05-15 2018-03-31 13F KOSMOS ENERGY SHS G5315B107 11,903 11,903 75 0.0004
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.