Kosmos Energy Ltd.
US ˙ NYSE ˙ US5006881065

SecurityKOS / Kosmos Energy Ltd.
InstitutionProShare Advisors LLC
Latest Disclosed Ownership68,776 shares
Latest Disclosed Value $ 191,197
ProShare Advisors LLC reports 20.69% decrease in ownership of KOS / Kosmos Energy Ltd.

On April 24, 2026 - ProShare Advisors LLC filed a 13F-HR form disclosing ownership of 68,776 shares of Kosmos Energy Ltd. (US:KOS) valued at $191,197 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 86,720 shares of Kosmos Energy Ltd.. This represents a change in shares of -20.69% during the quarter. The current value of the position is $205,640 USD.

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)
2026-04-24 2026-03-31 13F KOSMOS ENERGY COM 500688106 68,776 -17,944 -20.69 191 144.87 0.0003
2026-02-06 2025-12-31 13F KOSMOS ENERGY COM 500688106 86,720 5,583 6.88 79 -41.79 0.0001
2025-11-06 2025-09-30 13F KOSMOS ENERGY COM 500688106 81,137 -16,165 -16.61 135 -19.76 0.0003
2025-08-07 2025-06-30 13F KOSMOS ENERGY COM 500688106 97,302 -3,982 -3.93 167 -27.39 0.0003
2025-05-08 2025-03-31 13F KOSMOS ENERGY COM 500688106 101,284 -30,478 -23.13 231 -48.89 0.0005
2025-02-14 2024-12-31 13F KOSMOS ENERGY COM 500688106 131,762 43,353 49.04 451 26.40 0.0010
2024-11-14 2024-09-30 13F KOSMOS ENERGY COM 500688106 88,409 27,220 44.49 356 5.33 0.0009
2024-08-13 2024-06-30 13F KOSMOS ENERGY COM 500688106 61,189 -20,887 -25.45 339 -30.88 0.0009
2024-05-08 2024-03-31 13F KOSMOS ENERGY COM 500688106 82,076 6,459 8.54 489 -3.55 0.0013
2024-02-14 2023-12-31 13F KOSMOS ENERGY COM 500688106 75,617 16,295 27.47 507 4.54 0.0016
2023-11-13 2023-09-30 13F KOSMOS ENERGY COM 500688106 59,322 -92 -0.15 485 36.62 0.0015
2023-08-10 2023-06-30 13F KOSMOS ENERGY COM 500688106 59,414 6,267 11.79 356 -10.13 0.0010
2023-05-26 2023-03-31 13F/A-1 KOSMOS ENERGY COM 500688106 53,147 -4,957 -8.53 395 7.05 0.0012
2023-05-12 2023-03-31 13F KOSMOS ENERGY COM 500688106 53,147 -4,957 395 0.0013
2023-02-02 2022-12-31 13F KOSMOS ENERGY COM 500688106 58,104 8,325 16.72 370 43.02 0.0013
2022-11-07 2022-09-30 13F KOSMOS ENERGY COM 500688106 49,779 -950 -1.87 258 -17.57 0.0010
2022-08-01 2022-06-30 13F KOSMOS ENERGY COM 500688106 50,729 -33,414 -39.71 313 -48.26 0.0010
2022-05-10 2022-03-31 13F KOSMOS ENERGY COM 500688106 84,143 -13,890 -14.17 605 78.47 0.0013
2022-02-08 2021-12-31 13F KOSMOS ENERGY COM 500688106 98,033 46,102 88.78 339 120.13 0.0007
2021-11-12 2021-09-30 13F KOSMOS ENERGY COM 500688106 51,931 -53,198 -50.60 154 -57.69 0.0004
2021-08-13 2021-06-30 13F KOSMOS ENERGY COM 500688106 105,129 -2,609 -2.42 364 9.97 0.0011
2021-05-14 2021-03-31 13F KOSMOS ENERGY COM 500688106 107,738 18,424 20.63 331 57.62 0.0010
2021-02-09 2020-12-31 13F KOSMOS ENERGY COM 500688106 89,314 39,892 80.72 210 337.50 0.0008
2020-11-13 2020-09-30 13F KOSMOS ENERGY COM 500688106 49,422 -5,371 -9.80 48 -47.25 0.0002
2020-08-03 2020-06-30 13F KOSMOS ENERGY COM 500688106 54,793 54,793 91 0.0005
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.