Kosmos Energy Ltd.
MX ˙ BMV ˙ US5006881065
SecurityMX:KOS / Kosmos Energy Ltd.
InstitutionBarclays Plc
Latest Disclosed Ownership2,048,284 shares
Latest Disclosed Value $ 1,858,613
Barclays Plc ownership in KOS / Kosmos Energy Ltd.

On February 13, 2026 - Barclays Plc filed a 13F-HR form disclosing ownership of 2,048,284 shares of Kosmos Energy Ltd. (MX:KOS) valued at $1,858,613 USD as of December 31, 2025. The entity filed a previous 13F-HR/A on March 31, 2026 disclosing 2,061,912 shares of Kosmos Energy Ltd.. This represents a change in shares of -0.66% during the quarter.

Barclays Plc has a history of taking positions in derivatives of the underlying security (KOS) in the form of stock options.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:KOS / Kosmos Energy Ltd. Historical Put/Call Ratio
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)
2026-02-13 2025-12-31 13F KOSMOS ENERGY COM 500688106 2,048,284 -13,628 -0.66 1,859 -45.70 0.0004
2026-03-31 2025-09-30 13F/A-3 KOSMOS ENERGY COM 500688106 2,061,912 -389,017 -15.87 3,423 -18.81 0.0007
2026-03-19 2025-09-30 13F/A-2 KOSMOS ENERGY COM 500688106 3,032,782 581,853 12,222 0.0032
2025-11-12 2025-09-30 13F KOSMOS ENERGY COM 500688106 2,061,912 -389,017 3,423 0.0007
2026-02-27 2025-06-30 13F/A-2 KOSMOS ENERGY COM 500688106 2,450,929 -77,773 -3.08 4,216 -26.89 0.0010
2025-08-14 2025-06-30 13F/A-1 KOSMOS ENERGY COM 500688106 2,450,929 -77,773 4 0.0010
2025-08-13 2025-06-30 13F KOSMOS ENERGY COM 500688106 2,450,929 -77,773 4 0.0003
2026-03-17 2025-03-31 13F/A-1 KOSMOS ENERGY COM 500688106 2,528,702 -3,082,511 -54.93 5,765 -69.96 0.0016
2025-05-15 2025-03-31 13F KOSMOS ENERGY COM 500688106 2,528,702 -3,082,511 6 0.0016
2026-03-19 2024-12-31 13F/A-1 KOSMOS ENERGY COM 500688106 5,611,213 2,578,431 85.02 19,190 57.01 0.0054
2025-02-13 2024-12-31 13F KOSMOS ENERGY COM 500688106 5,611,213 2,578,431 19 0.0054
2026-03-31 2024-09-30 13F/A-2 KOSMOS ENERGY COM 500688106 3,032,782 962,057 46.46 12,222 6.55 0.0032
2024-11-19 2024-09-30 13F/A-1 KOSMOS ENERGY COM 500688106 3,032,782 962,057 12 0.0032
2024-11-15 2024-09-30 13F KOSMOS ENERGY COM 500688106 3,032,782 962,057 12 0.0010
2026-03-23 2024-06-30 13F/A-1 KOSMOS ENERGY COM 500688106 2,070,725 1,579,538 321.58 11,472 291.90 0.0035
2024-08-14 2024-06-30 13F KOSMOS ENERGY COM 500688106 2,070,725 1,579,538 11 0.0035
2026-03-24 2024-03-31 13F/A-1 KOSMOS ENERGY COM 500688106 491,187 -281,430 -36.43 2,927 -43.54 0.0010
2024-05-15 2024-03-31 13F KOSMOS ENERGY COM 500688106 491,187 -281,430 3 0.0010
2026-03-25 2023-12-31 13F/A-1 KOSMOS ENERGY COM 500688106 772,617 191,790 33.02 5,184 9.11 0.0019
2024-02-15 2023-12-31 13F KOSMOS ENERGY COM 500688106 772,617 191,790 5 0.0019
2026-03-26 2023-09-30 13F/A-1 KOSMOS ENERGY COM 500688106 580,827 52,712 9.98 4,751 50.21 0.0030
2023-11-07 2023-09-30 13F KOSMOS ENERGY COM 500688106 580,827 52,712 5 0.0030
2026-03-30 2023-06-30 13F/A-2 KOSMOS ENERGY COM 500688106 528,115 85,291 19.26 3,163 -3.98 0.0020
2023-09-20 2023-06-30 13F/A-1 KOSMOS ENERGY COM 500688106 528,115 85,291 3 0.0020
2023-08-03 2023-06-30 13F KOSMOS ENERGY COM 500688106 528,115 85,291 3 0.0020
2026-03-30 2023-03-31 13F/A-1 KOSMOS ENERGY COM 500688106 442,824 -38,745 -8.05 3,295 7.58 0.0015
2023-05-04 2023-03-31 13F KOSMOS ENERGY COM 500688106 442,824 -38,745 3 0.0015
2026-03-30 2022-12-31 13F/A-1 KOSMOS ENERGY COM 500688106 481,569 74,501 18.30 3,063 45.46 0.0014
2023-02-13 2022-12-31 13F KOSMOS ENERGY COM 500688106 481,569 74,501 3 0.0014
2022-11-03 2022-09-30 13F KOSMOS ENERGY COM 500688106 407,068 14,851 3.79 2,105 -13.27 0.0023
2022-08-12 2022-06-30 13F KOSMOS ENERGY COM 500688106 392,217 -11,058 -2.74 2,427 -16.31 0.0015
2022-05-16 2022-03-31 13F KOSMOS ENERGY COM 500688106 403,275 -187,635 -31.75 2,900 41.81 0.0023
2022-02-23 2021-12-31 13F/A-1 KOSMOS ENERGY COM 500688106 590,910 391,460 196.27 2,045 246.61 0.0008
2022-02-14 2021-12-31 13F KOSMOS ENERGY COM 500688106 590,910 391,460 2,045 0.0008
2021-11-09 2021-09-30 13F KOSMOS ENERGY COM 500688106 199,450 65,143 48.50 590 26.88 0.0003
2021-08-13 2021-06-30 13F KOSMOS ENERGY COM 500688106 134,307 -326,237 -70.84 465 -67.11 0.0002
2021-05-13 2021-03-31 13F KOSMOS ENERGY COM 500688106 460,544 296,542 180.82 1,414 266.32 0.0008
2021-02-11 2020-12-31 13F KOSMOS ENERGY COM 500688106 164,002 -387,347 -70.25 386 -28.25 0.0002
2020-11-12 2020-09-30 13F KOSMOS ENERGY COM 500688106 551,349 295,694 115.66 538 26.59 0.0003
2020-08-12 2020-06-30 13F KOSMOS ENERGY COM 500688106 255,655 161,941 172.80 425 412.05 0.0003
2020-05-13 2020-03-31 13F KOSMOS ENERGY COM 500688106 93,714 -169,642 -64.42 83 -94.47 0.0001
2020-02-10 2019-12-31 13F KOSMOS ENERGY COM 500688106 263,356 -223,347 -45.89 1,501 -50.58 0.0008
2019-11-15 2019-09-30 13F/A-1 KOSMOS ENERGY COM 500688106 486,703 -929,125 -65.62 3,037 -65.79 0.0019
2019-11-14 2019-09-30 13F KOSMOS ENERGY COM 500688106 486,703 -929,125 3,037 702.1578
2019-08-14 2019-06-30 13F KOSMOS ENERGY COM 500688106 1,415,828 1,344,893 1,895.95 8,877 1,903.84 0.0054
2019-05-15 2019-03-31 13F KOSMOS ENERGY COM 500688106 70,935 32,215 83.20 443 180.38 0.0003
2019-02-14 2018-12-31 13F KOSMOS ENERGY COM 500688106 38,720 -5,104 -11.65 158 -61.37 0.0001
2018-11-14 2018-09-30 13F KOSMOS ENERGY COM G5315B107 43,824 -70,213 -61.57 409 -56.63 0.0003
2018-08-14 2018-06-30 13F KOSMOS ENERGY COM G5315B107 114,037 51,284 81.72 943 138.13 0.0008
2018-05-15 2018-03-31 13F KOSMOS ENERGY COM G5315B107 62,753 -3,328,795 -98.15 396 -98.30 0.0003
2018-02-14 2017-12-31 13F KOSMOS ENERGY COM G5315B107 3,391,548 -13,356,011 -79.75 23,232 -82.57 0.0190
2017-11-14 2017-09-30 13F KOSMOS ENERGY COM G5315B107 16,747,559 -9,321,889 -35.76 133,310 -20.22 0.1373
2017-08-14 2017-06-30 13F KOSMOS ENERGY COM G5315B107 26,069,448 22,068,051 551.51 167,105 527.06 0.1790
2017-05-15 2017-03-31 13F KOSMOS ENERGY COM G5315B107 4,001,397 3,925,473 5,170.27 26,649 4,909.21 0.0290
2017-02-14 2016-12-31 13F KOSMOS ENERGY COM G5315B107 75,924 73,012 2,507.28 532 2,855.56 0.0006
2016-11-14 2016-09-30 13F KOSMOS ENERGY COM G5315B107 2,912 2,179 297.27 18 350.00 0.0000
2016-08-12 2016-06-30 13F KOSMOS ENERGY COM G5315B107 733 -1,163 -61.34 4 -55.56 0.0000
2016-05-16 2016-03-31 13F KOSMOS ENERGY COM G5315B107 1,896 -745 -28.21 9 -30.77 0.0000
2016-02-12 2015-12-31 13F KOSMOS ENERGY COM G5315B107 2,641 34 1.30 13 0.00 0.0000
2015-11-13 2015-09-30 13F KOSMOS ENERGY COM G5315B107 2,607 -17,396 -86.97 13 -91.82 0.0000
2015-08-14 2015-06-30 13F KOSMOS ENERGY COM G5315B107 20,003 7,263 57.01 159 78.65 0.0002
2015-05-19 2015-03-31 13F/A-1 KOSMOS ENERGY COM G5315B107 12,740 -24,873 -66.13 89 -70.33 0.0001
2015-05-14 2015-03-31 13F KOSMOS ENERGY COM G5315B107 12,740 89
2015-02-13 2014-12-31 13F KOSMOS ENERGY COM G5315B107 37,613 31,216 487.98 300 417.24 0.0003
2014-11-14 2014-09-30 13F KOSMOS ENERGY COM G5315B107 6,397 -301 -4.49 58 -21.62 0.0001
2014-08-14 2014-06-30 13F KOSMOS ENERGY COM G5315B107 6,698 -18,686 -73.61 74 -73.48 0.0001
2014-05-15 2014-03-31 13F KOSMOS ENERGY COM G5315B107 25,384 -26,454 -51.03 279 -51.05 0.0003
2014-02-13 2013-12-31 13F KOSMOS ENERGY COM G5315B107 51,838 51,838 205.96 570 231.40 0.0006
2013-11-14 2013-09-30 13F KOSMOS ENERGY COM G5315B107 0 -16,943 -100.00 0 -100.00
2013-08-14 2013-06-30 13F KOSMOS ENERGY COM G5315B107 16,943 16,943 172 0.0002
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2020-02-10 2019-12-31 13F KOSMOS ENERGY OPT Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-15 2019-09-30 13F/A KOSMOS ENERGY OPT Put 270,000 0.00 1,685 -0.47 n/a n/a n/a
2019-11-14 2019-09-30 13F KOSMOS ENERGY OPT Put 270,000 1,685 n/a n/a n/a
2019-08-14 2019-06-30 13F KOSMOS ENERGY OPT Put 270,000 1,693 n/a n/a n/a
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.