Kosmos Energy Ltd.
MX ˙ BMV ˙ US5006881065
SecurityMX:KOS / Kosmos Energy Ltd.
InstitutionGoldman Sachs Group Inc
Latest Disclosed Ownership9,261,696 shares
Latest Disclosed Value $ 25,747,514
Goldman Sachs Group Inc ownership in KOS / Kosmos Energy Ltd.

On May 15, 2026 - Goldman Sachs Group Inc filed a 13F-HR form disclosing ownership of 9,261,696 shares of Kosmos Energy Ltd. (MX:KOS) valued at $25,747,514 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 6,766,857 shares of Kosmos Energy Ltd.. This represents a change in shares of 36.87% during the quarter.

Goldman Sachs Group Inc has a history of taking positions in derivatives of the underlying security (KOS) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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)
2026-05-15 2026-03-31 13F KOSMOS ENERGY CMN 500688106 9,261,696 2,494,839 36.87 25,748 319.33 0.0007
2026-02-10 2025-12-31 13F KOSMOS ENERGY CMN 500688106 6,766,857 4,308,275 175.23 6,140 50.45 0.0008
2025-11-14 2025-09-30 13F KOSMOS ENERGY CMN 500688106 2,458,582 -3,012,276 -55.06 4,081 -56.63 0.0005
2025-08-14 2025-06-30 13F KOSMOS ENERGY CMN 500688106 5,470,858 1,190,645 27.82 9,410 -3.58 0.0013
2025-06-27 2025-03-31 13F/A-2 KOSMOS ENERGY CMN 500688106 4,280,213 -568,020 -11.72 9,759 -41.15 0.0016
2025-05-16 2025-03-31 13F/A-1 KOSMOS ENERGY CMN 500688106 4,280,213 -568,020 9,759 0.0016
2025-05-09 2025-03-31 13F KOSMOS ENERGY CMN 500688106 4,280,213 -568,020 9,759 0.0003
2025-02-11 2024-12-31 13F KOSMOS ENERGY CMN 500688106 4,848,233 435,552 9.87 16,581 -6.76 0.0026
2024-11-14 2024-09-30 13F KOSMOS ENERGY CMN 500688106 4,412,681 2,039,611 85.95 17,783 35.27 0.0029
2024-08-13 2024-06-30 13F KOSMOS ENERGY CMN 500688106 2,373,070 -262,482 -9.96 13,147 -16.30 0.0022
2024-05-15 2024-03-31 13F KOSMOS ENERGY CMN 500688106 2,635,552 -565,484 -17.67 15,708 -26.87 0.0028
2024-05-14 2023-12-31 13F/A-2 KOSMOS ENERGY CMN 500688106 3,201,036 769,037 31.62 21,479 7.97 0.0040
2024-03-01 2023-12-31 13F/A-1 KOSMOS ENERGY CMN 500688106 3,201,036 21,479
2024-02-13 2023-12-31 13F KOSMOS ENERGY CMN 500688106 3,201,036 769,037 21,479 0.0039
2024-05-15 2023-09-30 13F/A-1 KOSMOS ENERGY CMN 500688106 2,431,999 477,134 24.41 19,894 69.89 0.0042
2023-11-14 2023-09-30 13F KOSMOS ENERGY CMN 500688106 2,431,999 477,134 19,894 0.0040
2024-05-14 2023-06-30 13F/A-1 KOSMOS ENERGY CMN 500688106 1,954,865 -1,629,465 -45.46 11,710 -56.09 0.0025
2023-08-15 2023-06-30 13F KOSMOS ENERGY CMN 500688106 1,954,865 -1,629,465 11,710 0.0024
2024-05-14 2023-03-31 13F/A-1 KOSMOS ENERGY CMN 500688106 3,584,330 246,060 7.37 26,667 25.60 0.0061
2023-05-11 2023-03-31 13F KOSMOS ENERGY CMN 500688106 3,584,330 246,060 26,667 0.0057
2024-05-14 2022-12-31 13F/A-1 KOSMOS ENERGY CMN 500688106 3,338,270 -3,010,689 -47.42 21,231 66,246.88 0.0052
2023-02-13 2022-12-31 13F KOSMOS ENERGY CMN 500688106 3,338,270 -3,010,689 21,231 0.0048
2024-05-14 2022-09-30 13F/A-1 KOSMOS ENERGY CMN 500688106 6,348,959 3,894,411 158.66 33 113.33 0.0083
2022-11-14 2022-09-30 13F KOSMOS ENERGY CMN 500688106 6,348,959 3,894,411 32,824 0.0076
2024-05-14 2022-06-30 13F/A-2 KOSMOS ENERGY CMN 500688106 2,454,548 -580,086 -19.12 15 -99.93 0.0038
2022-08-18 2022-06-30 13F/A-1 KOSMOS ENERGY CMN 500688106 2,454,548 -580,086 15,194 0.0034
2022-08-15 2022-06-30 13F KOSMOS ENERGY CMN 500688106 2,454,548 -580,086 15,194 0.0034
2022-05-16 2022-03-31 13F KOSMOS ENERGY CMN 500688106 3,034,634 1,212,456 66.54 21,819 246.06 0.0046
2022-02-17 2021-12-31 13F/A-1 KOSMOS ENERGY CMN 500688106 1,822,178 546,051 42.79 6,305 66.93 0.0013
2022-02-14 2021-12-31 13F KOSMOS ENERGY CMN 500688106 1,822,178 546,051 6,305 0.0004
2022-01-20 2021-09-30 13F/A-1 KOSMOS ENERGY CMN 500688106 1,276,127 -241,929 -15.94 3,777 -28.08 0.0008
2021-11-10 2021-09-30 13F KOSMOS ENERGY CMN 500688106 1,276,127 -241,929 3,777 0.0008
2021-08-13 2021-06-30 13F KOSMOS ENERGY CMN 500688106 1,518,056 481,582 46.46 5,252 65.05 0.0012
2021-05-17 2021-03-31 13F KOSMOS ENERGY CMN 500688106 1,036,474 223,430 27.48 3,182 66.51 0.0008
2021-02-12 2020-12-31 13F KOSMOS ENERGY CMN 500688106 813,044 122,464 17.73 1,911 183.53 0.0005
2020-11-13 2020-09-30 13F KOSMOS ENERGY CMN 500688106 690,580 -1,720,397 -71.36 674 -83.16 0.0002
2020-08-12 2020-06-30 13F KOSMOS ENERGY CMN 500688106 2,410,977 -1,618,316 -40.16 4,002 10.89 0.0012
2020-05-15 2020-03-31 13F KOSMOS ENERGY CMN 500688106 4,029,293 613,162 17.95 3,609 -81.47 0.0013
2020-02-14 2019-12-31 13F KOSMOS ENERGY CMN 500688106 3,416,131 687,787 25.21 19,472 14.38 0.0050
2019-11-14 2019-09-30 13F KOSMOS ENERGY CMN 500688106 2,728,344 -455,278 -14.30 17,024 -14.72 0.0049
2019-08-14 2019-06-30 13F KOSMOS ENERGY CMN 500688106 3,183,622 -230,745 -6.76 19,962 -6.15 0.0057
2019-05-15 2019-03-31 13F KOSMOS ENERGY CMN 500688106 3,414,367 1,068,007 45.52 21,271 122.73 0.0064
2019-02-14 2018-12-31 13F KOSMOS ENERGY CMN 500688106 2,346,360 657,532 38.93 9,550 -39.52 0.0030
2018-11-14 2018-09-30 13F KOSMOS ENERGY CMN G5315B107 1,688,828 -35,028 -2.03 15,790 10.76 0.0041
2018-08-14 2018-06-30 13F KOSMOS ENERGY CMN G5315B107 1,723,856 -185,196 -9.70 14,256 18.53 0.0039
2018-05-15 2018-03-31 13F KOSMOS ENERGY CMN G5315B107 1,909,052 102,979 5.70 12,027 -2.79 0.0031
2018-02-14 2017-12-31 13F KOSMOS ENERGY CMN G5315B107 1,806,073 63,272 3.63 12,372 -10.82 0.0030
2017-11-14 2017-09-30 13F KOSMOS ENERGY CMN G5315B107 1,742,801 -2,039,824 -53.93 13,873 -42.78 0.0034
2017-08-14 2017-06-30 13F KOSMOS ENERGY CMN G5315B107 3,782,625 99,497 2.70 24,247 -1.15 0.0063
2017-05-18 2017-03-31 13F/A-1 KOSMOS ENERGY CMN G5315B107 3,683,128 2,111,884 134.41 24,529 122.71 0.0067
2017-05-15 2017-03-31 13F KOSMOS ENERGY CMN G5315B107 3,683,128 24,529
2017-02-14 2016-12-31 13F KOSMOS ENERGY CMN G5315B107 1,571,244 153,567 10.83 11,014 21.21 0.0031
2016-11-14 2016-09-30 13F KOSMOS ENERGY CMN G5315B107 1,417,677 996,057 236.25 9,087 295.43 0.0028
2016-08-15 2016-06-30 13F KOSMOS ENERGY CMN G5315B107 421,620 -631,628 -59.97 2,298 -62.51 0.0008
2016-05-13 2016-03-31 13F KOSMOS ENERGY CMN G5315B107 1,053,248 175,014 19.93 6,130 34.22 0.0020
2016-02-16 2015-12-31 13F KOSMOS ENERGY CMN G5315B107 878,234 378,153 75.62 4,567 63.63 0.0014
2015-11-13 2015-09-30 13F KOSMOS ENERGY CMN G5315B107 500,081 339,666 211.74 2,791 106.43 0.0009
2015-08-14 2015-06-30 13F KOSMOS ENERGY CMN G5315B107 160,415 -401,231 -71.44 1,352 -69.57 0.0004
2015-05-15 2015-03-31 13F KOSMOS ENERGY CMN G5315B107 561,646 202,617 56.43 4,443 47.51 0.0014
2015-02-13 2014-12-31 13F KOSMOS ENERGY CMN G5315B107 359,029 144,244 67.16 3,012 40.81 0.0010
2014-11-14 2014-09-30 13F KOSMOS ENERGY CMN G5315B107 214,785 -488,875 -69.48 2,139 -72.93 0.0007
2014-08-14 2014-06-30 13F KOSMOS ENERGY CMN G5315B107 703,660 573,170 439.24 7,902 450.66 0.0025
2014-05-15 2014-03-31 13F KOSMOS ENERGY CMN G5315B107 130,490 81,100 164.20 1,435 159.96 0.0005
2014-02-14 2013-12-31 13F KOSMOS ENERGY CMN G5315B107 49,390 21,887 79.58 552 95.05 0.0002
2013-11-14 2013-09-30 13F KOSMOS ENERGY CMN G5315B107 27,503 -70,784 -72.02 283 -71.67 0.0001
2013-08-14 2013-06-30 13F KOSMOS ENERGY CMN G5315B107 98,287 32,650 49.74 999 23.18 0.0004
2013-06-14 2012-12-31 13F/A-1 KOSMOS ENERGY CMN G5315B107 65,637 65,637 811 0.0003
2013-06-14 2012-09-30 13F/A-2 KOSMOS ENERGY CMN G5315B107 0 -29,670 -100.00 0 -100.00
2013-06-14 2012-06-30 13F/A-2 KOSMOS ENERGY CMN G5315B107 29,670 29,670 328 0.0001
Disclosed Call 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
(%)
2017-02-14 2016-12-31 13F KOSMOS ENERGY CMN Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-11-14 2016-09-30 13F KOSMOS ENERGY CMN Call 135,000 0.00 865 17.53 n/a n/a n/a
2016-08-15 2016-06-30 13F KOSMOS ENERGY CMN Call 135,000 736 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.