Gulfport Energy Corporation
DE ˙ DB ˙ US4026355028
147,00 € ↑2,00 (1,38%)
2026-06-05
DEL PRIS
SecurityDE:G2U0 / Gulfport Energy Corporation
InstitutionCitigroup Inc
Latest Disclosed Ownership14,273 shares
Latest Disclosed Value $ 3,019,738
Citigroup Inc ownership in G2U0 / Gulfport Energy Corporation

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 14,273 shares of Gulfport Energy Corporation (DE:G2U0) valued at $2,669,051 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,765 shares of Gulfport Energy Corporation. This represents a change in shares of 416.20% during the quarter. The current value of the position is $2,098,131 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (G2U0) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put 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.

DE:G2U0 / Gulfport Energy Corporation 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)
2026-05-11 2026-03-31 13F GULFPORT ENERGY COMMON SHARES 402635502 14,273 11,508 416.20 3,020 425.04 0.0006
2026-02-13 2025-12-31 13F GULFPORT ENERGY COMMON SHARES 402635502 2,765 -4,023 -59.27 575 -53.18 0.0003
2025-11-10 2025-09-30 13F GULFPORT ENERGY COMMON SHARES 402635502 6,788 -4,073 -37.50 1,228 -43.77 0.0005
2025-08-11 2025-06-30 13F GULFPORT ENERGY COMMON SHARES 402635502 10,861 -13,472 -55.37 2,185 -51.25 0.0011
2025-05-12 2025-03-31 13F GULFPORT ENERGY COMMON SHARES 402635502 24,333 4,812 24.65 4,481 24.62 0.0023
2025-02-12 2024-12-31 13F GULFPORT ENERGY COMMON SHARES 402635502 19,521 644 3.41 3,596 25.83 0.0021
2024-11-12 2024-09-30 13F GULFPORT ENERGY OPERATING COMMON SHARES 402635502 18,877 -13,093 -40.95 2,857 -40.81 0.0017
2024-08-12 2024-06-30 13F GULFPORT ENERGY COMMON SHARES 402635502 31,970 11,885 59.17 4,827 50.09 0.0031
2024-05-10 2024-03-31 13F GULFPORT ENERGY COMMON SHARES 402635502 20,085 6,837 51.61 3,216 82.31 0.0021
2024-02-09 2023-12-31 13F GULFPORT ENERGY COMMON SHARES 402635502 13,248 1,331 11.17 1,765 24.75 0.0012
2023-12-06 2023-09-30 13F/A-1 GULFPORT ENERGY COMMON SHARES 402635502 11,917 -1,132 -8.67 1,414 3.14 0.0011
2023-11-09 2023-09-30 13F GULFPORT ENERGY COMMON SHARES 402635502 11,917 -1,132 1,414 0.0011
2023-08-10 2023-06-30 13F GULFPORT ENERGY COMMON SHARES 402635502 13,049 1,100 9.21 1,371 43.56 0.0009
2023-05-11 2023-03-31 13F GULFPORT ENERGY COMMON SHARES 402635502 11,949 -7,369 -38.15 956 -32.84 0.0007
2023-02-09 2022-12-31 13F GULFPORT ENERGY COMMON SHARES 402635502 19,318 -675 -3.38 1,423 -19.43 0.0011
2022-11-10 2022-09-30 13F GULFPORT ENERGY COMMON SHARES 402635502 19,993 4,070 25.56 1,765 39.42 0.0013
2022-08-10 2022-06-30 13F GULFPORT ENERGY COMMON SHARES 402635502 15,923 -25,172 -61.25 1,266 -65.70 0.0009
2022-05-12 2022-03-31 13F GULFPORT ENERGY COMMON SHARES 402635502 41,095 18,317 80.42 3,691 124.92 0.0022
2022-02-10 2021-12-31 13F GULFPORT ENERGY COMMON SHARES 402635502 22,778 21,278 1,418.53 1,641 1,234.15 0.0009
2021-11-10 2021-09-30 13F GULFPORT ENERGY COMMON SHARES 402635502 1,500 1,500 123 0.0001
2021-02-11 2020-12-31 13F GULFPORT ENERGY COM NEW 402635304 0 -19,279 -100.00 0 -100.00
2020-11-12 2020-09-30 13F GULFPORT ENERGY COM NEW 402635304 19,279 -54,318 -73.80 10 -87.50 0.0000
2020-08-12 2020-06-30 13F GULFPORT ENERGY COM NEW 402635304 73,597 15,190 26.01 80 207.69 0.0001
2020-05-12 2020-03-31 13F GULFPORT ENERGY COM NEW 402635304 58,407 -320,145 -84.57 26 -97.74 0.0000
2020-02-12 2019-12-31 13F GULFPORT ENERGY COM NEW 402635304 378,552 85,421 29.14 1,150 44.84 0.0008
2019-11-08 2019-09-30 13F GULFPORT ENERGY COM NEW 402635304 293,131 -492,638 -62.70 794 -79.42 0.0006
2019-08-12 2019-06-30 13F GULFPORT ENERGY COM NEW 402635304 785,769 225,117 40.15 3,858 -14.19 0.0031
2019-05-13 2019-03-31 13F GULFPORT ENERGY COM NEW 402635304 560,652 24,781 4.62 4,496 28.05 0.0043
2019-02-12 2018-12-31 13F GULFPORT ENERGY COM NEW 402635304 535,871 454,174 555.92 3,511 312.57 0.0036
2018-11-13 2018-09-30 13F GULFPORT ENERGY COM NEW 402635304 81,697 16,527 25.36 851 3.91 0.0008
2018-08-10 2018-06-30 13F GULFPORT ENERGY COM NEW 402635304 65,170 32,485 99.39 819 158.36 0.0008
2018-05-11 2018-03-31 13F GULFPORT ENERGY COM NEW 402635304 32,685 -799 -2.39 317 -25.76 0.0003
2018-02-12 2017-12-31 13F GULFPORT ENERGY COM NEW 402635304 33,484 -1,429 -4.09 427 -14.60 0.0003
2017-11-13 2017-09-30 13F GULFPORT ENERGY COM NEW 402635304 34,913 1,777 5.36 500 2.46 0.0004
2017-08-11 2017-06-30 13F GULFPORT ENERGY COM NEW 402635304 33,136 -16,396 -33.10 488 -42.66 0.0004
2017-05-12 2017-03-31 13F GULFPORT ENERGY COM NEW 402635304 49,532 5,573 12.68 851 -10.52 0.0008
2017-02-10 2016-12-31 13F GULFPORT ENERGY COM NEW 402635304 43,959 -223,071 -83.54 951 -87.39 0.0009
2016-11-10 2016-09-30 13F GULFPORT ENERGY COM NEW 402635304 267,030 3,365 1.28 7,543 -8.49 0.0070
2016-08-12 2016-06-30 13F GULFPORT ENERGY COM NEW 402635304 263,665 -485,299 -64.80 8,243 -61.17 0.0084
2016-05-13 2016-03-31 13F GULFPORT ENERGY COM NEW 402635304 748,964 -2,530,866 -77.16 21,226 -73.66 0.0238
2016-02-12 2015-12-31 13F GULFPORT ENERGY COM NEW 402635304 3,279,830 1,640,564 100.08 80,586 65.63 0.0803
2015-11-13 2015-09-30 13F GULFPORT ENERGY COM NEW 402635304 1,639,266 1,506,660 1,136.19 48,653 811.62 0.0455
2015-08-13 2015-06-30 13F GULFPORT ENERGY COM NEW 402635304 132,606 35,712 36.86 5,337 19.96 0.0047
2015-05-14 2015-03-31 13F GULFPORT ENERGY COM NEW 402635304 96,894 69,220 250.13 4,449 285.19 0.0043
2015-02-17 2014-12-31 13F GULFPORT ENERGY COM NEW 402635304 27,674 -149,158 -84.35 1,155 -87.77 0.0010
2014-11-14 2014-09-30 13F GULFPORT ENERGY COM NEW 402635304 176,832 69,310 64.46 9,443 39.83 0.0083
2014-08-14 2014-06-30 13F GULFPORT ENERGY COM NEW 402635304 107,522 101,167 1,591.93 6,753 1,394.03 0.0065
2014-05-15 2014-03-31 13F GULFPORT ENERGY COM NEW 402635304 6,355 -30,476 -82.75 452 -80.57 0.0005
2014-02-14 2013-12-31 13F GULFPORT ENERGY COM NEW 402635304 36,831 29,814 424.88 2,326 415.74 0.0021
2013-11-14 2013-09-30 13F GULFPORT ENERGY COM NEW 402635304 7,017 -50,930 -87.89 451 -83.46 0.0004
2013-08-14 2013-06-30 13F GULFPORT ENERGY COM NEW 402635304 57,947 57,947 2,727 0.0027
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
(%)
2021-02-11 2020-12-31 13F GULFPORT ENERGY COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-11-12 2020-09-30 13F GULFPORT ENERGY COM NEW Call 14,200 -2.74 7 -56.25 n/a n/a n/a
2020-08-12 2020-06-30 13F GULFPORT ENERGY COM NEW Call 14,600 -51.17 16 23.08 n/a n/a n/a
2020-05-12 2020-03-31 13F GULFPORT ENERGY COM NEW Call 29,900 37.79 13 -80.30 n/a n/a n/a
2020-02-12 2019-12-31 13F GULFPORT ENERGY COM NEW Call 21,700 -36.55 66 -29.03 n/a n/a n/a
2019-11-08 2019-09-30 13F GULFPORT ENERGY COM NEW Call 34,200 5.56 93 -41.51 n/a n/a n/a
2019-08-12 2019-06-30 13F GULFPORT ENERGY COM NEW Call 32,400 63.64 159 0.00 n/a n/a n/a
2019-05-13 2019-03-31 13F GULFPORT ENERGY COM NEW Call 19,800 -21.43 159 -3.64 n/a n/a n/a
2019-02-12 2018-12-31 13F GULFPORT ENERGY COM NEW Call 25,200 27.27 165 -19.90 n/a n/a n/a
2018-11-13 2018-09-30 13F GULFPORT ENERGY COM NEW Call 19,800 -65.02 206 -71.03 n/a n/a n/a
2018-08-10 2018-06-30 13F GULFPORT ENERGY COM NEW Call 56,600 105.07 711 167.29 n/a n/a n/a
2018-05-11 2018-03-31 13F GULFPORT ENERGY COM NEW Call 27,600 -4.83 266 -28.11 n/a n/a n/a
2018-02-12 2017-12-31 13F GULFPORT ENERGY COM NEW Call 29,000 135.77 370 110.23 n/a n/a n/a
2017-11-13 2017-09-30 13F GULFPORT ENERGY COM NEW Call 12,300 -10.22 176 -12.87 n/a n/a n/a
2017-08-11 2017-06-30 13F GULFPORT ENERGY COM NEW Call 13,700 -42.68 202 -50.85 n/a n/a n/a
2017-05-12 2017-03-31 13F GULFPORT ENERGY COM NEW Call 23,900 159.78 411 106.53 n/a n/a n/a
2017-02-10 2016-12-31 13F GULFPORT ENERGY COM NEW Call 9,200 9,100.00 199 6,533.33 n/a n/a n/a
2016-11-10 2016-09-30 13F GULFPORT ENERGY COM NEW Call 100 0.00 3 0.00 n/a n/a n/a
2016-08-12 2016-06-30 13F GULFPORT ENERGY COM NEW Call 100 -99.73 3 -99.72 n/a n/a n/a
2016-05-13 2016-03-31 13F GULFPORT ENERGY COM NEW Call 37,200 24.00 1,054 43.01 n/a n/a n/a
2016-02-12 2015-12-31 13F GULFPORT ENERGY COM NEW Call 30,000 737 n/a n/a n/a
2015-11-13 2015-09-30 13F GULFPORT ENERGY COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-08-13 2015-06-30 13F GULFPORT ENERGY COM NEW Call 20,200 813 n/a n/a n/a
2015-05-14 2015-03-31 13F GULFPORT ENERGY COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-02-17 2014-12-31 13F GULFPORT ENERGY COM NEW Call 337,300 -77.51 14,079 -82.42 n/a n/a n/a
2014-11-14 2014-09-30 13F GULFPORT ENERGY COM NEW Call 1,500,000 80,100 n/a n/a n/a
2014-08-14 2014-06-30 13F GULFPORT ENERGY COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-05-15 2014-03-31 13F GULFPORT ENERGY COM NEW Call 297,400 643.50 21,169 738.04 n/a n/a n/a
2014-02-14 2013-12-31 13F GULFPORT ENERGY COM NEW Call 40,000 -81.66 2,526 -82.00 n/a n/a n/a
2013-11-14 2013-09-30 13F GULFPORT ENERGY COM NEW Call 218,100 14,033 n/a n/a n/a
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
(%)
2021-02-11 2020-12-31 13F GULFPORT ENERGY COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-11-12 2020-09-30 13F GULFPORT ENERGY COM NEW Put 8,400 -27.59 4 -69.23 n/a n/a n/a
2020-08-12 2020-06-30 13F GULFPORT ENERGY COM NEW Put 11,600 -8.66 13 116.67 n/a n/a n/a
2020-05-12 2020-03-31 13F GULFPORT ENERGY COM NEW Put 12,700 -13.61 6 -86.67 n/a n/a n/a
2020-02-12 2019-12-31 13F GULFPORT ENERGY COM NEW Put 14,700 -51.16 45 -45.12 n/a n/a n/a
2019-11-08 2019-09-30 13F GULFPORT ENERGY COM NEW Put 30,100 78.11 82 -1.20 n/a n/a n/a
2019-08-12 2019-06-30 13F GULFPORT ENERGY COM NEW Put 16,900 322.50 83 159.38 n/a n/a n/a
2019-05-13 2019-03-31 13F GULFPORT ENERGY COM NEW Put 4,000 -36.51 32 -21.95 n/a n/a n/a
2019-02-12 2018-12-31 13F GULFPORT ENERGY COM NEW Put 6,300 -28.41 41 -55.43 n/a n/a n/a
2018-11-13 2018-09-30 13F GULFPORT ENERGY COM NEW Put 8,800 -46.34 92 -55.34 n/a n/a n/a
2018-08-10 2018-06-30 13F GULFPORT ENERGY COM NEW Put 16,400 530.77 206 724.00 n/a n/a n/a
2018-05-11 2018-03-31 13F GULFPORT ENERGY COM NEW Put 2,600 -80.60 25 -85.38 n/a n/a n/a
2018-02-12 2017-12-31 13F GULFPORT ENERGY COM NEW Put 13,400 50.56 171 33.59 n/a n/a n/a
2017-11-13 2017-09-30 13F GULFPORT ENERGY COM NEW Put 8,900 -28.80 128 -30.43 n/a n/a n/a
2017-08-11 2017-06-30 13F GULFPORT ENERGY COM NEW Put 12,500 52.44 184 30.50 n/a n/a n/a
2017-05-12 2017-03-31 13F GULFPORT ENERGY COM NEW Put 8,200 2.50 141 -18.50 n/a n/a n/a
2017-02-10 2016-12-31 13F GULFPORT ENERGY COM NEW Put 8,000 471.43 173 332.50 n/a n/a n/a
2016-11-10 2016-09-30 13F GULFPORT ENERGY COM NEW Put 1,400 -44.00 40 -48.72 n/a n/a n/a
2016-08-12 2016-06-30 13F GULFPORT ENERGY COM NEW Put 2,500 78 n/a n/a n/a
2015-11-13 2015-09-30 13F GULFPORT ENERGY COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-08-13 2015-06-30 13F GULFPORT ENERGY COM NEW Put 100 4 n/a n/a n/a
2015-02-17 2014-12-31 13F GULFPORT ENERGY COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2014-11-14 2014-09-30 13F GULFPORT ENERGY COM NEW Put 46,000 -64.62 2,456 -69.92 n/a n/a n/a
2014-08-14 2014-06-30 13F GULFPORT ENERGY COM NEW Put 130,000 333.33 8,164 282.39 n/a n/a n/a
2014-05-15 2014-03-31 13F GULFPORT ENERGY COM NEW Put 30,000 -80.65 2,135 -78.19 n/a n/a n/a
2014-02-14 2013-12-31 13F GULFPORT ENERGY COM NEW Put 155,000 -16.22 9,788 12.40 n/a n/a n/a
2013-11-14 2013-09-30 13F GULFPORT ENERGY COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2013-08-14 2013-06-30 13F GULFPORT ENERGY COM NEW Put 185,000 8,708 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.