NRG Energy, Inc.
US ˙ NYSE ˙ US6293775085

SecurityNRG / NRG Energy, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership983,613 shares
Latest Disclosed Value $ 143,745,226
Citigroup Inc ownership in NRG / NRG Energy, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 983,613 shares of NRG Energy, Inc. (US:NRG) valued at $143,745,204 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 292,321 shares of NRG Energy, Inc.. This represents a change in shares of 236.48% during the quarter. The current value of the position is $131,568,075 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (NRG) 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.

NRG / NRG Energy, Inc. 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 NRG ENERGY COM NEW 629377508 983,613 691,292 236.48 143,745 208.80 0.0309
2026-02-13 2025-12-31 13F NRG ENERGY COM NEW 629377508 292,321 16,127 5.84 46,549 4.07 0.0205
2025-11-10 2025-09-30 13F NRG ENERGY COM NEW 629377508 276,194 -90,776 -24.74 44,730 -24.10 0.0199
2025-08-11 2025-06-30 13F NRG ENERGY COM NEW 629377508 366,970 -88,836 -19.49 58,928 35.43 0.0289
2025-05-12 2025-03-31 13F NRG ENERGY COM NEW 629377508 455,806 345,140 311.88 43,511 335.81 0.0222
2025-02-12 2024-12-31 13F NRG ENERGY COM NEW 629377508 110,666 -900,746 -89.06 9,984 -89.16 0.0059
2024-11-12 2024-09-30 13F NRG ENERGY COM NEW 629377508 1,011,412 615,461 155.44 92,140 198.88 0.0534
2024-08-12 2024-06-30 13F NRG ENERGY COM NEW 629377508 395,951 225,317 132.05 30,829 166.91 0.0197
2024-05-10 2024-03-31 13F NRG ENERGY COM NEW 629377508 170,634 35,611 26.37 11,550 65.47 0.0076
2024-02-09 2023-12-31 13F NRG ENERGY COM NEW 629377508 135,023 -289,399 -68.19 6,981 -57.30 0.0049
2023-12-06 2023-09-30 13F/A-1 NRG ENERGY COM NEW 629377508 424,422 -150,541 -26.18 16,349 -23.95 0.0122
2023-11-09 2023-09-30 13F NRG ENERGY COM NEW 629377508 424,422 -150,541 16,349 0.0049
2023-08-10 2023-06-30 13F NRG ENERGY COM NEW 629377508 574,963 -91,724 -13.76 21,498 -5.96 0.0141
2023-05-11 2023-03-31 13F NRG ENERGY COM NEW 629377508 666,687 43,768 7.03 22,861 15.33 0.0160
2023-02-09 2022-12-31 13F NRG ENERGY COM NEW 629377508 622,919 -113,820 -15.45 19,821 -29.70 0.0158
2022-11-10 2022-09-30 13F NRG ENERGY COM NEW 629377508 736,739 -132,630 -15.26 28,195 -15.03 0.0202
2022-08-10 2022-06-30 13F NRG ENERGY COM NEW 629377508 869,369 46,691 5.68 33,184 5.15 0.0247
2022-05-12 2022-03-31 13F NRG ENERGY COM NEW 629377508 822,678 6,210 0.76 31,558 -10.28 0.0192
2022-02-10 2021-12-31 13F NRG ENERGY COM NEW 629377508 816,468 -192,094 -19.05 35,174 -14.58 0.0188
2021-11-10 2021-09-30 13F NRG ENERGY COM NEW 629377508 1,008,562 -35,126 -3.37 41,179 -2.10 0.0243
2021-08-10 2021-06-30 13F NRG ENERGY COM NEW 629377508 1,043,688 -569,278 -35.29 42,061 -30.89 0.0253
2021-05-13 2021-03-31 13F NRG ENERGY COM NEW 629377508 1,612,966 1,321,332 453.08 60,857 455.72 0.0394
2021-02-11 2020-12-31 13F NRG ENERGY COM NEW 629377508 291,634 -142,906 -32.89 10,951 -18.01 0.0065
2020-11-12 2020-09-30 13F NRG ENERGY COM NEW 629377508 434,540 137,480 46.28 13,357 38.10 0.0087
2020-08-12 2020-06-30 13F NRG ENERGY COM NEW 629377508 297,060 -42,190 -12.44 9,672 4.58 0.0075
2020-05-12 2020-03-31 13F NRG ENERGY COM NEW 629377508 339,250 34,077 11.17 9,248 -23.77 0.0084
2020-02-12 2019-12-31 13F NRG ENERGY COM NEW 629377508 305,173 113,757 59.43 12,131 60.06 0.0088
2019-11-08 2019-09-30 13F NRG ENERGY COM NEW 629377508 191,416 -355,119 -64.98 7,579 -60.51 0.0060
2019-08-12 2019-06-30 13F NRG ENERGY COM NEW 629377508 546,535 171,774 45.84 19,194 20.57 0.0155
2019-05-13 2019-03-31 13F NRG ENERGY COM NEW 629377508 374,761 183,793 96.24 15,920 110.53 0.0153
2019-02-12 2018-12-31 13F NRG ENERGY COM NEW 629377508 190,968 65,447 52.14 7,562 61.13 0.0077
2018-11-13 2018-09-30 13F NRG ENERGY COM NEW 629377508 125,521 17,543 16.25 4,693 41.61 0.0042
2018-08-10 2018-06-30 13F NRG ENERGY COM NEW 629377508 107,978 -709,603 -86.79 3,314 -86.72 0.0030
2018-05-11 2018-03-31 13F NRG ENERGY COM NEW 629377508 817,581 624,726 323.94 24,960 354.40 0.0206
2018-02-12 2017-12-31 13F NRG ENERGY COM NEW 629377508 192,855 184,622 2,242.46 5,493 2,515.71 0.0044
2017-11-13 2017-09-30 13F NRG ENERGY COM NEW 629377508 8,233 -283,502 -97.18 210 -95.82 0.0002
2017-08-11 2017-06-30 13F NRG ENERGY COM NEW 629377508 291,735 141,306 93.94 5,024 78.60 0.0045
2017-05-12 2017-03-31 13F NRG ENERGY COM NEW 629377508 150,429 145,172 2,761.50 2,813 4,295.31 0.0025
2017-02-10 2016-12-31 13F NRG ENERGY COM NEW 629377508 5,257 -509 -8.83 64 0.00 0.0001
2016-11-10 2016-09-30 13F NRG ENERGY COM NEW 629377508 5,766 -76,194 -92.96 64 -94.79 0.0001
2016-08-12 2016-06-30 13F NRG ENERGY COM NEW 629377508 81,960 -43,119 -34.47 1,229 -24.46 0.0013
2016-05-13 2016-03-31 13F NRG ENERGY COM NEW 629377508 125,079 -870,632 -87.44 1,627 -86.12 0.0018
2016-02-12 2015-12-31 13F NRG ENERGY COM NEW 629377508 995,711 92,135 10.20 11,719 -12.67 0.0117
2015-11-13 2015-09-30 13F NRG ENERGY COM NEW 629377508 903,576 866,976 2,368.79 13,419 1,503.23 0.0126
2015-08-13 2015-06-30 13F NRG ENERGY COM NEW 629377508 36,600 30,894 541.43 837 485.31 0.0007
2015-05-14 2015-03-31 13F NRG ENERGY COM NEW 629377508 5,706 -194,411 -97.15 143 -97.35 0.0001
2015-02-17 2014-12-31 13F NRG ENERGY COM NEW 629377508 200,117 3,964 2.02 5,394 -9.78 0.0048
2014-11-14 2014-09-30 13F NRG ENERGY COM NEW 629377508 196,153 -209,342 -51.63 5,979 -60.36 0.0052
2014-08-14 2014-06-30 13F NRG ENERGY COM NEW 629377508 405,495 -1,064,024 -72.41 15,084 -67.72 0.0145
2014-05-15 2014-03-31 13F NRG ENERGY COM NEW 629377508 1,469,519 1,298,455 759.05 46,730 851.15 0.0478
2014-02-14 2013-12-31 13F NRG ENERGY COM NEW 629377508 171,064 -733,828 -81.10 4,913 -80.13 0.0044
2013-11-14 2013-09-30 13F NRG ENERGY COM NEW 629377508 904,892 396,167 77.87 24,731 82.07 0.0232
2013-08-14 2013-06-30 13F NRG ENERGY COM NEW 629377508 508,725 508,725 13,583 0.0134
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
(%)
2025-05-12 2025-03-31 13F NRG ENERGY COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-12 2024-12-31 13F NRG ENERGY COM NEW Call 39,000 0.00 3,519 -0.96 n/a n/a n/a
2024-11-12 2024-09-30 13F NRG ENERGY COM NEW Call 39,000 0.00 3,553 17.00 n/a n/a n/a
2024-08-12 2024-06-30 13F NRG ENERGY COM NEW Call 39,000 62.50 3,037 86.95 n/a n/a n/a
2024-05-10 2024-03-31 13F NRG ENERGY COM NEW Call 24,000 1,625 n/a n/a n/a
2021-08-10 2021-06-30 13F NRG ENERGY COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-13 2021-03-31 13F NRG ENERGY COM NEW Call 141,500 120.06 5,339 121.17 n/a n/a n/a
2021-02-11 2020-12-31 13F NRG ENERGY COM NEW Call 64,300 -7.88 2,414 12.49 n/a n/a n/a
2020-11-12 2020-09-30 13F NRG ENERGY COM NEW Call 69,800 -12.20 2,146 -17.11 n/a n/a n/a
2020-08-12 2020-06-30 13F NRG ENERGY COM NEW Call 79,500 -45.59 2,589 -35.00 n/a n/a n/a
2020-05-12 2020-03-31 13F NRG ENERGY COM NEW Call 146,100 304.71 3,983 177.56 n/a n/a n/a
2020-02-12 2019-12-31 13F NRG ENERGY COM NEW Call 36,100 -65.29 1,435 -65.15 n/a n/a n/a
2019-11-08 2019-09-30 13F NRG ENERGY COM NEW Call 104,000 441.67 4,118 510.98 n/a n/a n/a
2019-08-12 2019-06-30 13F NRG ENERGY COM NEW Call 19,200 -99.26 674 -99.39 n/a n/a n/a
2019-05-13 2019-03-31 13F NRG ENERGY COM NEW Call 2,611,500 2,248.47 110,936 2,418.98 n/a n/a n/a
2019-02-12 2018-12-31 13F NRG ENERGY COM NEW Call 111,200 21.00 4,404 28.14 n/a n/a n/a
2018-11-13 2018-09-30 13F NRG ENERGY COM NEW Call 91,900 -79.74 3,437 -75.31 n/a n/a n/a
2018-08-10 2018-06-30 13F NRG ENERGY COM NEW Call 453,500 81.40 13,922 82.39 n/a n/a n/a
2018-05-11 2018-03-31 13F NRG ENERGY COM NEW Call 250,000 -60.37 7,633 -57.51 n/a n/a n/a
2018-02-12 2017-12-31 13F NRG ENERGY COM NEW Call 630,800 278.86 17,966 321.64 n/a n/a n/a
2017-11-13 2017-09-30 13F NRG ENERGY COM NEW Call 166,500 107.61 4,261 208.54 n/a n/a n/a
2017-08-11 2017-06-30 13F NRG ENERGY COM NEW Call 80,200 -68.57 1,381 -71.06 n/a n/a n/a
2017-05-12 2017-03-31 13F NRG ENERGY COM NEW Call 255,200 4.25 4,772 59.01 n/a n/a n/a
2017-02-10 2016-12-31 13F NRG ENERGY COM NEW Call 244,800 -2.16 3,001 6.99 n/a n/a n/a
2016-11-10 2016-09-30 13F NRG ENERGY COM NEW Call 250,200 38.77 2,805 3.81 n/a n/a n/a
2016-08-12 2016-06-30 13F NRG ENERGY COM NEW Call 180,300 -39.46 2,702 -30.27 n/a n/a n/a
2016-05-13 2016-03-31 13F NRG ENERGY COM NEW Call 297,800 68.53 3,875 86.30 n/a n/a n/a
2016-02-12 2015-12-31 13F NRG ENERGY COM NEW Call 176,700 70.89 2,080 35.50 n/a n/a n/a
2015-11-13 2015-09-30 13F NRG ENERGY COM NEW Call 103,400 -20.58 1,535 -48.47 n/a n/a n/a
2015-08-13 2015-06-30 13F NRG ENERGY COM NEW Call 130,200 -3.56 2,979 -12.41 n/a n/a n/a
2015-05-14 2015-03-31 13F NRG ENERGY COM NEW Call 135,000 -2.39 3,401 -8.75 n/a n/a n/a
2015-02-17 2014-12-31 13F NRG ENERGY COM NEW Call 138,300 -15.31 3,727 -25.12 n/a n/a n/a
2014-11-14 2014-09-30 13F NRG ENERGY COM NEW Call 163,300 -81.90 4,977 -85.17 n/a n/a n/a
2014-08-14 2014-06-30 13F NRG ENERGY COM NEW Call 902,000 18.40 33,555 38.51 n/a n/a n/a
2014-05-15 2014-03-31 13F NRG ENERGY COM NEW Call 761,800 35.70 24,225 50.25 n/a n/a n/a
2014-02-14 2013-12-31 13F NRG ENERGY COM NEW Call 561,400 97.54 16,123 107.56 n/a n/a n/a
2013-11-14 2013-09-30 13F NRG ENERGY COM NEW Call 284,200 7.65 7,768 10.22 n/a n/a n/a
2013-08-14 2013-06-30 13F NRG ENERGY COM NEW Call 264,000 7,048 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
(%)
2025-05-12 2025-03-31 13F NRG ENERGY COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-12 2024-12-31 13F NRG ENERGY COM NEW Put 36,000 0.00 3,248 -0.98 n/a n/a n/a
2024-11-12 2024-09-30 13F NRG ENERGY COM NEW Put 36,000 -52.63 3,280 -44.58 n/a n/a n/a
2024-08-12 2024-06-30 13F NRG ENERGY COM NEW Put 76,000 111.11 5,917 142.90 n/a n/a n/a
2024-05-10 2024-03-31 13F NRG ENERGY COM NEW Put 36,000 2,437 n/a n/a n/a
2023-08-10 2023-06-30 13F NRG ENERGY COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-11 2023-03-31 13F NRG ENERGY COM NEW Put 100,000 -74.52 3,429 -72.54 n/a n/a n/a
2023-02-09 2022-12-31 13F NRG ENERGY COM NEW Put 392,500 0.00 12,489 -16.86 n/a n/a n/a
2022-11-10 2022-09-30 13F NRG ENERGY COM NEW Put 392,500 292.50 15,021 293.53 n/a n/a n/a
2022-08-10 2022-06-30 13F NRG ENERGY COM NEW Put 100,000 0.00 3,817 -0.50 n/a n/a n/a
2022-05-12 2022-03-31 13F NRG ENERGY COM NEW Put 100,000 0.00 3,836 -10.96 n/a n/a n/a
2022-02-10 2021-12-31 13F NRG ENERGY COM NEW Put 100,000 0.00 4,308 5.51 n/a n/a n/a
2021-11-10 2021-09-30 13F NRG ENERGY COM NEW Put 100,000 0.00 4,083 1.32 n/a n/a n/a
2021-08-10 2021-06-30 13F NRG ENERGY COM NEW Put 100,000 -69.23 4,030 -67.13 n/a n/a n/a
2021-05-13 2021-03-31 13F NRG ENERGY COM NEW Put 325,000 113.68 12,262 114.71 n/a n/a n/a
2021-02-11 2020-12-31 13F NRG ENERGY COM NEW Put 152,100 -8.81 5,711 11.39 n/a n/a n/a
2020-11-12 2020-09-30 13F NRG ENERGY COM NEW Put 166,800 -9.10 5,127 -14.19 n/a n/a n/a
2020-08-12 2020-06-30 13F NRG ENERGY COM NEW Put 183,500 6.93 5,975 27.73 n/a n/a n/a
2020-05-12 2020-03-31 13F NRG ENERGY COM NEW Put 171,600 47.42 4,678 1.10 n/a n/a n/a
2020-02-12 2019-12-31 13F NRG ENERGY COM NEW Put 116,400 105.29 4,627 106.10 n/a n/a n/a
2019-11-08 2019-09-30 13F NRG ENERGY COM NEW Put 56,700 160.09 2,245 193.08 n/a n/a n/a
2019-08-12 2019-06-30 13F NRG ENERGY COM NEW Put 21,800 -81.21 766 -84.46 n/a n/a n/a
2019-05-13 2019-03-31 13F NRG ENERGY COM NEW Put 116,000 339.39 4,928 371.58 n/a n/a n/a
2019-02-12 2018-12-31 13F NRG ENERGY COM NEW Put 26,400 -69.44 1,045 -67.66 n/a n/a n/a
2018-11-13 2018-09-30 13F NRG ENERGY COM NEW Put 86,400 64.89 3,231 100.81 n/a n/a n/a
2018-08-10 2018-06-30 13F NRG ENERGY COM NEW Put 52,400 -60.33 1,609 -60.10 n/a n/a n/a
2018-05-11 2018-03-31 13F NRG ENERGY COM NEW Put 132,100 -62.68 4,033 -60.00 n/a n/a n/a
2018-02-12 2017-12-31 13F NRG ENERGY COM NEW Put 354,000 327.02 10,082 375.34 n/a n/a n/a
2017-11-13 2017-09-30 13F NRG ENERGY COM NEW Put 82,900 112.02 2,121 215.16 n/a n/a n/a
2017-08-11 2017-06-30 13F NRG ENERGY COM NEW Put 39,100 -24.52 673 -30.55 n/a n/a n/a
2017-05-12 2017-03-31 13F NRG ENERGY COM NEW Put 51,800 -51.90 969 -26.59 n/a n/a n/a
2017-02-10 2016-12-31 13F NRG ENERGY COM NEW Put 107,700 -5.61 1,320 3.21 n/a n/a n/a
2016-11-10 2016-09-30 13F NRG ENERGY COM NEW Put 114,100 -0.26 1,279 -25.42 n/a n/a n/a
2016-08-12 2016-06-30 13F NRG ENERGY COM NEW Put 114,400 21.44 1,715 39.89 n/a n/a n/a
2016-05-13 2016-03-31 13F NRG ENERGY COM NEW Put 94,200 -57.80 1,226 -53.33 n/a n/a n/a
2016-02-12 2015-12-31 13F NRG ENERGY COM NEW Put 223,200 -2.70 2,627 -22.89 n/a n/a n/a
2015-11-13 2015-09-30 13F NRG ENERGY COM NEW Put 229,400 46.02 3,407 -5.20 n/a n/a n/a
2015-08-13 2015-06-30 13F NRG ENERGY COM NEW Put 157,100 4.59 3,594 -5.02 n/a n/a n/a
2015-05-14 2015-03-31 13F NRG ENERGY COM NEW Put 150,200 -36.94 3,784 -41.06 n/a n/a n/a
2015-02-17 2014-12-31 13F NRG ENERGY COM NEW Put 238,200 -22.79 6,420 -31.72 n/a n/a n/a
2014-11-14 2014-09-30 13F NRG ENERGY COM NEW Put 308,500 -59.24 9,403 -66.61 n/a n/a n/a
2014-08-14 2014-06-30 13F NRG ENERGY COM NEW Put 756,900 9.60 28,157 28.21 n/a n/a n/a
2014-05-15 2014-03-31 13F NRG ENERGY COM NEW Put 690,600 237.70 21,961 273.93 n/a n/a n/a
2014-02-14 2013-12-31 13F NRG ENERGY COM NEW Put 204,500 13.17 5,873 18.91 n/a n/a n/a
2013-11-14 2013-09-30 13F NRG ENERGY COM NEW Put 180,700 27.88 4,939 30.90 n/a n/a n/a
2013-08-14 2013-06-30 13F NRG ENERGY COM NEW Put 141,300 3,773 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.