FirstEnergy Corp.
MX ˙ BMV ˙ US3379321074
SecurityMX:FE / FirstEnergy Corp.
InstitutionRhumbline Advisers
Latest Disclosed Ownership1,003,329 shares
Latest Disclosed Value $ 50,828,545
Rhumbline Advisers reports 2.74% decrease in ownership of FE / FirstEnergy Corp.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 1,003,329 shares of FirstEnergy Corp. (MX:FE) valued at $50,828,545 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,031,542 shares of FirstEnergy Corp.. This represents a change in shares of -2.74% during the quarter.

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)
2026-05-12 2026-03-31 13F FIRSTENERGY CORP COM COM 337932107 1,003,329 -28,213 -2.74 50,829 10.06 0.0435
2026-02-13 2025-12-31 13F FIRSTENERGY CORP COM COM 337932107 1,031,542 125 0.01 46,182 -2.28 0.0373
2025-11-06 2025-09-30 13F FIRSTENERGY CORP COM COM 337932107 1,031,417 146 0.01 47,259 13.83 0.0380
2025-08-12 2025-06-30 13F FIRSTENERGY CORP COM COM 337932107 1,031,271 18,906 1.87 41,519 1.46 0.0356
2025-05-29 2025-03-31 13F/A-1 FIRSTENERGY CORP COM COM 337932107 1,012,365 71,032 7.55 40,920 9.27 0.0383
2025-04-08 2025-03-31 13F FIRSTENERGY CORP COM COM 337932107 1,012,365 71,032 40,920 0.0383
2025-05-29 2024-12-31 13F/A-1 FIRSTENERGY CORP COM COM 337932107 941,333 -50,671 -5.11 37,446 -14.89 0.0335
2025-01-30 2024-12-31 13F FIRSTENERGY CORP COM COM 337932107 941,333 -50,671 37,446 0.0335
2024-11-12 2024-09-30 13F FIRSTENERGY CORP COM COM 337932107 992,004 30,471 3.17 43,995 19.56 0.0397
2024-08-01 2024-06-30 13F FIRSTENERGY CORP COM COM 337932107 961,533 2,826 0.29 36,798 -0.62 0.0346
2024-05-09 2024-03-31 13F FIRSTENERGY CORP COM COM 337932107 958,707 -3,582 -0.37 37,025 4.96 0.0356
2024-02-08 2023-12-31 13F FIRSTENERGY CORP COM COM 337932107 962,289 -7,412 -0.76 35,277 6.44 0.0370
2023-11-09 2023-09-30 13F FIRSTENERGY CORP COM COM 337932107 969,701 -22,402 -2.26 33,144 -14.07 0.0385
2023-08-08 2023-06-30 13F FIRSTENERGY CORP COM COM 337932107 992,103 -5,450 -0.55 38,573 98,802.56 0.0432
2023-05-11 2023-03-31 13F FIRSTENERGY CORP COM COM 337932107 997,553 21,420 2.19 40 -99.90 0.0493
2023-02-14 2022-12-31 13F FIRSTENERGY CORP COM COM 337932107 976,133 25,086 2.64 40,939 16.34 0.0550
2022-11-10 2022-09-30 13F FIRSTENERGY CORP COM COM 337932107 951,047 21,839 2.35 35,189 -1.35 0.0524
2022-08-11 2022-06-30 13F FIRSTENERGY CORP COM COM 337932107 929,208 97,740 11.76 35,672 -6.45 0.0521
2022-05-12 2022-03-31 13F FIRSTENERGY CORP COM COM 337932107 831,468 29,946 3.74 38,131 14.39 0.0491
2022-02-10 2021-12-31 13F FIRSTENERGY CORP COM COM 337932107 801,522 4,136 0.52 33,335 17.36 0.0409
2021-11-12 2021-09-30 13F FIRSTENERGY CORP COM COM 337932107 797,386 -34,165 -4.11 28,403 -8.21 0.0384
2021-08-05 2021-06-30 13F FIRSTENERGY CORP COM COM 337932107 831,551 -48,828 -5.55 30,942 1.32 0.0406
2021-05-06 2021-03-31 13F FIRSTENERGY CORP COM COM 337932107 880,379 -19,312 -2.15 30,540 10.89 0.0415
2021-02-10 2020-12-31 13F FIRSTENERGY CORP COM COM 337932107 899,691 -6,026 -0.67 27,540 5.91 0.0380
2020-11-12 2020-09-30 13F FIRSTENERGY CORP COM COM 337932107 905,717 1,752 0.19 26,003 -25.82 0.0407
2020-08-13 2020-06-30 13F FIRSTENERGY CORP COM COM 337932107 903,965 -66,062 -6.81 35,056 -9.81 0.0585
2020-05-06 2020-03-31 13F FIRSTENERGY CORP COM COM 337932107 970,027 25,105 2.66 38,869 -15.36 0.0815
2020-02-05 2019-12-31 13F FIRSTENERGY CORP COM COM 337932107 944,922 22,745 2.47 45,923 3.25 0.0768
2019-10-23 2019-09-30 13F FIRSTENERGY CORP COM COM 337932107 922,177 41,975 4.77 44,477 18.04 0.0813
2019-08-14 2019-06-30 13F FIRSTENERGY CORP COM COM 337932107 880,202 23,392 2.73 37,681 5.69 0.0707
2019-05-01 2019-03-31 13F FIRSTENERGY CORP COM COM 337932107 856,810 -89,818 -9.49 35,652 0.30 0.0690
2019-01-31 2018-12-31 13F FIRSTENERGY CORP COM COM 337932107 946,628 2,525 0.27 35,546 1.29 0.0773
2018-11-07 2018-09-30 13F FIRSTENERGY CORP COM COM 337932107 944,103 22,466 2.44 35,092 6.03 0.0678
2018-08-06 2018-06-30 13F FIRSTENERGY CORP COM COM 337932107 921,637 87,994 10.56 33,096 16.73 0.0667
2018-05-02 2018-03-31 13F FIRSTENERGY CORP COM COM 337932107 833,643 11,745 1.43 28,352 12.66 0.0592
2018-02-09 2017-12-31 13F FIRSTENERGY CORP COM COM 337932107 821,898 13,099 1.62 25,167 0.93 0.0511
2017-11-06 2017-09-30 13F FIRSTENERGY CORP COM COM 337932107 808,799 19,274 2.44 24,935 8.30 0.0542
2017-08-02 2017-06-30 13F FIRSTENERGY CORP COM COM 337932107 789,525 26,535 3.48 23,023 -5.17 0.0526
2017-05-02 2017-03-31 13F FIRSTENERGY CORP COM COM 337932107 762,990 34,500 4.74 24,278 7.61 0.0567
2017-01-27 2016-12-31 13F FIRSTENERGY CORP COM COM 337932107 728,490 102,440 16.36 22,561 8.94 0.0572
2016-11-08 2016-09-30 13F FIRSTENERGY CORP COM COM 337932107 626,050 20,896 3.45 20,710 -1.97 0.0571
2016-08-11 2016-06-30 13F FIRSTENERGY CORP COM COM 337932107 605,154 54,390 9.88 21,126 6.64 0.0626
2016-05-02 2016-03-31 13F FIRSTENERGY CORP COM 337932107 550,764 26,431 5.04 19,811 19.08 0.0615
2016-02-03 2015-12-31 13F FIRSTENERGY CORP COM 337932107 524,333 -14,216 -2.64 16,637 -1.33 0.0535
2015-11-04 2015-09-30 13F FIRSTENERGY CORP COM 337932107 538,549 11,866 2.25 16,862 -1.64 0.0574
2015-08-04 2015-06-30 13F FIRSTENERGY CORP COM 337932107 526,683 659 0.13 17,144 -7.04 0.0546
2015-05-12 2015-03-31 13F FIRSTENERGY CORP COM 337932107 526,024 -6,689 -1.26 18,442 -11.21 0.0532
2015-02-06 2014-12-31 13F FIRSTENERGY CORP COM 337932107 532,713 1,150 0.22 20,770 16.39 0.0603
2014-11-12 2014-09-30 13F FIRSTENERGY CORP COM 337932107 531,563 -12,108 -2.23 17,845 -5.46 0.0536
2014-08-06 2014-06-30 13F FIRSTENERGY CORP COM 337932107 543,671 -13,509 -2.42 18,876 -0.45 0.0554
2014-05-06 2014-03-31 13F FIRSTENERGY CORP COM 337932107 557,180 -8,720 -1.54 18,961 1.60 0.0562
2014-02-03 2013-12-31 13F FIRSTENERGY CORP COM 337932107 565,900 -30,664 -5.14 18,663 -14.17 0.0551
2013-11-05 2013-09-30 13F FIRSTENERGY CORP COM 337932107 596,564 10,365 1.77 21,745 -0.66 0.0674
2013-08-07 2013-06-30 13F FIRSTENERGY CORP COM 337932107 586,199 586,199 21,889 0.0703
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.