FirstEnergy Corp.
US ˙ NYSE ˙ US3379321074

SecurityFE / FirstEnergy Corp.
InstitutionAssetmark, Inc
Latest Disclosed Ownership74,246 shares
Latest Disclosed Value $ 3,761,316
Assetmark, Inc reports 30.70% increase in ownership of FE / FirstEnergy Corp.

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 74,246 shares of FirstEnergy Corp. (US:FE) valued at $3,761,302 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 56,808 shares of FirstEnergy Corp.. This represents a change in shares of 30.70% during the quarter. The current value of the position is $3,381,163 USD.

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)
2026-05-06 2026-03-31 13F FIRSTENERGY COM 337932107 74,246 17,438 30.70 3,761 47.90 0.0077
2026-01-23 2025-12-31 13F FIRSTENERGY COM 337932107 56,808 2,777 5.14 2,543 2.75 0.0052
2025-11-06 2025-09-30 13F FIRSTENERGY COM 337932107 54,031 8,750 19.32 2,476 35.77 0.0053
2025-08-04 2025-06-30 13F FIRSTENERGY COM 337932107 45,281 27,754 158.35 1,823 157.49 0.0043
2025-05-06 2025-03-31 13F FIRSTENERGY COM 337932107 17,527 15,970 1,025.69 708 1,060.66 0.0019
2025-02-06 2024-12-31 13F FIRSTENERGY COM 337932107 1,557 870 126.64 62 103.33 0.0002
2024-11-01 2024-09-30 13F FIRSTENERGY COM 337932107 687 44 6.84 30 25.00 0.0001
2024-08-13 2024-06-30 13F FIRSTENERGY COM 337932107 643 202 45.80 25 41.18 0.0001
2024-05-07 2024-03-31 13F FIRSTENERGY COM 337932107 441 300 212.77 17 240.00 0.0001
2024-02-09 2023-12-31 13F FIRSTENERGY COM 337932107 141 141 5 0.0000
2021-05-14 2021-03-31 13F FIRSTENERGY CORP COM COM 337932107 0 -111 -100.00 0 -100.00
2021-02-10 2020-12-31 13F FIRSTENERGY CORP COM COM 337932107 111 111 3 0.0000
2020-11-13 2020-09-30 13F FIRSTENERGY CORP COM COM 337932107 0 -359 -100.00 0 -100.00
2020-08-11 2020-06-30 13F FIRSTENERGY CORP COM COM 337932107 359 -20,662 -98.29 14 -98.34 0.0001
2020-05-12 2020-03-31 13F FIRSTENERGY CORP COM COM 337932107 21,021 20,687 6,193.71 842 5,162.50 0.0071
2020-02-11 2019-12-31 13F FIRSTENERGY CORP COM COM 337932107 334 0 0.00 16 0.00 0.0001
2019-11-13 2019-09-30 13F FIRSTENERGY CORP COM COM 337932107 334 0 0.00 16 14.29 0.0001
2019-08-14 2019-06-30 13F FIRSTENERGY CORP COM COM 337932107 334 0 0.00 14 0.00 0.0001
2019-05-14 2019-03-31 13F FIRSTENERGY CORP COM COM 337932107 334 0 0.00 14 7.69 0.0001
2019-02-13 2018-12-31 13F FIRSTENERGY CORP COM COM 337932107 334 0 0.00 13 8.33 0.0001
2018-11-13 2018-09-30 13F FIRSTENERGY CORP COM COM 337932107 334 0 0.00 12 0.00 0.0001
2018-08-01 2018-06-30 13F FIRSTENERGY CORP COM COM 337932107 334 0 0.00 12 9.09 0.0001
2018-05-16 2018-03-31 13F FIRSTENERGY CORP COM COM 337932107 334 -238 -41.61 11 -38.89 0.0001
2018-02-13 2017-12-31 13F FIRSTENERGY CORP COM COM 337932107 572 199 53.35 18 50.00 0.0002
2017-11-08 2017-09-30 13F FIRSTENERGY CORP COM COM 337932107 373 -2,426 -86.67 12 -85.37 0.0001
2017-08-14 2017-06-30 13F FIRSTENERGY CORP COM COM 337932107 2,799 -5,775 -67.35 82 -69.96 0.0010
2017-09-15 2017-03-31 13F/A-1 FIRSTENERGY CORP COM COM 337932107 8,574 8,179 2,070.63 273 2,175.00 0.0036
2017-05-08 2017-03-31 13F FIRSTENERGY CORP COM COM 337932107 8,574 8,179 273
2017-09-15 2016-12-31 13F/A-1 FIRSTENERGY CORP COM COM 337932107 395 -383 -49.23 12 -53.85 0.0002
2017-02-14 2016-12-31 13F FIRSTENERGY CORP COM COM 337932107 395 -383 12
2017-09-14 2016-09-30 13F/A-1 FIRSTENERGY CORP COM COM 337932107 778 -3,270 -80.78 26 -81.56 0.0004
2016-11-04 2016-09-30 13F FIRSTENERGY CORP COM COM 337932107 778 -3,270 26
2017-09-14 2016-06-30 13F/A-1 FIRSTENERGY CORP COM COM 337932107 4,048 3,714 1,111.98 141 1,075.00 0.0024
2016-08-08 2016-06-30 13F FIRSTENERGY CORP COM COM 337932107 4,048 3,714 141
2017-09-14 2016-03-31 13F/A-1 FIRSTENERGY CORP COM COM 337932107 334 0 0.00 12 9.09 0.0002
2016-05-13 2016-03-31 13F FIRSTENERGY CORP COM COM 337932107 334 0 12
2017-09-14 2015-12-31 13F/A-1 FIRSTENERGY CORP COM COM 337932107 334 334 11 0.0002
2016-02-12 2015-12-31 13F FIRSTENERGY CORP COM COM 337932107 334 334 11
2015-11-10 2015-09-30 13F FIRSTENERGY CORP COM COM 337932107 0 0 0 0.0000
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.