Vistra Corp.
MX ˙ BMV ˙ US92840M1027
SecurityMX:VST / Vistra Corp.
InstitutionGuyasuta Investment Advisors Inc
Latest Disclosed Ownership365,123 shares
Latest Disclosed Value $ 54,888,880
Guyasuta Investment Advisors Inc reports 18.53% decrease in ownership of VST / Vistra Corp.

On April 17, 2026 - Guyasuta Investment Advisors Inc filed a 13F-HR form disclosing ownership of 365,123 shares of Vistra Corp. (MX:VST) valued at $54,888,880 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 448,174 shares of Vistra Corp.. This represents a change in shares of -18.53% 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)
2026-04-17 2026-03-31 13F VISTRA COM 92840M102 365,123 -83,051 -18.53 54,889 -24.09 3.1730
2026-01-23 2025-12-31 13F VISTRA COM 92840M102 448,174 -12,150 -2.64 72,304 -19.83 4.1190
2025-10-21 2025-09-30 13F VISTRA COM 92840M102 460,324 -5,839 -1.25 90,187 -0.18 5.1854
2025-07-17 2025-06-30 13F VISTRA COM 92840M102 466,163 -6,719 -1.42 90,347 62.68 5.5332
2025-04-22 2025-03-31 13F VISTRA COM 92840M102 472,882 -14,516 -2.98 55,535 -17.35 3.6307
2025-01-30 2024-12-31 13F VISTRA COM 92840M102 487,398 -13,050 -2.61 67,198 13.27 4.2257
2024-11-13 2024-09-30 13F VISTRA COM 92840M102 500,448 -243,125 -32.70 59,323 107.12 3.6597
2024-07-22 2024-06-30 13F VISTRA COM 92840M102 743,573 -8,506 -1.13 28,642 -1.13 2.1064
2024-04-16 2024-03-31 13F VISTRA COM 92840M102 752,079 -3,154 -0.42 28,970 -0.42 2.1007
2024-02-05 2023-12-31 13F VISTRA COM 92840M102 755,233 -11,655 -1.52 29,092 14.33 2.1027
2023-10-25 2023-09-30 13F VISTRA COM 92840M102 766,888 -160,045 -17.27 25,445 4.58 1.9711
2023-07-17 2023-06-30 13F VISTRA COM 92840M102 926,933 1,702 0.18 24,332 9.57 1.7992
2023-04-28 2023-03-31 13F VISTRA COM 92840M102 925,231 5,400 0.59 22,206 4.05 1.7158
2023-01-30 2022-12-31 13F VISTRA COM 92840M102 919,831 -41,273 -4.29 21,340 5.73 1.6848
2022-10-25 2022-09-30 13F VISTRA COM 92840M102 961,104 2,701 0.28 20,183 -7.84 1.7445
2022-07-21 2022-06-30 13F VISTRA COM 92840M102 958,403 5,085 0.53 21,899 -1.20 1.7129
2022-05-03 2022-03-31 13F VISTRA COM 92840M102 953,318 8,555 0.91 22,164 3.03 1.5218
2022-02-08 2021-12-31 13F VISTRA COM 92840M102 944,763 -8,339 -0.87 21,512 31.99 1.4091
2021-11-09 2021-09-30 13F VISTRA COM 92840M102 953,102 30,943 3.36 16,298 -4.72 1.1619
2021-08-12 2021-06-30 13F VISTRA COM 92840M102 922,159 39,942 4.53 17,106 9.67 1.2300
2021-05-11 2021-03-31 13F VISTRA COM 92840M102 882,217 17,747 2.05 15,598 -8.22 1.2180
2021-02-08 2020-12-31 13F VISTRA COM 92840M102 864,470 339,500 64.67 16,995 71.65 1.4196
2020-10-28 2020-09-30 13F VISTRA COM 92840M102 524,970 405,952 341.08 9,901 346.80 0.9193
2020-08-06 2020-06-30 13F VISTRA ENERGY COM 92840M102 119,018 4,783 4.19 2,216 21.56 0.2273
2020-04-28 2020-03-31 13F VISTRA ENERGY COM 92840M102 114,235 20,245 21.54 1,823 -15.64 0.2185
2020-02-10 2019-12-31 13F VISTRA ENERGY COM 92840M102 93,990 18,495 24.50 2,161 7.09 0.2098
2019-11-08 2019-09-30 13F VISTRA ENERGY COM 92840M102 75,495 -6,180 -7.57 2,018 9.08 0.2086
2019-08-06 2019-06-30 13F VISTRA ENERGY COM 92840M102 81,675 7,325 9.85 1,850 -4.44 0.1922
2019-05-10 2019-03-31 13F VISTRA ENERGY COM 92840M102 74,350 5,500 7.99 1,936 22.84 0.2156
2019-02-11 2018-12-31 13F VISTRA ENERGY COM 92840M102 68,850 5,845 9.28 1,576 0.51 0.1944
2018-11-08 2018-09-30 13F VISTRA ENERGY COM 92840M102 63,005 -385 -0.61 1,568 4.53 0.1670
2018-08-07 2018-06-30 13F VISTRA ENERGY COM 92840M102 63,390 -20,505 -24.44 1,500 -14.19 0.1719
2018-05-09 2018-03-31 13F VISTRA ENERGY COM 92840M102 83,895 -2,450 -2.84 1,748 10.49 0.2047
2018-02-12 2017-12-31 13F VISTRA ENERGY COM 92840M102 86,345 48,570 128.58 1,582 124.08 0.1793
2017-11-09 2017-09-30 13F VISTRA ENERGY COM 92840M102 37,775 -7,775 -17.07 706 -7.71 0.0852
2017-08-09 2017-06-30 13F VISTRA ENERGY COM 92840M102 45,550 45,550 765 0.0920
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.