Vistra Corp.
MX ˙ BMV ˙ US92840M1027
SecurityMX:VST / Vistra Corp.
InstitutionKorea Investment CORP
Latest Disclosed Ownership461,899 shares
Latest Disclosed Value $ 69,437,277
Korea Investment CORP reports 8.89% decrease in ownership of VST / Vistra Corp.

On May 13, 2026 - Korea Investment CORP filed a 13F-HR form disclosing ownership of 461,899 shares of Vistra Corp. (MX:VST) valued at $69,437,277 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 506,960 shares of Vistra Corp.. This represents a change in shares of -8.89% 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)
2026-05-13 2026-03-31 13F VISTRA COM 92840M102 461,899 -45,061 -8.89 69,437 -15.10 0.1439
2026-02-13 2025-12-31 13F VISTRA COM 92840M102 506,960 23,666 4.90 81,788 -13.62 0.1610
2025-11-13 2025-09-30 13F VISTRA COM 92840M102 483,294 -19,827 -3.94 94,687 -2.90 0.1948
2025-08-13 2025-06-30 13F VISTRA COM 92840M102 503,121 29,646 6.26 97,510 75.36 0.2169
2025-05-14 2025-03-31 13F VISTRA COM 92840M102 473,475 121,047 34.35 55,605 14.44 0.1348
2025-02-12 2024-12-31 13F VISTRA COM 92840M102 352,428 -286,716 -44.86 48,589 -35.87 0.1152
2024-11-13 2024-09-30 13F VISTRA COM 92840M102 639,144 62,705 10.88 75,764 52.87 0.1798
2024-08-13 2024-06-30 13F VISTRA COM 92840M102 576,439 -112,632 -16.35 49,562 3.27 0.1249
2024-05-14 2024-03-31 13F VISTRA COM 92840M102 689,071 100,058 16.99 47,994 111.53 0.1218
2024-02-13 2023-12-31 13F VISTRA COM 92840M102 589,013 402,974 216.61 22,689 267.60 0.0596
2023-11-13 2023-09-30 13F VISTRA COM 92840M102 186,039 -10,574 -5.38 6,173 19.59 0.0182
2023-08-11 2023-06-30 13F VISTRA COM 92840M102 196,613 41,232 26.54 5,161 38.40 0.0145
2023-05-12 2023-03-31 13F VISTRA COM 92840M102 155,381 -59,900 -27.82 3,729 -25.33 0.0109
2023-02-13 2022-12-31 13F VISTRA COM 92840M102 215,281 -81,796 -27.53 4,995 -19.96 0.0157
2022-11-10 2022-09-30 13F VISTRA COM 92840M102 297,077 212,095 249.58 6,239 221.27 0.0192
2022-08-12 2022-06-30 13F VISTRA COM 92840M102 84,982 -10,918 -11.38 1,942 -12.91 0.0059
2022-05-13 2022-03-31 13F VISTRA COM 92840M102 95,900 11,100 13.09 2,230 15.48 0.0055
2022-02-09 2021-12-31 13F VISTRA COM 92840M102 84,800 84,800 1,931 0.0050
2021-08-12 2021-06-30 13F VISTRA COM 92840M102 0 -315,900 -100.00 0 -100.00
2021-05-13 2021-03-31 13F VISTRA COM 92840M102 315,900 -205,700 -39.44 5,585 -45.54 0.0176
2021-02-10 2020-12-31 13F VISTRA COM 92840M102 521,600 439,900 538.43 10,255 565.48 0.0308
2020-11-12 2020-09-30 13F VISTRA COM 92840M102 81,700 -290,000 -78.02 1,541 -77.73 0.0054
2020-08-12 2020-06-30 13F VISTRA ENERGY COM 92840M102 371,700 280,800 308.91 6,921 376.98 0.0254
2020-05-14 2020-03-31 13F VISTRA ENERGY COM 92840M102 90,900 42,700 88.59 1,451 30.96 0.0064
2020-02-11 2019-12-31 13F VISTRA ENERGY COM 92840M102 48,200 1,600 3.43 1,108 -11.08 0.0040
2019-11-12 2019-09-30 13F VISTRA ENERGY COM 92840M102 46,600 44,200 1,841.67 1,246 2,207.41 0.0053
2019-08-12 2019-06-30 13F VISTRA ENERGY COM 92840M102 2,400 -73,700 -96.85 54 -97.27 0.0002
2019-05-15 2019-03-31 13F VISTRA ENERGY COM 92840M102 76,100 -152,600 -66.72 1,981 -62.16 0.0089
2019-02-13 2018-12-31 13F VISTRA ENERGY COM 92840M102 228,700 227,400 17,492.31 5,235 16,259.38 0.0285
2018-11-13 2018-09-30 13F VISTRA ENERGY COM 92840M102 1,300 -177,000 -99.27 32 -99.24 0.0001
2018-08-13 2018-06-30 13F VISTRA ENERGY COM 92840M102 178,300 178,300 4,219 0.0192
2018-05-09 2018-03-31 13F VISTRA ENERGY COM 92840M102 0 -2,000 -100.00 0 -100.00
2018-02-12 2017-12-31 13F VISTRA ENERGY COM 92840M102 2,000 2,000 37 0.0002
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.