Vistra Corp.
MX ˙ BMV ˙ US92840M1027
SecurityMX:VST / Vistra Corp.
InstitutionGAM Holding AG
Latest Disclosed Ownership5,567 shares
Latest Disclosed Value $ 898,124
GAM Holding AG reports 375.81% increase in ownership of VST / Vistra Corp.

On February 17, 2026 - GAM Holding AG filed a 13F-HR form disclosing ownership of 5,567 shares of Vistra Corp. (MX:VST) valued at $898,124 USD as of December 31, 2025. The entity filed a previous 13F-HR on October 21, 2025 disclosing 1,170 shares of Vistra Corp.. This represents a change in shares of 375.81% 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)
2026-02-17 2025-12-31 13F VISTRA COM 92840M102 5,567 4,397 375.81 898 292.14 0.0435
2025-10-21 2025-09-30 13F VISTRA COM 92840M102 1,170 1,170 229 0.0142
2020-05-12 2020-03-31 13F VISTRA ENERGY COM 92840M102 0 -15,903 -100.00 0 -100.00
2020-02-06 2019-12-31 13F VISTRA ENERGY COM 92840M102 15,903 -3,744 -19.06 365 -30.48 0.0172
2019-11-08 2019-09-30 13F VISTRA ENERGY COM 92840M102 19,647 -37,345 -65.53 525 -59.30 0.0231
2019-08-12 2019-06-30 13F VISTRA ENERGY COM 92840M102 56,992 22,421 64.85 1,290 57.13 0.0504
2019-05-10 2019-03-31 13F VISTRA ENERGY COM 92840M102 34,571 18,173 110.82 821 111.05 0.0345
2019-02-08 2018-12-31 13F VISTRA ENERGY COM 92840M102 16,398 -21,269 -56.47 389 -58.48 0.0197
2018-11-13 2018-09-30 13F VISTRA ENERGY COM 92840M102 37,667 -44,417 -54.11 937 -51.75 0.0341
2018-08-09 2018-06-30 13F VISTRA ENERGY COM 92840M102 82,084 82,084 1,942 0.0675
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.