Vistra Corp.
MX ˙ BMV ˙ US92840M1027
SecurityMX:VST / Vistra Corp.
InstitutionCapital Fund Management S.a.
Latest Disclosed Ownership261,450 shares
Latest Disclosed Value $ 39,303,778
Capital Fund Management S.a. ownership in VST / Vistra Corp.

On May 14, 2026 - Capital Fund Management S.a. filed a 13F-HR form disclosing ownership of 261,450 shares of Vistra Corp. (MX:VST) valued at $39,303,778 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 156,735 shares of Vistra Corp.. This represents a change in shares of 66.81% during the quarter.

Capital Fund Management S.a. has a history of taking positions in derivatives of the underlying security (VST) in the form of stock options. The firm currently holds call options representing 125,100 of underlying shares valued at $18,806,283 USD and put options representing 171,700 of underlying shares valued at $25,811,661 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:VST / Vistra Corp. Historical Put/Call Ratio
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)
2026-05-14 2026-03-31 13F VISTRA CORP COM VISTRA CORP COM 92840M102 261,450 104,715 66.81 39,304 55.43 0.1776
2026-02-17 2025-12-31 13F VISTRA CORP COM VISTRA CORP COM 92840M102 156,735 125,055 394.74 25,286 307.44 0.0703
2025-11-13 2025-09-30 13F VISTRA COM 92840M102 31,680 31,680 6,207 0.0163
2024-05-15 2024-03-31 13F VISTRA COM 92840M102 0 -125,978 -100.00 0 -100.00
2024-02-14 2023-12-31 13F VISTRA COM 92840M102 125,978 125,978 4,853 0.0130
2021-08-12 2021-06-30 13F VISTRA COM 92840M102 0 -173,110 -100.00 0 -100.00
2021-05-14 2021-03-31 13F VISTRA COM 92840M102 173,110 173,110 3,061 0.0338
2020-08-13 2020-06-30 13F Vistra Energy COM 92840M102 0 -361,247 -100.00 0 -100.00
2020-05-13 2020-03-31 13F Vistra Energy COM 92840M102 361,247 183,861 103.65 5,766 41.39 0.0892
2020-02-13 2019-12-31 13F Vistra Energy COM 92840M102 177,386 139,386 366.81 4,078 312.34 0.0321
2019-05-13 2019-03-31 13F/A-1 Vistra Energy COM 92840M102 38,000 38,000 989 0.0088
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F VISTRA CORP COM VISTRA CORP COM Call 125,100 -23.16 18,806 -28.40 n/a n/a n/a
2026-02-17 2025-12-31 13F VISTRA CORP COM VISTRA CORP COM Call 162,800 -35.65 26,265 -47.01 n/a n/a n/a
2025-11-13 2025-09-30 13F VISTRA COM Call 253,000 -37.08 49,568 -36.40 n/a n/a n/a
2025-08-13 2025-06-30 13F VISTRA COM Call 402,100 -37.42 77,931 3.28 n/a n/a n/a
2025-05-14 2025-03-31 13F VISTRA COM Call 642,500 -0.50 75,455 -15.24 n/a n/a n/a
2025-02-13 2024-12-31 13F VISTRA COM Call 645,700 -12.97 89,023 1.23 n/a n/a n/a
2024-11-13 2024-09-30 13F VISTRA COM Call 741,900 33.46 87,945 84.00 n/a n/a n/a
2024-08-13 2024-06-30 13F VISTRA COM Call 555,900 1,621.05 47,796 2,025.21 n/a n/a n/a
2024-05-15 2024-03-31 13F VISTRA COM Call 32,300 -45.99 2,250 -2.34 n/a n/a n/a
2024-02-14 2023-12-31 13F VISTRA COM Call 59,800 2,303 n/a n/a n/a
2021-02-12 2020-12-31 13F VISTRA COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-11-13 2020-09-30 13F VISTRA COM Call 12,800 241 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F VISTRA CORP COM VISTRA CORP COM Put 171,700 -35.74 25,812 -40.12 n/a n/a n/a
2026-02-17 2025-12-31 13F VISTRA CORP COM VISTRA CORP COM Put 267,200 -29.67 43,107 -42.08 n/a n/a n/a
2025-11-13 2025-09-30 13F VISTRA COM Put 379,900 -3.82 74,430 -2.77 n/a n/a n/a
2025-08-13 2025-06-30 13F VISTRA COM Put 395,000 -33.91 76,555 9.06 n/a n/a n/a
2025-05-14 2025-03-31 13F VISTRA COM Put 597,700 45.11 70,194 23.61 n/a n/a n/a
2025-02-13 2024-12-31 13F VISTRA COM Put 411,900 -34.87 56,789 -24.25 n/a n/a n/a
2024-11-13 2024-09-30 13F VISTRA COM Put 632,400 32.72 74,965 82.98 n/a n/a n/a
2024-08-13 2024-06-30 13F VISTRA COM Put 476,500 466.59 40,969 599.49 n/a n/a n/a
2024-05-15 2024-03-31 13F VISTRA COM Put 84,100 83.22 5,858 231.28 n/a n/a n/a
2024-02-14 2023-12-31 13F VISTRA COM Put 45,900 1,768 n/a n/a n/a
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.