Vistra Corp.
MX ˙ BMV ˙ US92840M1027
SecurityMX:VST / Vistra Corp.
InstitutionRhumbline Advisers
Latest Disclosed Ownership598,381 shares
Latest Disclosed Value $ 89,954,477
Rhumbline Advisers reports 1.12% decrease in ownership of VST / Vistra Corp.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 598,381 shares of Vistra Corp. (MX:VST) valued at $89,954,477 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 605,189 shares of Vistra Corp.. This represents a change in shares of -1.12% 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)
2026-05-12 2026-03-31 13F VISTRA COM 92840M102 598,381 -6,808 -1.12 89,954 -7.87 0.0770
2026-02-13 2025-12-31 13F VISTRA COM 92840M102 605,189 -3,848 -0.63 97,635 -18.18 0.0789
2025-11-06 2025-09-30 13F VISTRA COM 92840M102 609,037 -30,030 -4.70 119,322 -3.66 0.0958
2025-08-12 2025-06-30 13F VISTRA COM 92840M102 639,067 -71,420 -10.05 123,857 48.44 0.1061
2025-05-29 2025-03-31 13F/A-1 VISTRA COM 92840M102 710,487 -8,302 -1.15 83,439 -15.80 0.0780
2025-04-08 2025-03-31 13F VISTRA COM 92840M102 710,487 -8,302 83,439 0.0780
2025-05-29 2024-12-31 13F/A-1 VISTRA COM 92840M102 718,789 30,722 4.46 99,099 21.50 0.0886
2025-01-30 2024-12-31 13F VISTRA COM 92840M102 718,789 30,722 99,099 0.0886
2024-11-12 2024-09-30 13F VISTRA COM 92840M102 688,067 35,309 5.41 81,563 45.33 0.0736
2024-08-01 2024-06-30 13F VISTRA COM 92840M102 652,758 -342,149 -34.39 56,124 -19.01 0.0527
2024-05-09 2024-03-31 13F VISTRA COM 92840M102 994,907 -16,459 -1.63 69,295 77.88 0.0665
2024-02-08 2023-12-31 13F VISTRA COM 92840M102 1,011,366 -60,981 -5.69 38,958 9.49 0.0408
2023-11-09 2023-09-30 13F VISTRA COM 92840M102 1,072,347 596,604 125.40 35,580 184.91 0.0413
2023-08-08 2023-06-30 13F VISTRA COM 92840M102 475,743 -8,791 -1.81 12,488 113,427.27 0.0140
2023-05-11 2023-03-31 13F VISTRA COM 92840M102 484,534 10,731 2.26 12 -99.90 0.0143
2023-02-14 2022-12-31 13F VISTRA COM 92840M102 473,803 12,143 2.63 10,992 13.38 0.0148
2022-11-10 2022-09-30 13F VISTRA COM 92840M102 461,660 21,607 4.91 9,695 -3.58 0.0144
2022-08-11 2022-06-30 13F VISTRA COM 92840M102 440,053 -18,129 -3.96 10,055 -5.61 0.0147
2022-05-12 2022-03-31 13F VISTRA COM 92840M102 458,182 11,136 2.49 10,653 4.66 0.0137
2022-02-10 2021-12-31 13F VISTRA COM 92840M102 447,046 11,481 2.64 10,179 36.67 0.0125
2021-11-12 2021-09-30 13F VISTRA COM 92840M102 435,565 -96,325 -18.11 7,448 -24.52 0.0101
2021-08-05 2021-06-30 13F VISTRA COM 92840M102 531,890 -13,047 -2.39 9,867 2.42 0.0129
2021-05-06 2021-03-31 13F VISTRA COM 92840M102 544,937 -22,032 -3.89 9,634 -13.57 0.0131
2021-02-10 2020-12-31 13F VISTRA COM 92840M102 566,969 20,231 3.70 11,147 8.11 0.0154
2020-11-12 2020-09-30 13F VISTRA COM 92840M102 546,738 -27,792 -4.84 10,311 -3.62 0.0162
2020-08-13 2020-06-30 13F VISTRA ENERGY COM 92840M102 574,530 117,040 25.58 10,698 46.51 0.0179
2020-05-06 2020-03-31 13F VISTRA ENERGY COM 92840M102 457,490 103,093 29.09 7,302 -10.38 0.0153
2020-02-05 2019-12-31 13F VISTRA ENERGY COM 92840M102 354,397 11,906 3.48 8,148 -11.00 0.0136
2019-10-23 2019-09-30 13F VISTRA ENERGY COM 92840M102 342,491 12,949 3.93 9,155 22.70 0.0167
2019-08-14 2019-06-30 13F VISTRA ENERGY COM 92840M102 329,542 11,613 3.65 7,461 -9.85 0.0140
2019-05-01 2019-03-31 13F VISTRA ENERGY COM 92840M102 317,929 -57,707 -15.36 8,276 -3.75 0.0160
2019-01-31 2018-12-31 13F VISTRA ENERGY COM 92840M102 375,636 5,883 1.59 8,598 -6.53 0.0187
2018-11-07 2018-09-30 13F VISTRA ENERGY COM 92840M102 369,753 -4,862 -1.30 9,199 3.79 0.0178
2018-08-06 2018-06-30 13F VISTRA ENERGY COM 92840M102 374,615 143,183 61.87 8,863 83.84 0.0179
2018-05-02 2018-03-31 13F VISTRA ENERGY COM 92840M102 231,432 357 0.15 4,821 13.89 0.0101
2018-02-09 2017-12-31 13F VISTRA ENERGY COM 92840M102 231,075 -721 -0.31 4,233 -2.29 0.0086
2017-11-06 2017-09-30 13F VISTRA ENERGY COM 92840M102 231,796 19,142 9.00 4,332 21.34 0.0094
2017-08-02 2017-06-30 13F VISTRA ENERGY COM 92840M102 212,654 212,654 3,570 0.0081
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.