Vistra Corp.
US ˙ NYSE ˙ US92840M1027

SecurityVST / Vistra Corp.
InstitutionBoston Partners
Latest Disclosed Ownership16,366 shares
Latest Disclosed Value $ 2,460,302
Boston Partners reports 7.07% increase in ownership of VST / Vistra Corp.

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 16,366 shares of Vistra Corp. (US:VST) valued at $2,460,301 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 15,286 shares of Vistra Corp.. This represents a change in shares of 7.07% during the quarter. The current value of the position is $2,517,091 USD.

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)
2026-05-11 2026-03-31 13F VISTRA COM 92840M102 16,366 1,080 7.07 2,460 -0.24 0.0011
2026-02-13 2025-12-31 13F VISTRA COM 92840M102 15,286 -445 -2.83 2,466 -19.99 0.0026
2025-11-13 2025-09-30 13F VISTRA COM 92840M102 15,731 -60 -0.38 3,082 0.72 0.0032
2025-08-12 2025-06-30 13F/A-1 VISTRA COM 92840M102 15,791 -4,252 -21.21 3,060 30.05 0.0034
2025-08-07 2025-06-30 13F VISTRA COM 92840M102 15,791 -4,252 3,060 0.0014
2025-05-13 2025-03-31 13F VISTRA COM 92840M102 20,043 20,043 2,354 0.0028
2022-05-09 2022-03-31 13F VISTRA COM 92840M102 0 -370,851 -100.00 0 -100.00
2022-02-04 2021-12-31 13F VISTRA COM 92840M102 370,851 -255,335 -40.78 8,445 -21.14 0.0102
2021-11-05 2021-09-30 13F VISTRA COM 92840M102 626,186 -15,245 -2.38 10,709 -10.01 0.0136
2021-08-12 2021-06-30 13F VISTRA COM 92840M102 641,431 -2,323,182 -78.36 11,900 -77.30 0.0152
2021-05-10 2021-03-31 13F VISTRA COM 92840M102 2,964,613 -18,407,475 -86.13 52,412 -87.53 0.0703
2021-02-10 2020-12-31 13F/A-1 VISTRA COM 92840M102 21,372,088 319,330 1.52 420,176 5.82 0.6535
2021-02-04 2020-12-31 13F VISTRA COM 92840M102 21,372,088 319,330 420,176 252,080.6254
2020-11-13 2020-09-30 13F/A-1 VISTRA COM 92840M102 21,052,758 2,194,187 11.63 397,054 13.06 0.7230
2020-11-09 2020-09-30 13F VISTRA COM 92840M102 18,858,571 0 351,196 257,819.6992
2020-08-12 2020-06-30 13F VISTRA ENERGY COM 92840M102 18,858,571 -1,725,496 -8.38 351,196 6.93 0.6451
2020-05-13 2020-03-31 13F VISTRA ENERGY COM 92840M102 20,584,067 7,342,715 55.45 328,447 7.90 0.6523
2020-02-06 2019-12-31 13F/A-1 VISTRA ENERGY COM 92840M102 13,241,352 2,468,062 22.91 304,412 5.70 0.4026
2020-02-05 2019-12-31 13F VISTRA ENERGY COM 92840M102 13,241,352 2,468,062 304,412 171,149.3173
2019-11-20 2019-09-30 13F/A-1 VISTRA ENERGY COM 92840M102 10,773,290 -1,393,092 -11.45 287,983 4.55 0.3900
2019-11-08 2019-09-30 13F VISTRA ENERGY COM 92840M102 12,169,548 3,166 275,795 0.3648
2019-08-26 2019-06-30 13F/A-1 VISTRA ENERGY COM 92840M102 12,166,382 4,514,742 59.00 275,443 38.29 0.3612
2019-08-09 2019-06-30 13F VISTRA ENERGY COM 92840M102 12,166,570 4,514,930 275,448
2019-05-13 2019-03-31 13F/A-1 VISTRA ENERGY COM 92840M102 7,651,640 -1,776,181 -18.84 199,172 -7.71 0.2639
2019-05-03 2019-03-31 13F VISTRA ENERGY COM 92840M102 7,651,640 -1,776,181 199,172
2019-02-07 2018-12-31 13F VISTRA ENERGY COM 92840M102 9,427,821 6,071,619 180.91 215,803 158.44 0.3101
2018-11-14 2018-09-30 13F VISTRA ENERGY COM 92840M102 3,356,202 31,028 0.93 83,502 6.14 0.0970
2018-08-03 2018-06-30 13F VISTRA ENERGY COM 92840M102 3,325,174 3,325,174 78,674 0.0943
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.