Rubric Capital Management LP: VISTRA CORP (VST): Quarterly 13F Position History
As of Q1 2026, Rubric Capital Management LP reported 1,500,000 shares of VISTRA CORP (VST), worth $225.5M and representing 2.8% of its 13F equity book. Quarter-over-quarter share count change: 500,000 (-25.0%) . The position first appeared in Q1 2023 and has been disclosed across 13 13F-HR filings in Pactolio's tracked window.
- 1,500,000Shares Held (Latest Filing)
- $225.5MReported Market Value (Latest Filing)
- 2.8%Portfolio Weight (% of 13F Equity Book)
- 500,000Quarter-over-Quarter Share Change
- -$97.2MQuarter-over-Quarter Value Change
- 2,813,221Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 13 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 1,500,000 | 500,000 | -25.0% | $225.5M | 2.8% | $150.3 |
| Q4 2025 | 2,000,000 | +2,000,000 | — | $322.7M | 3.9% | $161.3 |
| Q3 2025 | 0 | 1,424,803 | -100.0% | $0 | 0.0% | — |
| Q2 2025 | 1,424,803 | +478,834 | +50.6% | $276.1M | 4.4% | $193.8 |
| Q1 2025 | 945,969 | +945,969 | — | $111.1M | 2.0% | $117.4 |
| Q4 2024 | 0 | 2,125,000 | -100.0% | $0 | 0.0% | — |
| Q3 2024 | 2,125,000 | +797,894 | +60.1% | $251.9M | 4.1% | $118.5 |
| Q2 2024 | 1,327,106 | +113,108 | +9.3% | $114.1M | 3.0% | $86.0 |
| Q1 2024 | 1,213,998 | +1,213,998 | — | $84.6M | 2.5% | $69.7 |
| Q4 2023 | 0 | 602,189 | -100.0% | $0 | 0.0% | — |
| Q3 2023 | 602,189 | 2,211,032 | -78.6% | $20.0M | 0.8% | $33.2 |
| Q2 2023 | 2,813,221 | +352,556 | +14.3% | $73.8M | 3.2% | $26.3 |
| Q1 2023 | 2,460,665 | — | — | $59.1M | 2.4% | $24.0 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Rubric Capital Management LP first disclose a VST position in 13F-HR filings?
Rubric Capital Management LP first reported VISTRA CORP (VST) on its 13F-HR filing for the period ending 2023-03-31 (Q1 2023). The position has appeared on 13 reported quarters within Pactolio's tracked window.
What was Rubric Capital Management LP's most recent quarter-over-quarter share-count change in VST?
Between Q4 2025 and Q1 2026, Rubric Capital Management LP reduced its VST position by 500,000 shares (-25.0%), leaving 1,500,000 shares at a market value of $225.5M.
Does the implied price-per-share represent Rubric Capital Management LP's cost basis in VST?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.