Vistra Corp. (VST)
VST moved a median of -0.12% 30 minutes after news, and -0.13% by the close. How VST actually reacts to news — the realized, point-in-time move the market made, measured across 418 labeled events over the last three years with zero look-ahead.
VST’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.04% | 52% | 416 |
| 30-min | -0.12% | 45% | 417 |
| 60-min | -0.07% | 48% | 417 |
| to close | -0.13% | 47% | 417 |
| Middle 50% of VST reactions | -0.97% to +0.54% |
|---|---|
| Median reaction (30-min) | -0.12% |
| Measured reactions | 418 |
Half of all Vistra Corp. news events land between -0.97% and +0.54% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How VST reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 23 | -0.52% | 17% | +0.25% |
| Coverage initiations | 43 | -0.60% | 40% | -0.27% |
| Rating reiterations | 87 | +0.03% | 51% | -0.40% |
| Price-target raises | 34 | +0.01% | 50% | -0.22% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 2 further classes were observed with fewer than 10 measured events and are not published. See how VST ranks against every other measured name →
That’s how VST usually reacts — get an email when it moves on news →Email me when VST moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to VST's baseline. Nothing else.
Recent VST events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Vistra Announces Redemption of All Outstanding Series A Preferred Stock | Press release | PR Newswire | +0.35% | -0.67% | |
| Form 8-K Vistra Corp. For: Sep 30 | SEC filing · Form 8-K | SEC EDGAR | -0.40% | +1.09% | |
| Vistra to Report Third Quarter Results on Nov. 6, 2026 | Press release | PR Newswire | -3.15% | -1.08% | |
| Form 8-K Vistra Corp. For: Sep 24 | SEC filing · Form 8-K | SEC EDGAR | +0.25% | -0.36% | |
| Vistra Announces Registered Offering of Junior Subordinated Notes | Press release | PR Newswire | +0.45% | -1.97% | |
| Vistra Prices Registered Offering of $1.5 Billion of Junior Subordinated Notes | Press release | PR Newswire | -0.90% | -0.30% | |
| Form S-3ASR Vistra Corp. | SEC filing · Form S-3ASR | SEC EDGAR | +0.90% | +0.73% | |
| Form 10-Q Vistra Corp. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | — | — | |
| Form 8-K Vistra Corp. For: Aug 07 | SEC filing · Form 8-K | SEC EDGAR | -0.75% | +2.08% | |
| Vistra Reports Second Quarter 2026 Results | Press release | PR Newswire | -0.75% | +2.08% | |
| Vistra Declares Dividend on Common Stock and Series A Preferred Stock | Press release | PR Newswire | +0.67% | +0.42% | |
| Form 8-K Vistra Corp. For: Jul 10 | SEC filing · Form 8-K | SEC EDGAR | -2.69% | -3.36% | |
| Form 8-K Vistra Corp. For: Jul 14 | SEC filing · Form 8-K | SEC EDGAR | +1.16% | -1.58% | |
| Vistra to Report Second Quarter Results on Aug. 7, 2026 | Press release | PR Newswire | -0.07% | +2.12% | |
| Form 8-K Vistra Corp. For: Jun 24 | SEC filing · Form 8-K | SEC EDGAR | -0.19% | -1.82% | |
| TXU Energy's Beat the Heat Program Returns to Help Texas Families Stay Cool and Safe This Summer | Press release | PR Newswire | +0.04% | +0.07% | |
| Form 10-Q Vistra Corp. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -1.35% | -4.34% | |
| Form 8-K Vistra Corp. For: May 07 | SEC filing · Form 8-K | SEC EDGAR | +1.32% | -5.58% | |
| Vistra Reports First Quarter 2026 Results | Press release | PR Newswire | +1.32% | -5.58% | |
| Form 8-K Vistra Corp. For: Apr 29 | SEC filing · Form 8-K | SEC EDGAR | -0.56% | -1.61% | |
| Vistra Declares Dividend on Common Stock, Series B Preferred Stock, and Series C Preferred Stock | Press release | PR Newswire | +0.03% | -1.91% | |
| Form 8-K Vistra Corp. For: Apr 22 | SEC filing · Form 8-K | SEC EDGAR | -0.84% | -4.39% | |
| Vistra Announces Private Offering of Senior Notes | Press release | PR Newswire | -0.37% | -2.57% | |
| Vistra Prices Private Offering of $4.0 Billion of Senior Notes | Press release | PR Newswire | +2.15% | -2.01% | |
| Vistra to Report First Quarter Results on May 7, 2026 | Press release | PR Newswire | -0.31% | -0.02% | |
| Form ARS Vistra Corp. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.46% | +2.64% | |
| Form DEF 14A Vistra Corp. For: Apr 29 | SEC filing · Form DEF | SEC EDGAR | +0.46% | +2.64% | |
| Form DEFA14A Vistra Corp. | SEC filing · Form DEFA14A | SEC EDGAR | +0.46% | +2.64% | |
| Vistra Achieves Investment-Grade Credit Ratings from S&P and Fitch | Press release | PR Newswire | -0.01% | +0.19% | |
| Vistra Expands Residential Battery Aggregation Program with Enphase Energy | Press release | PR Newswire | -0.11% | +0.91% | |
| Form 10-K Vistra Corp. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.98% | -0.63% | |
| Form 8-K Vistra Corp. For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | -0.45% | +3.19% | |
| Vistra Reports Fourth Quarter and Full-Year 2025 Results | Press release | PR Newswire | -0.45% | +3.19% | |
| Vistra Declares Dividend on Common Stock and Series A Preferred Stock | Press release | PR Newswire | -0.33% | -0.52% | |
| Form 8-K Vistra Corp. For: Jan 22 | SEC filing · Form 8-K | SEC EDGAR | -1.37% | -0.22% | |
| Vistra to Report Fourth Quarter and Full Year 2025 Results on Feb. 26 | Press release | PR Newswire | +2.17% | -1.11% | |
| Vistra Announces Private Offering of Senior Secured Notes | Press release | PR Newswire | +1.87% | +4.80% | |
| Vistra Prices Private Offering of $2.250 Billion of Senior Secured Notes | Press release | PR Newswire | -0.57% | -1.48% | |
| Form 8-K Vistra Corp. For: Jan 09 | SEC filing · Form 8-K | SEC EDGAR | +0.89% | -0.91% | |
| Vistra and Meta Announce Agreements to Support Nuclear Plants in PJM and Add New Nuclear Generation to the Grid | Press release | PR Newswire | +0.08% | -3.43% | |
| Form 8-K Vistra Corp. For: Dec 31 | SEC filing · Form 8-K | SEC EDGAR | +1.21% | +0.31% | |
| Quantum Capital Group Announces Sale of Cogentrix to Vistra for $4.7 Billion | Press release | GlobeNewswire | +1.21% | +0.31% | |
| Vistra Adds to its Industry-Leading Generation Portfolio with Acquisition of Cogentrix | Press release | PR Newswire | +1.21% | +0.31% | |
| Form 8-K Vistra Corp. For: Dec 17 | SEC filing · Form 8-K | SEC EDGAR | +0.39% | +0.31% | |
| Form 8-K Vistra Corp. For: Nov 17 | SEC filing · Form 8-K | SEC EDGAR | +0.47% | -0.24% | |
| Form 10-Q Vistra Corp. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +1.17% | +7.00% | |
| TXU Energy Expands its Winter Warmth Program to Support Texans in Need | Press release | PR Newswire | +0.36% | +5.83% | |
| Form 8-K Vistra Corp. For: Nov 06 | SEC filing · Form 8-K | SEC EDGAR | +0.49% | +1.16% | |
| Vistra Reports Third Quarter 2025 Results, Narrows 2025 Guidance, and Initiates 2026 Guidance | Press release | PR Newswire | +0.49% | +1.16% | |
| Form S-8 Vistra Corp. | SEC filing · Form S-8 | SEC EDGAR | -0.87% | -1.93% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the VST section they belong to.
Where else VST is measured.
VST earnings → · Analyst actions → · SEC filings →
Other Utilities names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| SUMMER ENERGY HLDGS INC (SUME) | 419 | 0.00% | 23% |
| Public Service Enterprise Group Incorporated (PEG) | 418 | +0.05% | 54% |
| Centrais Electricas Brasileiras S A American Depositary Shares (Each representing one Common Share) (EBR) | 413 | 0.00% | 36% |
| SKY SOLAR HOLDINGS LTD AMERICA (SKYS) | 409 | 0.00% | 40% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Utilities names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Vistra Corp.'s median reaction calculated?
Every labeled VST news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 418 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 45% of VST's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does VST's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.