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VST −13.9%: one of its biggest daily moves this year. Vistra Corp. moved 14.4 points less than its sector, on 2.7× its usual volume.

2026-11-04 · VST

VST −13.9%: one of its biggest daily moves this year

Vistra Corp. moved 14.4 points less than its sector, on 2.7× its usual volume.

The story in plain words

Wednesday, November 4, 2026. VST −13.9%: one of its biggest daily moves this year. Vistra Corp. moved 14.4 points less than its sector, on 2.7× its usual volume.

What the data shows for Vistra Corp. (VST): VST −13.9% today. Its sector fund (XLU) +0.5% today. S&P 500 (SPY) +1.7% today.

Worked out from that data: 14.4 points less than its sector. Volume 2.7× its 20-day average. Its biggest daily move in the past 250 trading days. After the 4 most similar VST days since Nov 17, 2021, the stock was higher 5 days later 3 of 4 times (History, not a forecast).

Possible contributors. These line up in time with the move; they are not confirmed causes: News: “VST, CEG Stocks Drop As Election Outcome Hits Merchant Power Generators” (Published around the move. Timing only, not a confirmed cause). News: “Vistra plunges 13.5% as Texas election rattles AI power trade, KeyBanc downgrades” (Published around the move. Timing only, not a confirmed cause).

About the company: Vistra Corp. trades as VST and is part of the S&P 500, in the Utilities sector (Electric Utilities), headquartered in Irving, Texas, founded in 2016.

This is one of CookieStocks’ daily stock stories about unusually large one-day price moves in S&P 500 stocks, measured against each stock’s own history, its sector and its usual volume. Stories are found automatically each trading day from market data and SEC filings, and every claim is labelled as observed, calculated or a possible contributor. Statistics only, not investment advice.

Prove it

Every claim on the graphic, labelled: observed (straight from the data), calculated (worked out from it), or possible contributor (lines up in time, not a confirmed cause).

  • OBSERVED
    VST −13.9% todayNov 4, 2026, 4:35 PM ET
  • OBSERVED
    Its sector fund (XLU) +0.5% todayNov 4, 2026, 4:35 PM ET
  • CALCULATED
    14.4 points less than its sectorHow: stock return − sector fund return · Nov 4, 2026, 4:35 PM ET
  • OBSERVED
    S&P 500 (SPY) +1.7% todayNov 4, 2026, 4:35 PM ET
  • CALCULATED
    Volume 2.7× its 20-day averageHow: today’s volume ÷ average of the last 20 days · Nov 4, 2026, 4:35 PM ET
  • CALCULATED
    Its biggest daily move in the past 250 trading daysHow: share of past daily moves smaller in size · Nov 4, 2026, 4:35 PM ET
  • POSSIBLE CONTRIBUTOR
    News: “VST, CEG Stocks Drop As Election Outcome Hits Merchant Power Generators”Published around the move. Timing only, not a confirmed cause. · Nov 4, 2026, 1:10 PM ET
  • POSSIBLE CONTRIBUTOR
    News: “Vistra plunges 13.5% as Texas election rattles AI power trade, KeyBanc downgrades”Published around the move. Timing only, not a confirmed cause. · Nov 4, 2026, 1:01 PM ET
  • CALCULATED
    After the 4 most similar VST days since Nov 17, 2021, the stock was higher 5 days later 3 of 4 timesHistory, not a forecast. · How: same-company days with a move of similar size and direction

Vistra Corp. (VST) financials and filings →

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Statistics only, not investment advice. Past moves don’t predict future ones. Data as of Nov 4, 2026, 4:35 PM ET.