Biggest earnings gap-ups

Companies whose shares rose at least 10% across the two-session move spanning the report date — roughly the largest one in ten reactions in our catalog. The window is the two sessions spanning the report date, because filings carry a date and not a time — a company that reports before the open moves that day, one that reports after the close moves the next. It is a record of what happened, not a judgement of the result. Report dates are established from the company’s own SEC filings, and a quarter whose filing we do not hold is left out rather than guessed at.

40 covered companies were left out of this ranking because their last price predates 2026-09-28 (APGE, ATAI, AVB, CBC, CCRN, CPRX, CRNX, EA, ECHO, EEX, ESPR, FBRX, and 28 more), more than 3 trading sessions behind the 2026-10-01 price the rest of the catalog carries. The reaction here is measured from two closing prices around the report date, so a company whose price series stopped updating would show a move that is no longer its most recent one. Those companies keep the price on their own page, with their own as-of date.

Ranked by reaction, AVITA Medical, Inc. (RCEL) leads the covered catalog at +73.8%.

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Data: SEC EDGAR (filings) + market data (fundamentals, delayed daily-close). Every figure is shown with its as-of date on the company page; a company with no data for this metric is excluded from the ranking, never estimated.

Last updated 2026-10-02 — rankings shift as the underlying data refreshes.

Informational only — NOT financial advice. All figures are delayed daily-close data from SEC EDGAR & market data, shown with their as-of date.