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Earnings surprise and the reaction

An earnings surprise is how far a company’s reported profit landed from the analyst forecast; the reaction is what its share price actually did afterwards — and the two disagree far more often than people expect.

Before a company reports, analysts publish estimates of its earnings per share, and the average of those becomes the number the result is measured against. Reporting above it is a "beat", below it a "miss", and the gap between the two is the earnings surprise. It is a comparison against a forecast, not a verdict on the business: a company can beat a low estimate while shrinking, or miss a high one while growing quickly.

The reaction is a separate fact — what the share price did around the report. The two agree less often than the words suggest. In our own catalog, nearly half of all companies that beat the estimate saw their shares fall anyway, so a beat followed by a drop is close to a coin flip rather than an anomaly. The usual reasons are that the result was already expected and priced in, that the company guided future quarters lower alongside a good past quarter, or simply that the whole market fell that day. A price move records what happened; it does not explain why.

Measuring the reaction needs the date the company actually reported, which is not the same as the last day of the quarter it reported on — those are usually six to eight weeks apart. stocks-llm establishes the report date from the company’s own SEC filings and measures the move across the two sessions spanning it, because filings carry a date but not a time: a company reporting before the opening bell moves that day, one reporting after the close moves the next. Where we hold no filing to establish the date, the quarter is left out rather than guessed at. None of this is a forecast of the next report.

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Beat earnings and dropped anyway →

Related terms

  • Earnings per share (EPS) — Earnings per share (EPS) is a company’s net profit divided by its shares outstanding — the profit attributable to each single share.
  • Net profit margin — Net profit margin is the share of every revenue dollar a company keeps as bottom-line profit, after all costs, interest, and taxes.
  • Gross margin — Gross margin is the share of revenue left after the direct cost of producing a company’s goods or services.
  • Operating margin — Operating margin is the share of revenue a company keeps as operating profit, after production costs and operating expenses but before interest and taxes.
  • Return on equity (ROE) — Return on equity (ROE) measures how much profit a company generates for each dollar of shareholders’ equity.

See more terms in the stocks-llm glossary.

Informational only — NOT financial advice. This is an educational definition, not a recommendation to buy or sell anything. Metrics on stocks-llm are delayed data and may be missing or stale. Always verify information independently and consult a qualified financial professional before making any investment decision.

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Informational only — NOT financial advice.

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