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Earnings Season

intermediate7 min read

How quarterly results move stocks, why expectations matter more than numbers, and how to prepare.

Earnings season is the period each quarter when listed companies report their financial results. Stocks often move sharply on these reports — but in a way that surprises beginners, because what moves a stock isn’t the raw numbers but how they compare to expectations.

The crucial, counter-intuitive principle: stocks move on results relative to expectations, not on whether the numbers are “good” or “bad” in absolute terms. The market is forward-looking and has already “priced in” the expected result, so what moves the price is the surprise — the gapA jump between one bar’s close and the next bar’s open. between actual and expected. This is why a company can report record profits and fall (because the market expected even more — a “miss”), and another can report a loss and rise (because the loss was smaller than feared — a “beat”). “Good news” already anticipated is not a positive catalyst; only news that differs from expectations moves the price. This also explains “buy the rumour, sell the news”: a stock often runs up before good results (anticipation) and falls after they’re confirmed (the surprise is gone, expectations were met or the run already captured it). For investors, the practical lessons: (1) judge results against expectations (analyst estimates, guidance), not in isolation; (2) watch guidance (the company’s outlook), which is often more market-moving than the past quarter’s numbers because markets care about the *futureA binding agreement to buy or sell at a set price on a future date.; and (3) beware the volatilityThe size of price swings — not their direction. crush* and sharp moves around earnings (from the optionsThe right, not the obligation, to buy or sell at a set price. track) — earnings are a known event with inflated uncertainty priced in. Don’t be fooled when a “great” result tanks a stock — expectations were the real benchmark all along.
ExampleA company posts its highest-ever quarterly profit — and the stock drops 8%. Why? Analysts expected even higher, and management’s guidance for next quarter was weak. The “great” numbers were a miss versus expectations, and the forward outlook disappointed. A beginner reading only “record profit” is baffled; one who understands expectations-vs-actual and guidance saw it coming.
Key takeawayStocks move on earnings relative to expectations (the surprise), not absolute numbers — expectations are already priced in, so record profits can fall (a miss) and a loss can rise (a beat). Watch guidance (the futureA binding agreement to buy or sell at a set price on a future date. matters most), expect “buy the rumour, sell the news,” and beware earnings-driven volatilityThe size of price swings — not their direction.. The benchmark is always expectations.
FAQs
Should I buy a stock before its earnings to catch a good result?

It’s risky — even a genuinely good result can drop the stock if it missed *expectations* or guidance disappoints, and options/volatility are inflated pre-earnings (a crush often follows). You’re essentially betting on a surprise *and* on how an already-anticipating market reacts. Many long-term investors simply hold through earnings per their thesis rather than trading the event; short-term earnings bets are a low-edge, high-variance game.