IV crush: why an option can lose money even when you called the earnings move

Implied volatility usually rises into earnings and falls right after. How that works and how to estimate the move the market is already pricing.

By AnkushAI Editorial, Education team · Oct 30, 2026 · 1 min read

Implied volatility (IV) is the level of future movement that option prices imply. Before a known event like an earnings report, uncertainty is high, so IV tends to rise. After the report, the uncertainty is gone and IV usually drops, often sharply. That drop is called IV crush.

Why it hurts buyers

An option's price includes extrinsic value, and much of it comes from implied volatility. When IV falls, that value shrinks. If the stock moves in your direction but by less than the market had priced, the IV drop can outweigh the gain from the move. You were right on direction and still lost.

The move the market expects

A common rough estimate of the expected earnings move is the price of the at-the-money straddle (one call plus one put at the same strike) for the first expiration after the report, divided by the stock price. If the straddle costs 6% of the stock price, the market is roughly pricing a 6% move either way.

That gives you a bar to clear:

• If you expect a move clearly bigger than what is priced, long options may make sense.
• If you expect a smaller move, buying options into the event is fighting the math.

Ways traders adapt

• Use spreads. Buying one option and selling another reduces vega exposure, so the crush hurts less.
• Compare IV to its own history. IV rank or percentile shows whether options are expensive relative to the past year.
• Decide before the report whether you are trading the event or the trend after it. They are different trades.

None of this predicts the direction of the report. It tells you what is already in the price.

Educational, not financial advice.

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