IV Crush After Earnings: How Much Do Options Really Drop?

Summary

IV crush is the rapid collapse in implied volatility that happens the morning after an earnings announcement. Options can lose 30-70% of their value overnight even if the stock moves in your favor. Understanding the magnitude and mechanics of IV crush is essential for anyone trading around earnings.

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You buy AAPL $190 calls for $8.00 the day before earnings. Apple beats estimates, the stock opens up 2%, and your calls are worth $6.50. You were right on direction and still lost money. Welcome to IV crush.

How Much Does IV Actually Drop?

The magnitude depends on the stock, but here are real-world ranges from recent earnings cycles:

| Stock | Pre-Earnings IV | Post-Earnings IV | IV Drop | AAPL38%22%-42% TSLA75%42%-44% AMZN45%25%-44% MSFT32%19%-41% META52%28%-46% | NFLX | 58% | 30% | -48% |

The average IV crush across large-cap tech is roughly 40-50%. Smaller, more volatile stocks can see 60-70% IV drops.

Why It Happens

Before earnings, nobody knows the result. This uncertainty is priced as elevated IV. The moment the numbers come out, the mystery is resolved. IV reverts toward its normal level because the catalyst is gone.

Think of it like insurance. The day before a hurricane, insurance premiums are sky-high. The day after it passes, premiums drop back. The risk is resolved.

The Math Behind the Loss

A $190 call on AAPL with 5 DTE might have these Greeks before earnings:

  • Vega: 0.12 (the call gains $0.12 for each 1-point rise in IV)
  • Delta: 0.50

    • If IV drops 16 points (from 38% to 22%):

    Vega loss: 0.12 × 16 = -$1.92

    If the stock rises $3 (a 1.6% move):

    Delta gain: 0.50 × $3 = +$1.50

    Net change: +$1.50 - $1.92 = -$0.42 per share, or -$42 per contract

    You were right on direction and still lost $42 per contract. The IV crush overwhelmed the directional gain.

    Which Stocks Crush Hardest?

    Stocks with the highest pre-earnings IV relative to their normal IV crush the hardest. This ratio is called the IV rank or IV percentile.

    High crushers tend to be:

  • Momentum names with cult followings (TSLA, PLTR, RIVN)
  • Growth stocks where guidance matters more than the quarter (SNOW, CRWD)
  • Stocks with binary outcomes like FDA decisions or major contract announcements

    • Low crushers include:

  • Staples and utilities (PG, JNJ, SO) that rarely surprise
  • Banks during normal cycles (JPM, BAC) where the results are well-telegraphed

    • How to Profit From IV Crush

    The most direct way is to sell options before earnings and let the crush work for you. Iron condors, short strangles, and credit spreads all benefit when IV collapses.

    Example iron condor on AAPL:

  • Sell $195 call / Buy $200 call
  • Sell $185 put / Buy $180 put
  • Credit received: $2.40

    • If AAPL stays between $185-$195 after earnings, the IV crush kills the remaining premium in both spreads. You keep most of the $2.40 credit.

    Protecting Against IV Crush as a Buyer

    If you must buy options before earnings, use debit spreads instead of naked calls or puts. The short leg offsets part of the vega loss. A $190/$195 call spread loses much less to IV crush than a naked $190 call because you are short vega on the $195 leg.

    OptionsPilot tracks IV levels across expirations so you can compare current pre-earnings IV to historical averages and gauge how severe the crush is likely to be.