ApexVol Research Team Quantitative options research. All calculations use live institutional-grade data — the same source professional volatility desks use.
Reviewed by
Ryan Silk, ApexVol Founder Reviewed for technical accuracy. 10+ years trading options; built ApexVol's pricing engine, Greeks model and IV-rank methodology.
Revised as market conditions and institutional data change. Last revised 2026-05-12. How we research →
Why this matters
IV crush occurs when implied volatility drops sharply (typically after earnings or events), causing option prices to collapse even if the stock moves in your direction. Options are priced for uncertainty. After the uncertainty resolves (earnings announcement), IV drops to normal levels, crushing option premiums regardless of stock direction.
Buying options right before earnings means paying peak implied volatility — the post-event IV crush can erase the premium even when the stock moves your way.
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Mistake 1, critical severity
Buying Options Before Earnings at High IV
Purchasing calls or puts right before earnings when IV is elevated. Stock moves in your direction but option barely profits or loses money.
The fix
Check IV rank before buying. If above 50%, use spreads to reduce vega exposure. Better yet, sell premium instead of buying it.
What it looks like. TSLA IV at 80% before earnings. Buy calls for $5.00. Stock rises 3% but IV drops 40%. Call worth $4.50 despite being right on direction.
Mistake 2, critical severity
Not Understanding the Expected Move
Options price in an expected move. If stock moves LESS than expected, both calls and puts lose money. Many traders don't calculate this.
The fix
Calculate expected move: Straddle price / Stock price = Expected %. Stock must move MORE than this to profit. Use our Event Analysis tool.
What it looks like. AAPL straddle costs $8 with stock at $150. Expected move is 5.3%. Stock moves 4% up. Both call and put buyers lose money.
Mistake 3, high severity
Using Wrong Expiration for Events
Using longer-dated options for earnings trades. IV crush affects the front-month most, but longer-dated options still lose significant value.
The fix
For earnings plays, use the nearest expiration after the event. This isolates the event and minimizes cost. Or sell premium using weeklies.
What it looks like. Buy 60-day call before earnings. Stock pops 8%. But call had 30% IV crush across all time value. Only modest profit despite big move.
Mistake 4, high severity
Double-Down After IV Crush
After losing to IV crush, buying more options at now-lower IV thinking they're cheap. Stock continues drifting, theta decay continues.
The fix
Once IV has crushed, the edge from volatility is gone. Either sell the remaining position or accept the loss. Don't compound mistakes.
What it looks like. Lost on earnings call. Buy more 'cheap' calls. Stock does nothing for 2 weeks. Theta decay takes another 40%. Double the loss.
Mistake 5, medium severity
Ignoring Term Structure
Not checking if near-term IV is elevated relative to longer-term. Can indicate event premium that will crush after the catalyst.
The fix
Compare front-month IV to back-month IV. If front is significantly higher, there's event premium. Either sell front or use calendar spreads.
What it looks like. Weekly IV at 60%, monthly at 40%. 20 points of 'event premium' in the weekly. After earnings, weekly IV drops to 35%. Massive crush.
The mechanics underneath these are worth an hour of your time.
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IV Crush Math Example
NVDA at $500, earnings tomorrow:
ATM call costs $25 (5% of stock price)
IV rank: 85% (very elevated)
Expected move: ~5%
Stock rises 4% to $520 (good move!)
IV drops 50% after earnings
Call now worth $22 - you lost $3 despite being right
Questions
Asked about this.
What is IV crush?
IV crush is the rapid decline in implied volatility after an anticipated event (like earnings) occurs. Options prices drop significantly because the uncertainty that was priced in is now resolved. A stock can move in your direction and you can still lose money due to IV crush.
How do I avoid IV crush?
To avoid IV crush: 1) Check IV rank before buying - if above 50%, use spreads instead of naked options, 2) Calculate the expected move - you need to beat it to profit, 3) Consider selling premium instead of buying when IV is high, 4) Use calendar spreads to exploit IV term structure differences.
