IV crush is the sharp, rapid decline in implied volatility that occurs immediately after a major uncertain event (like earnings, FDA decisions, or rate announcements) is resolved, causing option prices to fall dramatically even if the underlying asset hasn’t moved much.
Why IV Crush Happens
Before a major event, traders don’t know the outcome. This uncertainty drives implied volatility (IV) high. Options are expensive because the range of potential outcomes is wide.
When the event is announced:
- Uncertainty vanishes
- IV collapses
- Option premiums fall sharply
- This happens even if the stock/currency barely moved
The math: Option price = intrinsic value + time value
Before earnings (high IV):
- INFY call option: ₹100 intrinsic + ₹45 time value = ₹145 premium
- IV is 45%
After earnings (low IV):
- INFY call option: ₹100 intrinsic + ₹8 time value = ₹108 premium
- IV drops to 15%
The call lost ₹37 in premium even though INFY didn’t move. That’s IV crush.
Real Example: INFY Earnings
Let’s walk through an actual scenario:
Before earnings (one day prior):
- INFY stock: ₹1,900
- INFY ₹1,950 call option: ₹75 premium
- Implied volatility: 48%
Scenario: You buy the ₹1,950 call for ₹75, betting the stock beats and rallies.
After earnings announced:
- INFY stock: ₹1,920 (only +1% move)
- INFY ₹1,950 call option: ₹22 premium
- Implied volatility: 12%
Your loss:
- You paid ₹75. It’s worth ₹22. You lost ₹53 (-71%)
- The stock moved in your direction (up), but your call lost value due to IV crush
IV Crush vs. Directional Loss
This is critical: IV crush and directional loss are different.
| Scenario | Your Bet | Stock Move | IV Change | Result |
|---|---|---|---|---|
| IV crush, direction right | Buy call, stock up | +2% | 45% ↓ 15% | Loss |
| IV crush, direction wrong | Buy call, stock down | -2% | 45% ↓ 15% | Big loss |
| No IV crush, direction right | Buy call, stock up | +5% | 45% → 45% | Win |
| No IV crush, direction wrong | Buy call, stock down | -2% | 45% → 45% | Small loss |
IV crush is a hidden killer. You can be right on direction and still lose money.
How Professional Traders Use IV Crush
Strategy 1: Sell options before the event (short straddle)
A short straddle means:
- Sell a call (profit if stock doesn’t go up much)
- Sell a put (profit if stock doesn’t go down much)
- Collect premium from both
Example:
- Sell INFY 1,900 call for ₹45
- Sell INFY 1,900 put for ₹45
- Total premium collected: ₹90
After earnings (INFY at 1,910):
- Buy back the call for ₹15
- Buy back the put for ₹12
- Total cost to close: ₹27
Profit: ₹90 - ₹27 = ₹63 (70% return in one day)
The stock moved 0.5%. You made 70% because IV crashed.
Strategy 2: Sell before, buy after
- Sell options when IV is high (before event)
- Buy options back when IV is low (after event)
- Keep the premium difference
The Risk: IV Crush Backfires
IV crush kills option sellers when the stock moves far.
Short straddle gone wrong:
You sell the INFY 1,900 straddle (same as above). After earnings:
- INFY crashes to 1,800
- Your short call: Expires worthless (good)
- Your short put: Now ₹100 in the money, worth ₹110
Your loss:
- You collected ₹90
- Your put cost ₹110 to buy back
- Loss: ₹20
You lose even though IV crashed, because the directional move was too large.
This is why short straddles are risky—they profit from no movement + IV crush, but a big move destroys you.
IV Crush Affects Different Strategies
| Strategy | IV Crush Effect | Risk |
|---|---|---|
| Long calls | Very negative | Lose money despite right direction |
| Long puts | Very negative | Same as long calls |
| Short calls | Very positive | Profit from IV crash |
| Short puts | Very positive | Profit from IV crash |
| Spreads | Mixed | Depends on which leg is long/short |
Historical IV Crush Examples
Apple earnings (January 2022):
- Pre-earnings IV: 48%
- Post-earnings IV: 18%
- AAPL stock: +1.3% up
- Call buyers: Lost 50%+ despite stock going up
TCS earnings (April 2023):
- Pre-earnings IV: 42%
- Post-earnings IV: 14%
- TCS stock: +2% up
- Call buyers: Lost 40%+ despite being right on direction
US FOMC announcement (March 2023):
- Pre-announcement IV: 52%
- Post-announcement IV: 18%
- Stock index: +1.5% up
- Call buyers: Lost 60%+ on direction-neutral move
The IV Crush Calendar
IV crush happens most predictably with:
- Earnings announcements (company-specific, very sharp IV drops)
- Fed/Central Bank rate decisions (market-wide, extreme IV swings)
- FDA drug approval/rejection (binary outcomes, massive IV crush)
- Economic data releases (payrolls, inflation, always cause IV drops)
- Election results (political uncertainty, sharp IV collapse)
Defending Against IV Crush
If you’re bullish going into earnings:
- Don’t buy calls to express your view
- Instead: Buy a call spread (e.g., long ₹1,900 call, short ₹1,950 call)
- The short call benefits from IV crush, offsetting your long call’s loss
If you expect no movement:
- Don’t hold long options through the event
- Sell options or exit positions before the event
If you want to own the stock:
- Buy the stock directly instead of call options
- Skip options entirely; let IV crush pass you by
IV Crush and Earnings
Earnings are the most predictable IV crush event.
Pattern:
- 1 week before earnings: IV rises (traders anticipate volatility)
- 1 day before earnings: IV peaks
- 5 minutes after earnings: IV collapses 50%+
If you buy options 1 week before earnings, you’re buying at elevated IV. Even if you’re right on the direction, IV crush can turn a winner into a loser.
The “smart” play: Sell options 1 week before, buy them back 1 day after the announcement.
How PipJournal Helps
While PipJournal is built for forex traders, options traders need the same discipline. Log your options trades: entry date, IV level, exit date, IV level at exit. Track: “How many trades did I lose due to IV crush despite being right on direction?” Over 20+ trades, you’ll see if IV crush is your biggest killer. That insight drives strategy changes.
