Key Takeaway: IV crush is the rapid collapse of implied volatility after a major event like earnings. If you buy options before earnings and hold through the announcement, you will almost always lose money to IV crush — even if the stock moves in your direction.
Implied volatility (IV) is the market's estimate of how much a stock will move. Before earnings, before FDA decisions, before major economic reports — traders pile into options to position for the big move. All that buying inflates IV like a balloon.
Then the event happens. The uncertainty is gone. Whether the stock moves up, down, or sideways, that uncertainty premium collapses. The balloon pops. This is IV crush.
A stock might jump 5% on earnings, and an option buyer who picked the right direction still loses money. How? Their options lost more value from IV declining than they gained from the directional move.
Market makers price options based on uncertainty. Before earnings, nobody knows what's coming — not analysts, not the CEO, not the quants at the biggest hedge funds. That uncertainty has a price. The more uncertain the event, the higher IV climbs.
For high-growth tech stocks, IV before earnings often runs 50%, 80%, even 100%+ — several times its normal level. The options market is saying: "we expect a big move, and we're charging accordingly."
Say a stock is at $100 with IV at 80% into earnings. You buy the at-the-money call for $5.
Earnings come out. The stock rallies 4%. Your call should be worth more, right?
If IV drops from 80% to 30% (the stock's normal IV), your $5 call might now be worth $3 — despite the stock moving in your favor. The IV crush ate $3 of value while the directional move only added $1.
This is why experienced traders say buying options into earnings is buying a lottery ticket with negative expected value unless you have very strong conviction on a move that will overwhelm the IV compression.
Before any binary event, check these three things:
Instead of suffering IV crush, consider selling it.
Short Straddle / Short Strangle: Sell both a call and put before earnings. You collect the inflated premium. If the stock stays within the implied move range, both options expire worthless and you keep the premium.
Iron Condor: Same idea but with defined risk — sell the straddle and buy wings to cap your maximum loss. Preferred by most retail traders because of the hard stop on losses.
Calendar Spread: Buy a longer-dated option and sell the near-term option into earnings. The front option gets crushed; the back option retains more value. You profit from the differential.
Risk: All of these strategies have limited profit potential and can blow up on a massive earnings surprise. A 20% overnight gap will destroy a short volatility position. Always size appropriately.
IV crush isn't a bug — it's the market correctly removing priced-in uncertainty after it resolves. The mistake is being on the wrong side of it.
Before buying options into earnings, ask yourself: what size move does this stock need just for me to break even? If the answer is bigger than the stock typically moves, the math is working against you.