IV Crush: Why Your Earnings Calls Lose Money on Good News
Intermediate · 7 min read · Updated April 2026
You bought NVDA calls before earnings. The stock beat by $0.10 and rallied 3%. Your calls went red anyway. What happened? IV crush — the overnight collapse of implied volatility that punishes options buyers even when they're directionally right.
The mental model: a balloon
Implied volatility is the market’s bet on how much a stock will move before an option expires. Before earnings, nobody knows what will happen, so IV inflates like a balloon — options get expensive because the range of possible outcomes is huge.
The balloon inflates with uncertainty, then the air rushes out the second earnings are out.
The moment earnings are released, uncertainty resolves. Market makers re-price the entire options chain for the new, calmer baseline. All that extra premium you paid for the unknown? Gone by the morning bell.
A real example: NVDA earnings
Take a typical NVDA earnings setup. The stock is trading at $140 with one week to go. The at-the-money $140 call, expiring the Friday after earnings, is priced at $10.00.
That’s not a cheap option — IV on that call is around 85%, more than double the baseline IV of ~40% that NVDA trades at during calm stretches. You’re paying for an expected $10 move in either direction.
NVDA reports after the bell. They beat. Stock opens up 3% at $144.20 the next morning. You check your call: it’s worth $5.50 — you lost $450 per contract while being right.
How to price the implied move yourself
The straddle tells you what the market expects. Add the at-the-money call and put prices on the nearest weekly expiration. That total equals the implied move in either direction.
Example: $10 call + $9 put = $19 expected move
On a $140 stock, that’s a ~14% swing priced in.
If the actual move lands under the implied move, IV crush wins — option buyers lose, sellers collect. If it lands over, buyers win. This is the core math that distinguishes a profitable earnings play from a lottery ticket.
Three outcomes on earnings morning
Stock moves inside the implied range
IV collapses from ~85% to ~40%. Your long call or put loses 40–60% of its value even if you were directionally right.
Stock moves exactly at the implied range
IV still crushes. Breakeven at best — the cost of the options ate the directional gain.
Stock blasts past the implied range
The directional move overwhelms IV crush. Buyers print; the seller (that iron condor you sold) takes a full loss.
Three rules that keep wheel traders out of trouble
If you sell covered calls or cash-secured puts for income, IV crush works for you — as long as you position into it, not into it blindly. Three rules:
1. Never buy single-leg premium inside 5 days of earnings
Unless your thesis is pure direction (you’re willing to lose 100% for a potential 300%), don’t buy calls or puts into earnings. The implied move is almost always priced rich, and IV crush is a headwind you can’t beat without a big move.
2. Close or roll covered calls before the print
If you sold a covered call on stock you own and earnings are approaching, close it 1–2 days before. A surprise beat can gap the stock past your strike overnight, and you lose the upside without being able to react.
3. Sell iron condors or strangles at IV rank above 50
When IV rank is elevated, premium-selling strategies capture the crush. A 30-day iron condor on a ticker with IV rank 75 can collect 2–3x what the same condor pays on the same ticker at IV rank 20. Size it small — 1–3% of account per play — and take profits at 50% of max credit.
When to use IV crush — and when to stay out
Use it when…
- ✓You're selling premium (covered calls, CSPs, iron condors)
- ✓IV rank is above 50 on the ticker
- ✓A scheduled event — earnings, FDA, FOMC — is 1–7 days out
- ✓You're sized for loss: 1–3% of account per position
Avoid it when…
- ✗You're buying single-leg options into earnings without a directional edge
- ✗IV rank is below 30 — not enough premium to justify the risk
- ✗You can't monitor and close positions before the event
- ✗The ticker is a low-liquidity name with wide bid-ask spreads
When IV crush is your friend
Flip the framing. If you sold a $140/$150 NVDA call credit spread for $2.00 two days before earnings — IV rank 85, spread width $10, max risk $800 — and the stock rallied to $144 post-earnings, you make the full $200 credit. IV just destroyed the buyer’s premium, which is now your profit.
Same logic for iron condors across the whole chain. The trader who thought they were buying a lottery ticket by going long a $19 straddle just lost half their bet overnight. You were on the other side.
Common questions
Why does IV crash after earnings?
Implied volatility prices in uncertainty. Once earnings are out, the uncertainty resolves — no matter the direction. Market makers re-price options for the new, calmer baseline, and the extra premium you paid for the unknown disappears overnight.
Can I predict how much IV will crush?
Roughly. Take the at-the-money straddle price divided by the stock price — that’s the implied move. Historical crushes on major tickers typically land 30–50% of pre-event IV. If IV was 85%, expect 40–55% immediately after.
Do non-earnings events cause IV crush?
Yes. FDA decisions, court rulings, M&A announcements, FOMC days, and binary political events all show the same pattern. Any scheduled event with a knowable resolution date has an IV balloon that deflates when the news breaks.
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