You bought calls the afternoon before a big earnings report. The next morning the stock gapped up 4%, exactly the direction you wanted, and your calls opened below what you paid. Your read on the company was fine. The trade still lost money.
That's IV crush: the sharp drop in implied volatility that hits an option's price the second a scheduled event is behind it. The uncertainty you paid a premium for no longer exists, so the market stops charging for it. Understanding where that premium sits in the contract, and how fast it disappears, is the difference between an earnings trade that needs a reasonable move to work and one that needs a miracle.
What IV crush actually is
An option's price splits into two parts. Intrinsic value is the amount it's in the money by, and it's pure arithmetic. Everything else is extrinsic value: time until expiration, plus the market's estimate of how much the underlying is likely to move. That second piece is implied volatility, and unlike intrinsic value it can evaporate without the stock doing anything at all.
Uncertainty being a priced input is one of the quirks that separates options from simply buying shares. Before NVDA reports, nobody knows whether the stock opens up 9% or down 11%, so option sellers demand compensation for taking that risk. After the numbers and the guidance are out, the range of plausible outcomes narrows dramatically. Implied volatility falls back toward its normal level, and every contract that was carrying that inflated premium reprices lower, often within the first minute of trading.
Two traders can hold the same strike and have completely different days. The one who bought a week before earnings paid up for the event. The one who bought the morning after paid something close to a normal price for a stock with a fresh catalyst. Same contract, very different cost basis for the same move.
Why implied volatility rises into an earnings report
Earnings are a binary, scheduled event. The date is known, the outcome isn't, and the move tends to land in one gap rather than being spread over a few sessions. Market makers price that into the contracts that cover the event, so implied volatility starts climbing days or weeks before the report, then jumps hardest in the final session or two.
It isn't uniform across the chain. The expiration directly after the report absorbs almost all of the event premium, while monthlies two or three cycles out barely move, because the earnings risk is a small share of the total time they cover. That shape is why the front week can print an IV of 110% on a name like AVGO while the contracts three months out sit near 40%. Extrinsic value is what you're paying for the possibility of a move, and if the mechanics of how options work are still settling in, this is the single most expensive place to learn them.
The expected move tells you what you're paying for
There's a quick way to see what the options market has priced in. Take the at-the-money call and put for the expiration just after the report, add them together, and divide by the stock price. That's roughly the expected move.
Say COIN is trading at $300 and the weekly straddle costs $33. The market is pricing a move of about 11% in either direction, or roughly $33, by Friday. Buy a call into that print and the stock has to clear roughly $333 before expiration just for you to break even on the directional bet. A 6% rally, which would feel like a win on any other day, leaves you underwater because you paid for 11%.
That number is the honest benchmark for any earnings trade. The question isn't whether the stock goes up. It's whether it goes further than the premium you handed over.
Vega is the Greek doing the damage
Vega measures how much an option's price changes for each one-point change in implied volatility. An at-the-money weekly might carry a vega of 0.12, meaning the contract gains or loses about $12 for every point IV moves.
Now run the earnings math. IV goes into the print at 95 and settles at 45 the next morning. That's a 50-point drop against a vega of 0.12: roughly $600 of premium gone per contract before the stock's move is even counted. If the gap only delivers $400 of delta gains, the position opens red on a correct call. Vega sits alongside delta and theta in the options Greeks, and around earnings it routinely outweighs both.
What changes | Effect on a long weekly call |
|---|---|
Stock gaps up 4% | Gain from delta |
IV drops 50 points | Large loss from vega |
One day passes | Small loss from theta |
Net result | Often a loss, even on a correct direction call |
Short-dated contracts take the worst of it
The closer expiration sits to the report, the more of the contract's price is pure event premium and the less of it is anything else. A contract expiring the day after a print is almost entirely a bet on that one gap, which is why it carries the highest IV in the chain and suffers the hardest crush.
That compression is the same force behind 0DTE options, where there's no time value left to cushion anything and the price is nearly all gamma and event risk. If you're buying the nearest expiration into earnings, treat it as a one-shot wager on the gap exceeding the expected move, not as a position you can manage over days.
Earnings aren't the only event that crushes
Any scheduled, binary catalyst does the same thing. Biotech names run huge implied volatility into FDA decisions and trial readouts. Crypto-linked stocks like MSTR inflate ahead of major regulatory rulings. Index products bid up ahead of a Fed decision or a CPI release and deflate the moment the number hits the tape, which is why QQQ options can feel strangely dead by 9:45 on a day that looked explosive at 8:29.
Earnings are simply the cleanest and most frequent version. If you work through the rest of our volatility material, the pattern repeats: volatility gets bid up before known unknowns and sold off once they're resolved, and the traders who get hurt are the ones who bought the expectation instead of the outcome.
Five ways to avoid getting burned
Trade after the print, not before. The cheapest fix is also the most boring. Let the report land, let IV reset, then trade the direction with contracts that no longer carry event premium. Post-earnings drift is a real phenomenon and you can play it at a normal price.
Buy more time. A contract 45 to 60 days out has a higher vega in dollar terms but a far smaller percentage of its price tied to one event. The crush still stings, but it won't wipe out the position the way a weekly can.
Go deeper in the money. A 70-delta call is mostly intrinsic value, and intrinsic value can't be crushed. You pay more per contract and you give up leverage, but far less of your money is sitting in the part of the price that's about to disappear.
Spread the vega off. Buying one option and selling another against it means you're short some of the inflated premium too, which blunts the hit. The choice between a debit and a credit structure comes down to whether you want to pay for the move or get paid for the crush.
Size it like a coin flip. Earnings gaps aren't predictable in direction. If the position would be painful at a total loss, it's too big, because a total loss is a normal outcome on a short-dated earnings option.
Trading the crush on purpose
The flip side is that someone is collecting all that premium. Selling a strangle or a straddle the day before a report and buying it back after the open is a direct bet that the realized move will come in smaller than the expected move. It works far more often than it feels like it should, and when it fails it fails violently, because an 18% gap against a short strangle is an ugly morning.
Defined-risk versions give you the same vega exposure with a known worst case. An iron condor placed outside the expected move collects less, but you know the maximum loss before you enter, which is what makes the trade repeatable rather than a single-event gamble.
Selling to open is a Level 4 permission, so at Vanquish those structures belong on the Advanced Options plan rather than the long-only plans.
FAQs
How long does IV crush last?
The bulk of it happens in seconds. Implied volatility on the front expiration usually resets at or just after the opening print, not gradually through the day. Longer-dated contracts bleed their smaller event premium off over a session or two.
Does IV crush affect puts as well as calls?
Yes. Implied volatility is a property of the contract's pricing, not its direction, so puts and calls on the same strike deflate together. A put bought into earnings can lose on vega even when the stock falls, if it doesn't fall far enough.
Is IV crush the same as theta decay?
No. Theta is the steady loss of time value as expiration approaches, and it's predictable day to day. IV crush is a repricing of volatility itself, and it can take out more value in one minute than theta would over the entire week.
Can LEAPS avoid IV crush?
Mostly. A contract expiring a year out carries one earnings report among four, so a single print barely registers in its implied volatility. That's part of the appeal of LEAPS for longer-horizon directional views, though you're paying a lot of time value upfront.
How do I know if implied volatility is already elevated?
Compare current IV to the stock's own history rather than to another ticker. IV rank and IV percentile both do this, and the Options Industry Council's walkthrough of implied versus historical volatility covers how the two readings relate. If front-week IV is double the back-month, you're looking at event premium.
Once you've watched a correct directional call lose money to IV crush, the expected-move calculation stops feeling like homework and starts feeling like the first thing you check. Price the event, decide whether you want to own that premium or sell it, and pick an expiration that matches the bet you're actually making.
If you want to put that process to work on a funded options account, the Vanquish plans cover both long-only and Level 4 permissions.
