Trading Options Around Earnings: IV Crush and the Expected Move

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By Options AI Screener · Last updated 2026-10-12 · 8 min read

Key takeaways

  • Premium rises before a report because the market is pricing a known uncertainty, not because anyone has mispriced the option.
  • The expected move is readable directly off the at-the-money straddle, and it is the number the premium is compensating you for.
  • Implied volatility collapses within minutes of the release, which helps every short-premium position and hurts every long one.
  • A long option can be directionally right and still lose, if the move is smaller than the move that was priced in.
  • An earnings date inside your expiry turns a trend trade into an event bet, whether or not you intended it.

Earnings season produces the richest option premium of the year, and the most expensive lessons. The premium is rich for a reason that is visible in advance, and most of the trouble comes from reading it as an opportunity rather than as a price.

Why the premium swells

An option's price contains the market's estimate of how much the stock will move. Before a scheduled report, the range of plausible outcomes is wide — the numbers could beat, miss, or come with guidance that matters more than either — so implied volatility rises and every option on the name gets more expensive.

Nothing in that is a mispricing. The premium is high because the uncertainty is high, and it is high for everyone looking at the same screen. When a put that normally pays $0.80 is paying $2.10, the difference is the report.

This is the single most common way an options screener misleads. Sorting a list of puts by yield reliably floats names with earnings inside the window to the top, because an upcoming report is the fastest way to raise premium. The rows look like the best trades available; they are the trades with the most event risk. How probability of profit is calculated and how far to trust it makes the same point about the other headline number.

Reading the expected move

You do not have to guess how large a move is priced in. The option market states it.

Take the at-the-money call and the at-the-money put for the first expiry after the report, and add them together. That is the at-the-money straddle, and its cost is approximately the move the market expects, in either direction.

Illustrative numbers, chosen to be round. A stock trades at $100 the day before earnings:

At-the-money call$3.60
At-the-money put$3.40
Straddle$7.00
Expected move±7%

That single figure reframes every trade on the name. It tells you what you are being paid for if you sell, and what you have to beat if you buy.

What IV crush does

The moment the numbers are public the uncertainty is resolved, and implied volatility falls hard — usually within minutes of the open, not gradually over days.

The effect is one-directional and it is the whole reason earnings trades behave unlike other trades:

Which produces the outcome that catches people out most often. Using the example above: you buy the $100 call for $3.60 expecting good numbers. The company beats, the stock opens at $104. You were right about the direction. Your call is now worth perhaps $4.30 of intrinsic value with almost no extrinsic left, against the $3.60 you paid — a small gain on a move you called correctly. Had the stock opened at $102, you would have been right and down money.

A long option into earnings needs the move to be larger than the move that was priced in. Being right about direction is not sufficient, and that is not a quirk of this example — it is what paying for the expected move means.

The other side, and why its record flatters it

Selling premium into a report has the mirror profile: it wins whenever the actual move falls short of the expected move, which is more often than not.

The problem is not the win rate. It is the distribution. A sold strangle or bull put spread through earnings collects a modest credit most of the time and occasionally meets a 20% gap that blows straight through the short strike and, on a spread, through the long one too. Four quiet quarters and one gap can be a losing year.

This is where the break-even arithmetic earns its keep. A defined-risk credit trade needs max loss ÷ (max loss + max profit) as its win rate just to break even, and on earnings-inflated premium that figure often lands in the eighties. A sequence of successful quarters tells you very little about whether the trade clears it, because the losses that decide it are rare by construction.

The decision that actually matters

For most people the useful conclusion is not which side to take. It is whether to be in the name at all during that window.

An earnings date inside your expiry converts whatever you intended — a premium-collection trade, a trend entry, a covered call on a holding — into an event bet. The position's outcome is decided by one announcement rather than by the reasoning that put you in it.

So the first question on any options trade is simply: when does this company report, and is that date before or after my expiry? Choosing the expiry that ends before the report costs a little premium and removes the single largest source of variance in the position. It is the cheapest risk control in options, and it is available on every trade.

Two cases where the opposite is reasonable, stated plainly because they exist:

Neither of those is the same as noticing a rich premium and taking it.

A short checklist

  1. Find the report date. Confirm it, rather than assuming last quarter's pattern holds. Dates move.
  2. Read the expected move off the straddle before pricing any strike.
  3. Check the strike against that move. A short put 5% out of the money against a 7% expected move is inside the range the market is pricing.
  4. Size for a gap, not for a drift. Stops do not help across an overnight gap, because the price you are stopped at is the price after the move.
  5. Prefer the expiry that clears the date unless the event is the trade.

Where to look next

The Earnings Calendar shows confirmed report dates, which is the input every step above depends on. The Cash-Secured Put screener shows implied volatility beside each strike's cushion, which is where an inflated premium becomes visible as a number rather than as an opportunity.

None of this is advice about a specific position. The habit worth keeping is the smallest one on the list: look up the report date before you look at the premium, because the premium is partly an answer to it.

Frequently asked questions

What is IV crush?

The sharp fall in implied volatility immediately after an earnings release. Before the report the option price carries the uncertainty of an unknown outcome. Once the numbers are public that uncertainty is resolved, so the volatility input collapses and every option on the name reprices lower, often within the first minutes of trading.

How do I work out the expected move?

Take the at-the-money call and put for the first expiry after the report and add their prices. That total, divided by the share price, is roughly the percentage move the market is pricing, in either direction. A 100 dollar stock whose straddle costs 7 dollars has an expected move of about 7 percent.

Is it better to buy or sell options into earnings?

Neither is structurally better, because both are priced from the same expected move. Buying wins when the actual move exceeds what was priced; selling wins when it falls short. The uncomfortable part of selling is that the losses are concentrated in the few reports that gap hard, so a long run of wins says less about the edge than it appears to.

Can I avoid earnings risk entirely?

Yes, by choosing an expiry that ends before the report date. That is the simplest risk control available in options and it costs nothing but a little premium, since the cheaper expiry is cheaper precisely because it excludes the event.

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