Earnings are the most-traded events in options markets and also the most consistently misunderstood. The structural reason: implied volatility inflates ahead of the announcement and collapses after it, regardless of direction. A trader who only thinks about direction (will the stock go up or down?) misses the dominant variable.
The implied move
Before any earnings event, the front-week ATM straddle is priced to reflect the market's expected absolute move. Formula:
If NVDA is at $200 and the front-week straddle is $14, the implied move is ±7%. The market is collectively saying it expects a 7% move (in either direction) by Friday. OptionsDeck's earnings calendar computes this live for every watched name.
Vol crush — the silent killer
IV on the front-week is typically 80-150 (annualized) into earnings. The morning after earnings, IV drops to 30-50 — within hours, not days. Every option you hold gets repriced lower because vega is collapsing.
A 4% beat in line with the implied move that takes the stock up 4% will often leave a naked long call FLAT or DOWN because the vega loss exactly offsets the delta gain. This is why beginners hate earnings — they're right on direction and still lose money. Our IV crush guide breaks down exactly why the realized move has to beat the implied move to overcome the collapse.
Three strategies that work
1. Sell premium when implied is high
If you believe the move will be smaller than the implied (say, 4% expected vs implied 7%), sell premium. Iron condors with shorts at the implied band, longs 2-3 points out. You profit if the actual move is contained AND IV crushes (which it will). The combination of theta + vol crush makes this one of the highest-edge plays available.
2. Defined-risk directional verticals
If you have directional conviction AND want exposure but can't stomach vol crush, use a vertical debit spread. The short leg's vega offsets the long leg's vega — vol crush impact is dramatically reduced. You give up the home-run scenario for survivability.
3. Calendar spreads (sell front, buy back)
Sell the front-week (high IV) and buy the next month (lower IV). You explicitly profit from the front-week vol crush while maintaining longer-term exposure. Works best when you don't expect a massive move.
When to buy premium into earnings
Only when you have a structural reason to expect a move materially larger than implied — typically a known catalyst that the broader market isn't pricing (guidance change, M&A rumor, sector rotation forcing a re-rate). This is rare. If you can't articulate why your view differs from the implied, you don't have one.
Using OptionsDeck for earnings
The /earnings page ranks every watched name by implied-move %, so you can see at a glance which names have the largest priced-in expectations. The AI Strategist factors IV regime into every idea — when IV rank is elevated (almost always pre-earnings), it favors premium-selling structures.
Frequently asked questions
Why do my earnings calls lose even when I'm right on direction?
Vol crush. Pre-earnings IV is inflated; post-earnings it collapses to normal levels within hours. A 4% beat that you predicted might still leave you flat or down on a naked long call because vega worked against you.
What's the implied move?
The market's expected 1-standard-deviation move from earnings, derived from front-week ATM straddle pricing. If SPY is $730 and the straddle costs $11, the implied move is ±1.5%.
Best earnings structure?
Depends on your view. Long premium when you expect a move BIGGER than implied (rare). Short premium (iron condors, strangles) when you expect a move SMALLER than implied. Defined-risk verticals when you have directional conviction.
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