Vertical Spread Earnings Strategy

Summary

Earnings announcements compress risk into a single event. Implied volatility spikes before the announcement and collapses after—a phenomenon called IV crush. Vertical spreads let you trade around earnings with defined risk. This guide covers pre-earnings credit spreads, post-earnings directional debit spreads, and the critical sizing rules.

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Earnings season is when options traders come alive. Implied volatility on individual stocks can double or triple in the weeks before an announcement, then collapse overnight. Vertical spreads are the ideal tool for this environment because they define your risk precisely when uncertainty is highest.

Pre-Earnings Credit Spreads: Selling the Volatility

The thesis: Implied volatility is inflated before earnings, pricing in a larger move than often occurs. By selling a credit spread, you benefit when IV crushes after the announcement.

Setup (1-7 days before earnings):

  • Identify stocks where the options market implies a larger move than the stock's historical average earnings move
  • Sell a credit spread with the short strike placed beyond the expected move
  • Use the nearest weekly expiration that includes the earnings date

    • Example: AMZN at $190, reporting earnings in 3 days. Options imply a ±$12 move (6.3%). Historical average earnings move: $8 (4.2%).

  • Sell the $175 put (below the expected $12 move) for $3.20
  • Buy the $170 put for $2.10
  • Net credit: $1.10 ($110 per contract)
  • Max risk: $3.90 ($390 per contract)
  • AMZN needs to drop past $175 for you to lose

    • If AMZN moves within the expected range ($178-$202), the spread expires worthless or nearly so. The IV crush alone can reduce the spread's value by 50-70% overnight, even if the stock moves slightly against you.

    The Risks of Pre-Earnings Credit Spreads

    Gap risk. Earnings are released before the market opens (or after close). The stock gaps to its new price with no opportunity to exit. If AMZN misses badly and opens at $165, your $175/$170 put spread is at max loss immediately.

    IV crush isn't guaranteed to help enough. If the stock moves 10% and your short strike was only 6% away, the IV crush doesn't save you. The directional move overwhelms the volatility contraction.

    Frequency of extreme moves. Most stocks have 1-2 earnings per year where the move exceeds 2x the implied range. These tail events can wipe out months of credit spread profits.

    Post-Earnings Directional Debit Spreads

    The thesis: After earnings, the stock has moved and IV has collapsed. You can buy a cheap debit spread to participate in continuation of the post-earnings trend.

    Setup (morning after earnings):

  • Wait for the stock to establish direction after the earnings gap
  • Buy a debit spread in the direction of the gap using the next monthly expiration (30-45 DTE)
  • IV is now compressed, making debit spreads cheaper than usual

    • Example: MSFT reports strong earnings and gaps up 4% to $430.

  • Buy the $430 call (ATM) for $8.50
  • Sell the $445 call for $3.80
  • Net debit: $4.70 ($470)
  • Max profit: $10.30 ($1,030)

    • Post-earnings gaps tend to continue in the same direction 60-65% of the time (studies vary). Combined with cheap options after IV crush, this creates a favorable setup for debit spreads.

    Position Sizing for Earnings Trades

    Earnings are binary events with outsized risk. Adjust your sizing accordingly:

    Credit spreads before earnings:

  • Risk no more than 1-2% of your account per trade
  • This means if your account is $50,000, max risk per earnings credit spread is $500-$1,000
  • With a $5-wide spread risking $390 per contract, you'd trade 1-2 contracts maximum

    • Debit spreads after earnings:

  • Risk 2-3% per trade (standard sizing, since you've already seen the move)
  • The stock has repriced and IV is lower—this is a standard directional trade now

    • Never concentrate in one stock's earnings. If you sell credit spreads on AAPL, GOOGL, MSFT, and AMZN earnings all in the same week, a broad market selloff hits all four simultaneously.

    Earnings Spread Checklist

    Before entering any earnings spread:

  • Compare implied move vs historical move. If implied equals historical, there's no edge in selling volatility. The market is pricing it correctly.
  • Check straddle price. The at-the-money straddle price approximates the expected move. Your short strike should be beyond this.
  • Review the earnings calendar. Make sure you know if earnings are before market open or after close.
  • Size conservatively. Earnings trades are high-variance by nature.
  • Have an exit plan for both outcomes. Know what you'll do if the stock gaps in your favor and if it gaps against you.

    • OptionsPilot displays IV rank and historical move data alongside current option pricing, helping you identify when the options market is overpricing or underpricing an earnings event.