Earnings calendar spreads

The earnings calendar spread is a volatility strategy that specifically exploits the difference in implied volatility between the short-dated options expiring immediately after earnings and the longer-dated options that don't capture the event. It's one of the more sophisticated earnings approaches , neither a pure directional bet nor a pure premium-selling trade.

The setup

A calendar spread involves:

• Selling the near-term option that expires immediately after the earnings announcement (highest IV , capturing the event premium)
• Buying a longer-dated option at the same strike (lower IV , not fully capturing the event)

Net result: a debit paid, but the near-term short option carries much higher IV than the longer-dated long option. You're selling expensive near-term IV and buying cheaper longer-term IV.

Why it works around earnings

The earnings calendar exploits term structure steepness , the large gap in IV between the front-month earnings-expiry and subsequent expirations.

Example: AAPL is at $185, earnings in 3 days. The front-month call (expiring this Friday, capturing the earnings event) has IV of 75%. The next month's call (expiring in 35 days) has IV of 32%.

• Sell the $185 call expiring Friday (35 days from now)... wait, selling the near-term high-IV option
• Buy the $185 call expiring in 35 days (lower IV)
• Net debit: ~$1.50

Two potential outcomes

If the stock barely moves after earnings: The near-term short call collapses in value as IV crushes. Your long call retains much of its value (it still has 35 days and lower IV to crush). The position profits from the IV differential collapsing.

If the stock makes a very large move: The position can lose money even if IV crushes, because a large directional move in the stock creates losses on the short option that exceed the IV crush benefit. Large moves beyond the expected range are the primary risk.

Risk profile

The earnings calendar spread is:

• Long vega on the long option (benefits from any residual IV)
• Short vega on the short option (benefits from IV crush)
• Net vega exposure: Slightly positive on the longer-dated option, which retains more value post-IV crush
• Delta: Near zero at entry (both options at same strike), but grows if the stock moves

When earnings calendar spreads work best

Ideal conditions:

• Very steep term structure , large gap between near-term earnings IV and next-month IV
• You expect the stock to move within the implied move range (not blow through the strikes)
• The long option's IV is significantly lower than the short option's

Less favorable conditions:

• Small gap between near-term and next-month IV (little edge in the spread)
• High-momentum stock prone to large earnings gaps
• Very wide bid-ask spreads on either leg

Comparison to other earnings strategies

Related terms: Calendar spread, IV crush, term structure, straddle, iron condor, Vega

Try it on Stryke: Use the Earnings Calendar and Implied Earnings Move tool to identify steep term structures ahead of announcements.

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