Double Calendar Spread

A double calendar IS two single calendars, but they're managed together as a coordinated position with a range-bound thesis. Managing them together allows strategic decisions about the whole position (like rolling both or closing the profitable one) rather than treating them as unrelated trades.

Double calendars are better when IV is low (you benefit from IV rise). Iron condors are better when IV is high (you benefit from IV decline). Double calendars also have a different time decay profile - theta increases near each strike, while iron condors have more even decay across the range.

Either works, but many traders use a mixed approach: put calendar at the lower strike and call calendar at the upper strike. This keeps both short options OTM, reducing early assignment risk and providing cleaner management.

Typically 10-15% of the stock price (strike to strike). Wider strikes = larger profit zone but higher cost and lower percentage returns. Narrower strikes = smaller zone but cheaper entry and higher percentage returns if successful. Align strikes with technical support/resistance when possible.

If the stock breaks more than 5% beyond either strike, close the position. Calendars lose value rapidly when stock moves far from strikes. Take the loss rather than hoping for reversal - the theta benefit is gone when stock is outside the range.

You have options: (1) Close the at-strike calendar for near-max profit and keep the other, (2) Close both and take total profit, (3) Close the profitable one and roll the other to a new strike closer to current price. The choice depends on your continued outlook.

If the stock is centered between strikes at front expiration, roll both together. If the stock is at one strike, you might close that calendar (take profit) and only roll the other. Rolling individually gives more flexibility but requires more decisions.

Valley profit (stock centered) is typically 30-50% of peak profit (stock at strike). For example, if max profit at a strike is $150, profit at center might be $50-$75. The valley is still profitable - just not the maximum. The benefit is that you profit across a range, not just at one point.

If the stock has drifted outside your range, conversion is difficult. You could: (1) Roll both strikes in the direction of the move (expensive and risky), (2) Close the position and accept the loss, (3) Add a third calendar at the new price level (creates a triple). Generally, cutting losses is wiser than complex adjustments.

For call double calendars, if either short call is ITM near ex-dividend, early assignment risk increases. Use put calendars to avoid this, or be aware of ex-dividend dates. Put double calendars don't have this issue but can have different assignment risks if deep ITM.

Analyze IV at both strikes across multiple expirations. Look for (1) overall contango (back > front), (2) reasonable pricing at both strikes (check for skew distortions), (3) no event-driven kinks between your expirations. Ideal entry: term structure flat to slight contango, IV Rank < 30%, no upcoming events.

If you have directional bias within the range, you can use 2:1 or 3:2 ratios. Example: expect stock to favor lower end → 2 lower calendars, 1 upper calendar. This creates an asymmetric payoff profile. Keep total debit within risk limits. Track combined delta to understand directional exposure.

Double calendars add long vega. Balance with short vega strategies (iron condors, credit spreads) if needed. Track aggregate Greeks across portfolio. Typical allocation: 5-10% of options portfolio in double calendars. Use them for specific range-bound opportunities, not as a constant position.

Triple calendars suit: (1) wider expected range, (2) uncertain which area stock will favor, (3) wanting three profit peaks instead of two. Trade-off: 50% more capital, more complex management. Use triple when the stock's range is well-established but the focal point within that range is unclear.

Challenges: need multi-expiration options data with accurate Greeks. Key metrics: win rate, avg return, max drawdown, theta efficiency. Segment by: IV regime at entry, strike width, underlying characteristics. Compare to iron condors and single calendars. Backtests often overstate returns due to liquidity assumptions.