Double Diagonal — Options Strategy

A double diagonal spread is an advanced income strategy that combines two diagonal spreads—one on the call side and one on the put side—creating a wider profit zone than a single calendar or diagonal. You buy long-dated OTM options (one call, one put) and sell shorter-dated OTM options against them, collecting time decay on both sides while maintaining a defined-risk structure.

The double diagonal resembles an iron condor in that it profits from the underlying staying within a range, but it uses different expirations for the long and short options. The long-dated wings protect against catastrophic moves, while the short-dated options generate weekly or monthly income. As the front-month options expire, new short-dated options are sold, and the cycle repeats with the long wings still in place.

The profit zone on a double diagonal is wider than a standard iron condor because the short options are typically further OTM, and the long options are positioned to defend against extreme moves. The trade benefits from time decay differential between the expirations and from volatility mean-reversion—if the underlying stays range-bound, both short options decay faster than the long wings.

Management of double diagonals requires attention to the rolling mechanics. When the front-month shorts approach expiration, they are closed or allowed to expire and new short-dated options are sold at the same or nearby strikes. The long-dated wings serve as a continuous protection structure, potentially for multiple monthly cycles. This makes the double diagonal capital-efficient for traders who want to generate consistent income with a single structural position.

The key risk in a double diagonal is a large, sustained directional move that causes the underlying to move beyond the long-dated wings. Although losses are defined (the net debit paid for the long options minus credits collected), a stock that trends strongly in one direction can make the position difficult to roll profitably.