Strategy lesson · Spreads · bullish
Call Diagonal Spread Explained
A call diagonal mixes calendar timing with different strikes — often long lower-strike longer call and short higher-strike nearer call (bullish lean).
How a Call Diagonal Spread is built
Different strikes and expirations on calls (template: long lower K longer DTE, short higher K shorter DTE).
This is a multi-expiry strategy — front-month and back-month legs interact. Use the multi-expiry heatmap, not expiration-only thinking alone.
- Leg 1: buy call · strike template 100 · premium ~5.5 · 1 contract(s) · 60 DTE
- Leg 2: sell call · strike template 110 · premium ~1.8 · 1 contract(s) · 30 DTE
Risk & reward snapshot
| Market bias | bullish |
|---|---|
| Max profit | Path and vol dependent; often capped-ish versus pure long call. |
| Max loss | Often limited near net debit but verify after front-leg expiry. |
| Breakeven | Use multi-expiry analysis. |
Figures are conceptual for the classic structure. Your actual premiums, strikes, and fees change the numbers — confirm on the calculator.
When traders use it
- Mildly bullish; want to finance a longer call by selling a nearer OTM call.
Key risks
- Front short call can be tested; rolling decisions get complex.
Practical tips
- After front expiry, re-evaluate leftover long call like a new position.
Practice on the calculator
- Open the Call Diagonal Spread calculator.
- Load a symbol and option chain; fill realistic mid premiums.
- Review max profit, max loss, breakevens, and the date × price heatmap.
- Change strikes and DTE to see how risk shape shifts.
FAQ
What is a Call Diagonal Spread?
A call diagonal mixes calendar timing with different strikes — often long lower-strike longer call and short higher-strike nearer call (bullish lean).
What is the max loss on a Call Diagonal Spread?
Often limited near net debit but verify after front-leg expiry.
When should I use a Call Diagonal Spread?
Mildly bullish; want to finance a longer call by selling a nearer OTM call.