Diagonal Spread: Flexible Time & Strike Strategy 2026
A diagonal spread is a calendar spread with a twist — instead of using the same strike for both legs, you use different strikes. This gives you directional bias on top of the time decay advantage. It's a versatile strategy that can be bullish, bearish, or neutral depending on your strike selection.
What Is a Diagonal Spread?
A diagonal spread combines elements of both vertical spreads and calendar spreads. You sell a near-term option at one strike and buy a longer-term option at a different strike. The "diagonal" name comes from the option chain — you're moving both horizontally (different expirations) and vertically (different strikes).
The most common diagonal is a bullish call diagonal: buy a longer-dated, lower-strike call and sell a shorter-dated, higher-strike call. This creates a position that benefits from time decay on the short leg, directional movement toward your short strike, and any increase in implied volatility.
Diagonals offer more flexibility than pure calendars because the different strikes let you express a directional view. You can set up bullish diagonals, bearish diagonals, or even neutral ones with wide strike differences.
Example: Stock XYZ is at $100. You buy a 90-day $95 call for $9.00 and sell a 30-day $105 call for $2.50. Net debit: $6.50 ($650). If XYZ moves to $105 at front-month expiration, the short $105 call expires worthless (or near it) and your long $95 call is worth approximately $12.00. Spread value: ~$12.00 - $0 = $12.00. Profit: $12.00 - $6.50 = $5.50 ($550). You can then sell another 30-day call against the remaining long call.
When to Use It
- When you have a mild directional bias and want to profit from time decay simultaneously
- When you want to reduce the cost of a longer-dated option by selling short-term premium
- As a "poor man's covered call" or "poor man's covered put" — using a LEAPS option instead of stock
- When you want more flexibility than a straight calendar spread
- In moderate IV environments where you want some directional exposure
How to Set It Up
1. Determine your directional bias (bullish or bearish) 2. For a bullish diagonal: buy a longer-dated call at a lower strike (ideally 60-90+ DTE, 70+ delta) 3. Sell a shorter-dated call at a higher strike (20-30 DTE, 20-30 delta) 4. For a bearish diagonal: reverse with puts — buy longer-dated put at higher strike, sell shorter-dated put at lower strike 5. Ensure the long option has enough time value to sell multiple short cycles against it 6. Manage by rolling the short leg when it reaches 50-75% profit or approaches expiration
Risk & Reward
Max profit: Achieved when the stock reaches the short strike at front-month expiration. Exact amount varies by setup. | Max loss: Net debit paid if the stock moves dramatically against your directional bias. In the example: $650. | Breakeven: Varies based on IV and time remaining. Generally near your long strike + debit paid for call diagonals.
Best Brokers for This Strategy
Tastytrade excels for diagonal spreads — its rolling tools make it easy to replace expired short legs, and free-to-close pricing maximizes your income. IBKR offers the tightest spreads on multi-leg orders. thinkorswim/Schwab has powerful P&L analysis tools for modeling diagonal spread outcomes across time and price. See our best options brokers guide.
Not financial advice. Always do your own research.
Tastytrade is built for options traders — the best platform for covered calls, cash-secured puts, and spreads.
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