Neutral

Diagonal Spread

Q: How does it differ from a calendar?

The two legs use different strikes as well as different expirations. That adds a directional lean to the calendar’s time engine: the diagonal profits if price moves toward the short strike, whereas the calendar prefers price not to move at all.

Q: Is it the same as a PMCC?

The Poor Man’s Covered Call is a type of bullish diagonal: a deep in-the-money, long-dated long call with a short-dated out-of-the-money short call. The diagonal is the family; the PMCC is the specific case designed to replicate a covered call with less capital.

Q: How far apart should the two expirations be?

The usual range is 30 to 60 days apart. Less separation leaves little residual value in the long leg; more separation makes the structure expensive and dilutes the differential-decay effect, which is where much of the profit comes from.

A combination of vertical spread and calendar spread: different strikes AND different expirations.

Max GainCapped — maximised with the underlying at the short strike at the near expiration

Max LossCapped (net debit paid)

Break-evenTwo points — no closed formula (they depend on the long leg’s value at the near expiration)

TypeDebit (usually)

Ideal IV environmentLow to moderate IV with expectation of expansion in the far expiration

Profit / Loss Diagram

Diagonal Spread (Bull) at the near expiration

What is this strategy?

The Diagonal Spread is a hybrid strategy combining features of vertical spreads (different strikes) with calendar spreads (different expirations). It is built by selling a near-dated option at one strike and buying a longer-dated option at a different strike — typically further out of the money for bullish calls, further in the money for bearish puts. This structure provides more directional flexibility than a pure calendar spread.

The diagonal earns from multiple sources: differential theta decay, directional movement up to a point, and the drop in implied volatility on the near-dated option. The bull diagonal buys a longer-dated call and sells a nearer-dated call closer to the money, generating a smaller net debit than a traditional call spread.

The diagonal spread suits traders expecting moderate direction with time on their side. It is more versatile than a calendar spread because it permits a specific directional lean — bullish or bearish — while retaining theta advantages. It requires more frequent adjustment than a pure calendar spread, especially as price approaches the near-dated option.

Construction

Action	Instrument	Strike	Expiration	Example (Bull)
SELL	1 Call (near-dated)	ATM or slightly OTM	30 DTE	-1 QQQ Mar 380 Call
BUY	1 Call (longer-dated)	Lower than the short strike	60 DTE	+1 QQQ Jun 370 Call

Example

Scenario: QQQ at $380, moderately bullish. You want positive theta with a slight bullish lean.

Call Sold (March, ATM) -1 QQQ Mar 380 Call @ $4.50
Call Purchased (June, lower strike) +1 QQQ Jun 370 Call @ $7.50
Initial Net Debit $300 (7.50 − 4.50 × 100)
Maximum Gain $700 (10 strike width − 3 debit)
Maximum Loss $300 (net debit paid)
Breakeven $383.00 (short strike + net debit)
Scenario March at $375 Short call expires worthless, the Jun 370 call is worth about $6.50, net gain $350

The Greeks

δDelta — Slightly Positive

A mild bullish stance: the long leg’s delta partially offsets the short leg’s, leaving net positive delta.

θTheta — Positive

The near-dated leg decays faster, though the benefit is slightly smaller than a pure calendar because of the strike difference.

νVega — Slightly Positive

The long option carries more vega than the short one, giving slight positive exposure to rises in volatility.

γGamma — Neutral

The long leg’s positive gamma is partially offset by the short leg’s negative gamma, leaving a neutral to slightly positive profile.

Position Management

01
Close the Short Leg Early At 50% profit on the short call, close it. You can then sell another near-dated option against your still-live long call.
02
Roll Up if Bullish If price rises toward your short strike, close the position and open a new diagonal at higher strikes, rolling the structure up.
03
Capitalise on Moves If price moves significantly in your direction, you can close the entire position early for larger gains than waiting would produce.
04
Monitor Volatility Low IV is beneficial at entry. If IV rises, the long call gains but so does the short one, muting the benefit. Consider closing if IV rises sharply.
05
Adjust as Needed If price moves against you beyond a defined point, consider closing the short leg and restructuring the whole position.

Frequently Asked Questions

How does it differ from a calendar?

The two legs use different strikes as well as different expirations. That adds a directional lean to the calendar’s time engine: the diagonal profits if price moves toward the short strike, whereas the calendar prefers price not to move at all.

Is it the same as a PMCC?

The Poor Man’s Covered Call is a type of bullish diagonal: a deep in-the-money, long-dated long call with a short-dated out-of-the-money short call. The diagonal is the family; the PMCC is the specific case designed to replicate a covered call with less capital.

What is the risk if the underlying spikes?

The short leg generates growing losses, but the long leg offsets much of them. The real risk is that, at the short leg’s expiration, the long one has not gained as much value as has been lost — which happens especially if implied volatility has compressed at the same time.

How far apart should the two expirations be?

The usual range is 30 to 60 days apart. Less separation leaves little residual value in the long leg; more separation makes the structure expensive and dilutes the differential-decay effect, which is where much of the profit comes from.

Profit / Loss Diagram

What is this strategy?

Construction

Example

The Greeks

Position Management

Frequently Asked Questions

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