Options Academy
Ratio Calendar Spreads 103: Delta-Neutral Calendars
Delta-neutral ratios can be applied to calendars too. OTM calendars sell more calls; ITM calendars buy more calls.
Neutral Ratio Formula
The neutral ratio is long-call delta / short-call delta.
Example: July delta 0.25, April delta 0.15 => ratio 1.67:1.
That can be expressed as selling 5 for every 3 bought.
Long Delta
0.25
Short Delta
0.15
Neutral Ratio
1.67:1
Tradeable Ratio
Sell 5 / Buy 3
OTM Neutral Calendars (More Shorts)
When both calls are OTM, the shorter-term call often has lower delta.
Neutral ratio typically means selling more calls than you buy.
That introduces naked calls and requires collateral.
ITM Neutral Calendars (More Longs)
When calls are ITM, the short-term call can have a higher delta than the long-term call.
Neutral ratio may require buying more calls than you sell.
That removes naked call risk and can perform well on upside gaps.
ITM Example
Stock $49, use $45 calls
April Delta
0.80
July Delta
0.70
Neutral Ratio
Buy 8 / Sell 7
Risk Profile Contrast
OTM neutral calendars: higher margin, more upside risk before near-term expiry.
ITM neutral calendars: no naked calls, limited downside to the initial debit.
Choose based on account size and risk tolerance.
Key takeaways
- Neutral ratio = long delta / short delta.
- OTM neutral calendars usually sell more calls and carry naked risk.
- ITM neutral calendars often buy more calls and remove naked risk.
- Pick the version that matches margin capacity and risk tolerance.
Series
Ratio Calendar Spread Masterclass
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