What is a Call Ratio Spread?
Buy 1 Lower-Strike Call
Provides bullish exposure.
Sell 2 Higher-Strike Calls
Reduces the cost, but leaves one extra short call uncovered.
Mental model: “I expect a moderate rise toward a target, not an explosive breakout.”
Critical risk: one extra short call remains uncovered, so upside loss can be theoretically unlimited.
Core structure
| Leg | Action | Strike | Contracts |
|---|---|---|---|
| 1 | Buy to Open Call | Lower strike | 1 |
| 2 | Sell to Open Call | Higher strike | 2 |
Worked example
Stock price: $100. You expect it to rise toward $110.
| Leg | Strike | Premium |
|---|---|---|
| Buy 1 Call | $100 | Pay $6.00 = -$600 |
| Sell 2 Calls | $110 | Receive $3.00 each = +$600 |
Net Entry Cost = $0
Maximum profit
Maximum profit occurs if the stock finishes at the short-call strike, $110.
Max Profit = ($110 - $100) × 100 = $1,000
This assumes the trade was entered for zero net premium.
Upper break-even
Upper Break-even = Higher Strike + Spread Width
Upper Break-even = $110 + ($110 - $100) = $120
Above $120, the trade begins losing money. Losses continue growing as the stock rises.
Expiration outcomes
| Stock Price | Approx. Result |
|---|---|
| $90 | $0 |
| $100 | $0 |
| $105 | +$500 |
| $110 | +$1,000 max profit |
| $115 | +$500 |
| $120 | Break-even |
| $130 | -$1,000 |
When to use it
- You expect a moderate rise toward a specific price.
- You do not expect a large breakout.
- You want a low-cost bullish structure.
- You fully understand uncovered short-call risk.
Call Ratio Spread vs. Bull Call Spread
| Feature | Call Ratio Spread | Bull Call Spread |
|---|---|---|
| Short calls | 2 | 1 |
| Entry cost | Low / zero / credit possible | Usually debit |
| Max profit | Near short strike | At or above short strike |
| Max loss | Undefined upside risk | Defined |
| Beginner suitability | Low | Much better |
Call Ratio Spread vs. Call Backspread
| Feature | Call Ratio Spread | Call Backspread |
|---|---|---|
| Typical ratio | Buy 1, sell 2 | Sell 1, buy 2 |
| Best view | Moderate rise | Very large rise |
| Big upside move | Hurts badly | Helps |
Assignment and margin risk
Either short call can be assigned before expiration. Because only one long call exists, the second short call is uncovered.
A strong rally can create a short-stock obligation and sharply higher buying-power requirements.
Safer alternatives
Bull Call Spread: simpler and defined risk.
Broken-Wing Butterfly: can preserve a target-price thesis while defining risk.
Pros and cons
Pros
- Low-cost entry possible.
- Strong payoff near target.
- Useful for moderate bullish view.
Cons
- Unlimited upside risk.
- Assignment risk.
- Margin can expand quickly.
- Large rallies can turn profit into a large loss.
How to close it
Close as one multi-leg order when possible:
Sell to Close the long call + Buy to Close both short calls.
Common mistakes
- Thinking “zero cost” means “zero risk.”
- Ignoring the extra uncovered short call.
- Holding through a breakout.
- Using the strategy around earnings without accounting for gap risk.
- Not calculating the upper break-even before entry.
Beginner checklist
| Check | Question |
|---|---|
| ☐ Target | Do I expect a moderate rise rather than a breakout? |
| ☐ Ratio | Do I understand that 1 long call does not cover 2 short calls? |
| ☐ Break-even | Where does the trade begin losing on a large rally? |
| ☐ Margin | Can I handle higher buying-power requirements? |
| ☐ Assignment | What happens if both short calls are assigned? |
| ☐ Alternative | Would a Bull Call Spread be safer? |
Key takeaway
Call Ratio Spread = Buy 1 Lower-Strike Call + Sell 2 Higher-Strike Calls
Use it only when you expect a moderate rise and fully understand the uncovered upside risk.
For beginners: a Bull Call Spread is generally much easier to manage because risk is defined.