Ratio Call Spread: Buy One Call, Sell Two

Key Takeaways

• A ratio call spread buys one call and sells two calls at a higher strike.
• Maximum profit occurs with the stock at the short strike at expiration.
• The extra short call is uncovered, so upside risk is unlimited.
• The trade can often be opened for a small debit or even a credit.

What It Is

A ratio call spread, in its common 1x2 form, buys one call at a lower strike and sells two calls at a higher strike, all in the same expiration. The result is a bull call spread plus one extra short call. That extra short call is naked, which is what creates the upside risk.

The position is market-neutral to slightly bullish. It is built for a stock that rises gently toward the short strike, not one that explodes higher.

The Intuition

Selling two calls funds the one you buy, so the spread can be cheap or even pay a credit. The premium from the second short call is the reward for accepting open-ended risk above the short strike.

The ideal outcome is the stock landing exactly at the short strike at expiration. There, the long call captures the full move up to that point while both short calls expire worthless. Push past the short strike and the naked call begins to bite. Theta works for you, since two short options decay faster than the single long one when price stays put.

How a Ratio Call Spread Works

Buy 1 call at lower strike Kl, sell 2 calls at higher strike Kh, same expiration. The position can be a debit or a credit.

Net cost = long call premium - (2 x short call premium)   (negative = credit)
Strike width = Kh - Kl
Max profit = strike width + net credit, or strike width - net debit (at price = Kh)
Lower breakeven = Kl + net debit (debit case)
Upper breakeven = Kh + max profit
Max loss = unlimited above the upper breakeven

If opened for a credit, there is no downside risk, since the worst case below the long strike is simply keeping the credit. The danger lives entirely on the upside, where the single uncovered short call has no cap.

P/L
 |        /\
 |       /  \              <- peak at short strike Kh
_|______/____\_____________ price
 |     /      \
 |    /        \  (loss grows without limit upward)
   Kl        Kh  UB

Worked Example

Stock XYZ trades at 100. You buy the 100 call for 4.00 and sell two 110 calls for 2.00 each, collecting 4.00. The net cost is 4.00 minus 4.00, which is zero.

Net cost = 4.00 - (2 x 2.00) = 0 (even money)
Strike width = 110 - 100 = 10
Max profit = 10 + 0 = 10 (1,000 dollars) at price = 110
Upper breakeven = 110 + 10 = 120

If XYZ finishes at 110, the 100 call is worth 10.00 and both 110 calls expire worthless, for a 1,000 dollar gain. If XYZ finishes at or below 100, everything expires worthless and you break even (you paid nothing). Above 120, the naked short call overwhelms the gain, and at 130 the position loses 10.00 per share net. There is no downside risk here because the trade cost nothing to open.

Common Mistakes

1. Forgetting the naked call. The extra short call has unlimited risk above the short strike. A sharp rally can turn a tidy trade into a large loss.

2. Using it for a strong bullish view. This profits from a gentle rise to the short strike. If you expect a powerful rally, a backspread or a plain long call fits better.

3. Misjudging margin. The uncovered short call requires margin and can trigger calls if the stock spikes. Plan for the buying power, not just the premium.

4. Ignoring assignment. The short calls can be assigned, especially before a dividend, leaving a short stock position you did not want.

5. Overpaying on a debit version. If the spread costs a meaningful debit, you add downside loss to the existing upside risk. Many traders prefer the credit or even-money setups.

Frequently Asked Questions

What is a ratio call spread in simple terms? A ratio call spread buys one call and sells two higher-strike calls, profiting if the stock drifts up to the short strike. The extra short call gives it unlimited risk if the stock rallies far past that strike.

How does a ratio call spread affect investment decisions? It expresses a mildly bullish view at low or no cost, often for a stock expected to grind toward a target. Because the upside risk is open-ended, sizing and an upside stop matter more than the entry cost.

What is a real-world example of a ratio call spread? Buying a 100 call and selling two 110 calls for even money gives a max profit of 1,000 dollars at 110 and an upper breakeven of 120. Above 120 the naked call drives losses.

How can investors use a ratio call spread effectively? Open it for a credit or even money so there is no downside risk, place the short strike near a realistic price target, and set an upside exit before the breakeven. Watching for assignment near dividends avoids surprises.

How is a ratio call spread different from a call backspread? A ratio call spread sells more calls than it buys, so it is short volatility with unlimited upside risk. A call backspread buys more calls than it sells, making it long volatility with unlimited upside profit instead.

Sources

1. Fidelity Learning Center. "1x2 Ratio Vertical Spread with Calls." https://www.fidelity.com/learning-center/investment-products/options/options-strategy-guide/1x2-ratio-vertical-spread-calls
2. OIC (Options Industry Council). "Short Ratio Call Spread." https://www.optionseducation.org/strategies/all-strategies/short-ratio-call-spread
3. CME Group. "Option Ratio Spreads." https://www.cmegroup.com/education/courses/option-strategies/option-ratio-spreads
4. Charles Schwab. "Intro to Put Ratio Options Spreads." https://www.schwab.com/learn/story/intro-to-put-ratio-options-spreads

Disclaimer

This article is educational content only and is not financial advice. Nothing here is a recommendation to buy, sell, or hold any security. Consult a licensed advisor before making investment decisions.