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Call Ratio Spread Calculator

Call ratio spread profit or loss equals long call value minus two short call obligations minus net debit, times 100 shares times contracts.

Expiration scenarios

Solution

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Educational estimate only, not financial advice. Results exclude commissions, taxes, slippage, dividends, assignment risk, margin, and broker-specific rules. Verify before trading options.

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Call Ratio Spread Formula

This models a 1 by 2 ratio spread: one long option and two short options.

Worked Examples

Load these examples to compare common call ratio spread payoff outcomes.

RATIO PAYOFF

Where does a 1x2 ratio spread earn the most?

The stock finishes near the short strike.

  • The long option has intrinsic value.
  • The short options have little or no excess intrinsic value.
  • Profit peaks near the short strike.

Result: the strategy is closest to maximum profit near the short strike.

Tail risk grows beyond the far break-even.

How It Works

A call ratio spread buys one lower-strike call and sells two higher-strike calls. It can lower or eliminate the entry debit, but adds upside risk.

Example Problem

Buy one $100 call and sell two $110 calls.

  1. Calculate net debit or credit.
  2. Find maximum profit at the short strike.
  3. Calculate both break-even points.
  4. Review the extra short option tail risk.

Ratio spreads are not simple defined-risk vertical spreads.

Key Concepts

The extra short option changes the tail payoff after the short strike.

Applications

  • Comparing lower-cost directional trades.
  • Checking tail break-even.
  • Sizing ratio spread risk.

Common Mistakes

  • Forgetting the second short option.
  • Calling the trade defined-risk when it is not.
  • Ignoring assignment and margin requirements.

Frequently Asked Questions

What does the Call Ratio Spread Calculator calculate?

It calculates expiration profit or loss, break-even levels, maximum profit or loss where they are defined, and payoff chart data from manually entered prices and premiums.

Does this calculator need live option quotes?

No. Enter the stock price, strikes, premiums, and contracts yourself. The calculator models expiration payoff from those inputs.

Does this model early assignment or changing implied volatility?

No. It is an expiration payoff calculator. It does not model commissions, fees, early assignment, exercise decisions, taxes, or mark-to-market pricing before expiration.

Why can payoff before expiration differ from this result?

Before expiration, option prices still include time value and implied volatility. This calculator focuses on intrinsic value at expiration.

Reference:

Options Industry Council strategy education and standard expiration payoff definitions.

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