Glossary term
Bull Call Spread
A bull call spread is a defined-risk options strategy that buys a lower-strike call and sells a higher-strike call to profit from a moderate rise.
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What Is a Bull Call Spread?
A bull call spread is a defined-risk options strategy that buys a lower-strike call and sells a higher-strike call with the same expiration. It is used when a trader expects the underlying asset to rise, but not necessarily far beyond the higher strike.
The position is usually opened for a net debit. The long call creates upside exposure, while the short higher-strike call helps reduce the cost. In exchange for that lower cost, the trader gives up gains above the short call strike.
Key Takeaways
- A bull call spread combines a long lower-strike call with a short higher-strike call.
- It is usually entered for a net debit.
- The maximum loss is the premium paid, before commissions and fees.
- The maximum gain is the strike-width minus the net debit, before costs.
- The strategy is best suited to a moderate bullish view rather than an unlimited upside view.
How the Strategy Works
Assume a stock trades at $50. A trader buys a $50 call and sells a $55 call with the same expiration. The purchased call gives the trader the right to buy at $50. The sold call obligates the trader to sell at $55 if assigned. Together, the spread creates a payoff that improves as the stock rises, but stops improving after the higher strike.
If the stock finishes below $50 at expiration, both calls may expire worthless and the trader loses the net debit. If the stock finishes above $55, the spread reaches its maximum value of $5 before subtracting the original cost. Between $50 and $55, the value depends on the stock's final price.
Payoff and Risk
Outcome at expiration | General result |
|---|---|
Underlying below long call strike | Maximum loss: net debit paid. |
Underlying between strikes | Partial recovery, breakeven, or profit depending on final price. |
Underlying above short call strike | Maximum profit: strike width minus net debit. |
The breakeven is the lower strike plus the net debit. If the $50/$55 spread costs $2, the breakeven at expiration is $52. The spread can be attractive when buying a call outright feels too expensive or when the trader has a realistic target near the higher strike.
Why Traders Use It
A bull call spread can reduce the cost of a bullish options trade. Buying a call outright offers more upside, but the premium can be expensive, especially when implied volatility is elevated. Selling the higher-strike call offsets part of that premium and makes the trade more capital-efficient.
The strategy also forces a target. A trader who expects a stock to rise from $50 to around $55 may not need unlimited upside. The short call monetizes the area above the target and helps define the payoff. That discipline can be useful, but it can also be frustrating if the stock rallies far beyond the short strike.
Time, Volatility, and Expiration
Time decay affects both legs. The long call loses time value, while the short call also loses time value. The net effect depends on where the underlying trades relative to the strikes. Early in the trade, changes in implied volatility can also affect the spread's market value, though a vertical spread is usually less volatility-sensitive than a single long call.
Expiration management matters. If the underlying is near the short strike, assignment and exercise mechanics can become important. Many traders close spreads before expiration to avoid unwanted stock positions or operational surprises.
Bull Call Spread Versus Bull Put Spread
A bull call spread usually starts with a debit and needs the underlying to rise enough to overcome that cost. A bull put spread usually starts with a credit and can profit if the underlying stays above the short put strike. Both cap gains and losses, but they express the bullish view through different premium and risk mechanics.
Investor Takeaway
A bull call spread is a structured bullish trade with known risk, lower cost than a long call, and capped upside. It works best when the trader has a moderate price target, understands the breakeven, and accepts that gains above the short strike belong mostly to the trade structure rather than the trader.