Call Spread (Bull)
Buy a lower strike call and sell a higher strike call for a net debit bullish play.
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What Is a Bull Call Spread?
A bull call spread (also called a long call vertical) is a two-leg options strategy where you buy a call at a lower strike price and simultaneously sell a call at a higher strike price, both with the same expiration date. The sold call reduces the net premium you pay for the trade, making it significantly cheaper than buying a naked long call. In exchange, your maximum profit is capped at the higher strike — if the stock rallies above that level, you do not capture the additional gain. This is a defined-risk, defined-reward trade: you know exactly how much you can make and how much you can lose before entering the position. The bull call spread is one of the most beginner-friendly options strategies because the risk is fully contained, the cost is modest, and the directional thesis is simple: you expect the stock to rise to or beyond the higher strike.
When to Use a Bull Call Spread
Use a bull call spread when you are moderately bullish — expecting the stock to rise, but not dramatically so. If you expect a very large rally, a naked long call captures more upside because the profit isn't capped. The spread works best when implied volatility is moderate-to-elevated: the sold call benefits from higher IV, reducing your net cost more than it limits your gain. Choose the strikes around your price target — the short strike should be where you expect the stock to reach, not where you hope it goes. Bull call spreads are also appropriate when you want to take a directional position but want to reduce premium cost to a level you are comfortable risking entirely.
Trade Structure
Buy 1 call at the lower strike (your directional entry) and sell 1 call at the higher strike (your profit target), both with the same expiration. The width between the strikes determines your maximum profit and maximum loss. Wider spreads cost more but offer more profit potential. A common setup is 5-point or 10-point spread widths on stock options, and narrower widths on high-priced indices.
Max Profit
(Higher strike − lower strike − net premium paid) × 100. This is achieved when the stock closes at or above the higher strike at expiration. For example, buying a $50/$55 bull call spread for $1.50 net has a maximum profit of ($55 − $50 − $1.50) × 100 = $350 per contract. You cannot earn more than this regardless of how far the stock rises above $55.
Max Loss
Net premium paid × 100. This is the entire debit you paid to enter the spread, lost in full if the stock closes at or below the lower strike at expiration. For example, a $1.50 net debit means the maximum loss is $150 per contract. The loss is fully defined before entry, which makes position sizing straightforward.
Breakeven
Lower strike plus the net premium paid per share. For example, a $50/$55 spread purchased for $1.50 breaks even at $51.50. The stock must close above $51.50 at expiration to show any profit. Between the lower strike and the breakeven, you recover partial premium but still take a net loss.
Greeks Profile
Net delta is positive but moderate — you are long delta from the bought call and short delta from the sold call, with the net effect being about half the delta of a naked long call at the same strike. Theta is slightly negative early in the trade when the stock is near the lower strike, and becomes less negative as the stock rises toward the higher strike. Vega is positive but small — the spread benefits slightly from rising IV but less dramatically than a naked call. Gamma is positive near the lower strike and turns negative near the higher strike, creating a complex but manageable profile.
Bull Call Spread Trading Tips
- Choose the short (upper) strike at your realistic price target — do not sell the call so far out that you might as well have bought a naked call.
- Target a risk-reward ratio of at least 1:2 — meaning the maximum profit is at least twice the maximum loss.
- Close the spread at 50–75% of maximum profit rather than holding to expiration — you capture most of the gain while eliminating expiration risk.
- This is one of the most beginner-friendly spreads — fully defined risk makes it ideal for learning directional options trading.
- Wider spreads cost more and offer higher absolute profit but the same probability of max loss — choose width based on your conviction level.
- Avoid very narrow spreads (1-point width) on low-priced stocks — commissions and spreads make the economics unfavorable.
- If the stock rallies sharply before expiration, the spread can be worth close to its maximum value well before expiry — close it, do not wait.
- Bull call spreads are often preferred over naked long calls in high-IV environments because the sold call offsets the expensive premium on the bought call.