Bull Call Spread Step by Step: A Complete Example

Summary

A bull call spread involves buying a call option at a lower strike and selling a call at a higher strike with the same expiration. This walkthrough uses real-world numbers on AAPL to show entry, management, and exit decisions with concrete profit/loss calculations at every price level.

---

The bull call spread is the most intuitive vertical spread. You believe a stock is going up, so you buy a call. Then you offset some of that cost by selling a higher-strike call. The trade-off: you cap your upside in exchange for a cheaper entry.

Setting Up the Trade

Stock: AAPL trading at $230 Expiration: 38 days out Outlook: Moderately bullish—expecting a move to $240-$245

Trade Entry:

Buy the $230 call at $7.80 (at-the-money)

Sell the $240 call at $3.20 (out-of-the-money)

Net debit: $4.60 per share ($460 per contract)

Spread width: $10

Calculating Max Profit, Max Loss, and Breakeven

These three numbers define the entire trade:

Max profit = Spread width - Net debit = $10.00 - $4.60 = $5.40 per share ($540) This occurs when AAPL is at or above $240 at expiration.

Max loss = Net debit = $4.60 per share ($460) This occurs when AAPL is at or below $230 at expiration.

Breakeven = Long strike + Net debit = $230 + $4.60 = $234.60

| AAPL at Expiration | Long $230 Call Value | Short $240 Call Value | Net Value | Profit/Loss | $225$0.00$0.00$0.00-$460 $230$0.00$0.00$0.00-$460 $234.60$4.60$0.00$4.60$0 $237$7.00$0.00$7.00+$240 $240$10.00$0.00$10.00+$540 | $250 | $20.00 | $10.00 | $10.00 | +$540 |

Notice that above $240, both options gain value at the same rate, so your profit stays fixed at $540. This is the cap you accepted when selling the $240 call.

Managing the Trade: Day by Day

Days 1-10: AAPL drifts to $232. The spread is worth about $5.30. You're up roughly $70. No action needed—the trade is working but has room to grow.

Day 15: AAPL jumps to $238 after earnings guidance. The spread is now worth $7.80. You're up $320. Decision point: take 60% of max profit now, or hold for the full $540?

The 50-75% Rule: Many traders close debit spreads when they reach 50-75% of max profit. At $320 profit on a $540 max, you've captured 59%. Closing here locks in gains and frees capital. Holding means risking that $320 profit for an additional $220.

Day 25: If you held and AAPL pulls back to $234, the spread is worth around $5.00. You're now up only $40. Time decay is accelerating and working against you since both options lose value, but the long call loses more.

When to Use the Bull Call Spread

This strategy works best when:

You expect a moderate move higher within a defined timeframe

Implied volatility is relatively low (you're buying options, so cheaper is better)

You want to risk less than buying a single call

The stock has a catalyst approaching (earnings, product launch, FDA decision)

It works poorly when:

You expect a massive move (a single call captures unlimited upside)

IV is extremely high (you're overpaying for both legs)

You have no timeframe conviction (theta works against debit spreads)

Comparing Bull Call Spread vs. Buying a Single Call

Buying just the $230 call costs $780. The bull call spread costs $460—a 41% discount. But the single call has unlimited upside while the spread caps at $540.

If AAPL goes to $260, the single call makes $2,220 versus the spread's $540. If AAPL stays at $232, the single call might be worth $500 (-$280 loss) while the spread is worth $350 (-$110 loss). The spread loses less in flat or mildly bullish scenarios but gives up windfall gains.

Exit Checklist

Before entering any bull call spread, know your exits:

Profit target: Close at 50-75% of max profit

Stop loss: Close if the spread loses 50% of its value (spread drops to $2.30)

Time stop: Close with 7-10 days remaining regardless of position—gamma risk and pin risk increase sharply near expiration

Thesis invalidated: Close immediately if your bullish thesis changes