How to Buy a Call Option
Buying a call option is the most straightforward bullish options strategy. You pay a premium for the right to purchase 100 shares of a stock at the strike price before expiration. If the stock rises above the strike price plus your premium (the breakeven), you profit. Your maximum loss is limited to the premium paid, giving you defined risk with unlimited upside potential.
Call buying is popular because it offers significant leverage. Instead of investing $10,000 to buy 100 shares of a $100 stock, you might spend $300 on a call option that controls those same 100 shares. If the stock rises 15%, the shares gain $1,500, but the call option might gain $1,200 on a $300 investment, a 400% return versus 15% from stock ownership.
Buy call options when you are bullish on a stock and want leveraged upside exposure with defined downside risk. Ideal conditions include: strong fundamental catalysts, bullish technical patterns, and moderate (not inflated) implied volatility.
Call Buying Process
Step-by-Step Call Purchase
Call Buying Profit Formula
Call Buying Example
- 1Total cost = $3 x 100 = $300
- 2Breakeven = $105 + $3 = $108
- 3Stock at $115: Value = ($115-$105) x 100 = $1,000
- 4Net profit = $1,000 - $300 = $700 (233%)
- 5Stock at $100: Loss = $300 (option expires worthless)
Choosing the Right Strike Price
| Strike | Cost | Win Rate | Leverage | Best For |
|---|---|---|---|---|
| Deep ITM | High | ~80% | Low | Stock replacement |
| ATM | Moderate | ~50% | Moderate | Balanced approach |
| Slightly OTM | Low | ~30% | High | Strong conviction |
| Far OTM | Very Low | ~10% | Extreme | Rarely recommended |
Common Call Buying Mistakes
- Buying far OTM calls because they are cheap: These expire worthless 85-95% of the time.
- Too little time to expiration: Options with 1-2 weeks left face extreme time decay.
- Buying before earnings when IV is inflated: IV crush after earnings can destroy call value even if the stock rises.
- Ignoring the breakeven price: Your breakeven is strike + premium, not just the strike price.
- No exit plan: Decide profit targets and stop losses before entering.
Every day that passes, your call option loses value due to time decay (theta). This accelerates in the final 30 days. If the stock moves sideways, you lose money even though the stock did not decline.