How Call Options Work
A call option gives the holder the right to buy 100 shares of the underlying stock at the strike price before the expiration date. Call buyers pay a premium for this right and profit when the stock rises above the breakeven price (strike + premium for buyers). Call sellers collect the premium and profit when the stock stays below the strike price, but face potentially unlimited loss if the stock rises sharply above the strike.
Call options are the most traded options contracts in the US market. They serve multiple purposes: speculation on upside moves, hedging short stock positions, generating income through covered calls, and creating defined-risk bullish strategies through call spreads. Understanding how to calculate call option profits and losses is essential for all options traders.
Long Call (buying): Pay premium, unlimited upside, max loss = premium. Short Call (selling): Receive premium, max profit = premium, risk is unlimited (if naked) or capped (if covered by stock ownership). Your risk profile depends entirely on whether you are buying or selling.
Call Option Formulas
- 1Cost = $3.50 x 100 = $350
- 2Breakeven = $105 + $3.50 = $108.50
- 3At $112: Value = $112 - $105 = $7.00
- 4Profit = ($7.00 - $3.50) x 100 = $350
- 5Return = $350 / $350 = 100%
In-the-Money vs. Out-of-the-Money Calls
| Strike | Moneyness | Intrinsic Value | Typical Premium | Delta |
|---|---|---|---|---|
| $90 | Deep ITM | $10.00 | $11.50 | 0.90 |
| $95 | ITM | $5.00 | $7.00 | 0.75 |
| $100 | ATM | $0.00 | $4.50 | 0.50 |
| $105 | OTM | $0.00 | $2.50 | 0.30 |
| $110 | Deep OTM | $0.00 | $1.00 | 0.15 |
Selecting the Optimal Call Option
The best call option depends on your outlook, risk tolerance, and capital. In-the-money calls cost more but have higher probability of profit and behave more like stock. At-the-money calls offer the best leverage for moderate moves. Out-of-the-money calls are cheapest but require larger stock movements. Consider delta as a rough probability guide: a 0.30 delta call has approximately a 30% chance of expiring in-the-money.
- For high-conviction trades: Buy ATM or slightly ITM calls (delta 0.50-0.70) for the best balance of cost and probability.
- For income generation: Sell OTM covered calls (delta 0.20-0.30) to collect premium while maintaining upside potential on your stock.
- For speculation with limited capital: Buy OTM calls (delta 0.15-0.30) but size positions small since most will expire worthless.
- For stock replacement: Buy deep ITM LEAPS calls (delta 0.80+) with 6-12 months to expiry to replicate stock ownership at lower capital outlay.
- For hedging: Buy OTM puts instead of selling calls if you want to protect downside while keeping full upside potential.
Tax Treatment of Call Options
In the US, call option gains and losses are treated as capital gains. If you sell a call option for a profit within one year, it is a short-term capital gain taxed at your ordinary income rate. If held longer than one year, it qualifies for long-term capital gains rates. If a long call expires worthless, the premium is a capital loss. For call sellers, the premium received is not taxed until the option is closed, assigned, or expires. Consult a tax professional for your specific situation.