Call Option Profit/Loss Calculator
Solution
Contract Cost (Net Debit)
$500.00
Break-Even Price
$105.00
Maximum Risk
$500.00
Maximum Reward
Unlimited
Gain / Loss at Expiration
+$1,000.00
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How Call Options Work
A call option gives the holder the right, but not the obligation, to buy 100 shares of an underlying stock at a specified strike price before or at the expiration date. The buyer pays a premium upfront for this right.
When the stock price rises above the strike price at expiration, the option is "in the money" (ITM). The buyer can exercise the option to buy shares at the lower strike price, then sell them at the higher market price. If the stock price stays at or below the strike price, the option expires worthless and the buyer loses the premium paid.
Key Terms
- Strike Price (K): The price at which the option holder can buy the stock.
- Premium: The cost per share to buy the option contract. Since each contract represents 100 shares, the total contract cost is Premium × 100 × Number of Contracts.
- Break-Even Price: The stock price at which you neither profit nor lose. For a call option, it equals Strike Price + Premium.
- Maximum Loss: Limited to the total premium paid (the contract cost). This occurs when the option expires worthless.
- Maximum Gain: Theoretically unlimited, since a stock price can rise without bound.
Example
You buy 1 call option contract with a strike price of $100 for a premium of $5 per share. Your total cost is $5 × 100 = $500. If the stock is at $115 at expiration, your gain is ($115 − $100) × 100 − $500 = $1,000. Your break-even is $105.
Frequently Asked Questions
When should I buy a call option?
Call options are typically purchased when you expect the underlying stock price to increase significantly before the expiration date. They provide leveraged exposure to upside movements while limiting your downside to the premium paid.
What happens if the stock price stays below the strike price?
The option expires worthless and you lose the entire premium paid. This is the maximum possible loss when buying a call option.
How does the number of contracts affect my position?
Each additional contract multiplies both your potential profit and your total cost (and therefore maximum risk) proportionally. For example, buying 5 contracts instead of 1 means your premium cost, potential profit, and maximum loss are all 5 times larger.
What is the break-even stock price for a call option?
For a long call option, the break-even price equals the strike price plus the premium per share. The stock must trade above this level at expiration for you to realize a net profit.