Money Basics · Lesson 9 of 14
Options Have Deadlines and Can Lose Their Entire Purchase Price
An option is a contract with a deadline. Buyers can lose everything they paid, sellers can face very large losses, and being right about direction isn’t enough.
In this lesson
- Define calls, puts, strike, expiration and premium
- Calculate what a standard contract costs and its break-even at expiration
- Explain why a correct view on direction can still lose money
- Describe the extra risks that option sellers take on
An option is a contract tied to an underlying asset, such as a stock or an ETF. These five terms appear on every option quote you’ll see.
- Call option — generally gives its buyer the right to buy at a specified price.
- Put option — generally gives its buyer the right to sell at a specified price.
- Strike price — the specified price in the contract.
- Expiration — the contract’s deadline.
- Premium — the option’s purchase price, quoted per share.
What one contract costs
A standard U.S. equity option usually represents 100 shares, which is its contract multiplier, although adjusted contracts can differ. A quoted premium of $2 therefore commonly costs $200 per contract before fees.
A buyer can lose the entire premium. A directionally correct idea can still lose because the move was too small, came too late, or arrived alongside lower expected volatility.
Example Consider this example
You pay $200 for a standard call with a $50 strike. At expiration, a $51 stock price gives it $100 of intrinsic value. You’re still down $100 before fees, even though the stock is above the strike. The expiration break-even price is $52. Before expiration, other pricing factors also matter.
Sellers take on obligations
An option seller collects the premium and takes on an obligation. An uncovered call can expose its seller to unlimited loss. Other short options can also create very large losses and assignment obligations. Exercise or assignment may create a stock position that requires substantial cash or borrowing.
Time and volatility
Time decay, which theta estimates, describes the erosion of an option’s extrinsic value as expiration approaches, all else equal. Implied volatility reflects the movement priced into options, not a promise about the future. Contracts expiring today, called 0DTE options, can change value extremely quickly.
Watch out
Learn your broker’s expiration and exercise procedures before considering a trade. Brokers must give you the Options Disclosure Document before approving you to trade options. Read it; no summary replaces it.
Check your understanding
5 questions. Answer each one, then open “Show answer” to compare.
Show answer
Answer: False.
No. The price you paid, the size and timing of the move, and changes in expected volatility all matter. In the example, the stock finished above the strike and the call still lost $100.
Question 2 of 5 You buy a standard call with a $60 strike for a premium of $3.00. What stock price at expiration is your break-even, before fees?
dollarsShow answer
Answer: 63 dollars.
For a long call, break-even at expiration is strike plus premium: $60 + $3 = $63. Below $63 the trade loses money at expiration, even above the strike.
Show answer
Answer: C. $125
Premiums are quoted per share, and a standard contract covers 100 shares: $1.25 × 100 = $125.
Show answer
Answers: A. The rise was too small to cover the premium you paid · B. The rise came too late, after time value had decayed · C. Implied volatility fell after you bought
A long call needs a big enough move, soon enough, and a drop in implied volatility can shrink its price. A rise far above break-even near expiration would be a profit at that point, not a loss.
Show answer
Answer: C. Selling an uncovered call
A stock’s price has no fixed upper limit, so the seller of an uncovered call faces losses with no fixed cap. An option buyer’s loss is limited to the premium paid, plus fees.
Key takeaways
- A standard contract covers 100 shares, so a $2 quote costs about $200.
- Option buyers can lose the whole premium, even when the stock moves their way.
- A long call’s break-even at expiration is strike plus premium.
- Selling options creates obligations, and an uncovered call’s loss has no fixed limit.
Key terms
- Option
- A contract giving the buyer the right, not the obligation, to buy or sell an asset at a set price by a set date. The seller takes the obligation.
- Underlying
- The stock, ETF or index an option is based on. For a SPY call, the underlying is SPY.
- Call option
- The right to buy 100 shares at the strike price until expiration. A long call gains value when the underlying rises enough.
- Put option
- The right to sell 100 shares at the strike price until expiration. A long put gains value when the underlying falls enough.
- Strike price
- The fixed price at which an option lets you buy (call) or sell (put) the underlying. Each expiration lists many strikes.
- Expiration
- The date an option contract ends. After it, the contract no longer exists and any remaining rights are gone.
- Contract multiplier
- The number of shares one option contract covers, which is 100 for standard US stock and ETF options.
- Intrinsic value
- What an option would be worth if exercised right now: price minus strike for a call, strike minus price for a put, never below zero.
- Break-even price
- The underlying price at expiration where an option trade neither makes nor loses money. Long call: strike plus premium. Long put: strike minus premium.
- Assignment
- When an option seller must fulfill the contract because a holder exercised: delivering shares on a call, or buying them on a put.
- Exercise
- Using an option’s right: buying shares at the strike with a call, or selling them at the strike with a put.
- Theta (time decay)
- How much value an option loses each day from time passing, with everything else unchanged. Long options usually have negative theta.
- Extrinsic value (time value)
- The part of an option’s price above its intrinsic value: what you pay for time and the chance of movement. It shrinks to zero by expiration.
- Implied volatility (IV)
- The future volatility that option prices imply, quoted as an annual percentage. Higher IV means pricier options.
- 0DTE (zero days to expiration)
- Options that expire the same day they trade. SPY and SPX list expirations every weekday, so 0DTE contracts trade daily.
- Options Disclosure Document (ODD)
- The OCC booklet “Characteristics and Risks of Standardized Options.” Brokers must provide it before you can trade options.
Sources and further reading
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Educational content, not investment advice. Lessons describe how markets and models tend to behave. They don’t tell anyone what to buy, sell or hold. Interactive examples use illustrative sample data, and simulator results are simulated — not actual trading. Options involve risk and are not suitable for all investors.
Risk disclosureCharacteristics and Risks of Standardized Options (OCC) (opens in a new tab)