Options: A First Look
What calls and puts are, the four terms every option has, and how an option's payoff works, so you can recognize the leverage and risk before anyone pitches you on them.
The short version
An option gives its buyer the right, but not the obligation, to buy (a call) or sell (a put) an asset at a set price, the strike, until a set date. The buyer pays a premium, and one standard stock option covers 100 shares. A buyer can lose the whole premium; a seller collects the premium but takes on an obligation, and selling a call without owning the stock has theoretically unlimited risk. Options magnify results in both directions, which is why they're powerful and why many people lose money with them.
By the end of this lesson, you'll be able to
- Define calls, puts, strike price, expiration, and premium
- Work out an option's result at expiration
- Explain why options magnify both gains and losses, and who carries the most risk
Why this matters
This lesson is optional, and it covers definitions only. Options show up in nearly every brokerage app and all over social media, often pitched as a quick way to multiply a small amount of money. Knowing how they work makes it easy to see why that pitch leaves out the most important part. The Derivatives depth track covers options in full.
What an option is
An Option. A contract that gives its buyer the right, but not the obligation, to buy or sell an asset at a set price on or before a set date. Glossary is a Derivative. A contract whose value comes from something else, called the underlying asset. Options and futures are derivatives. Glossary, a contract whose value comes from something else, usually a stock. It gives the buyer the right, but not the obligation, to buy or sell a set quantity of that asset at a set price.1 There are two kinds:
- A Call option. An option that gives its buyer the right to buy the underlying asset at the strike price. More on this term gives the buyer the right to buy. The seller of the call must sell the shares if the contract is assigned.
- A Put option. An option that gives its buyer the right to sell the underlying asset at the strike price. More on this term gives the buyer the right to sell. The seller of the put must buy the shares if the contract is assigned.1
The rest of this lesson is for members
Still to come in this lesson: The four terms every option has, Who carries the risk, the key takeaways, and 2 quiz questions with explanations.
Membership opens every lesson in the curriculum, the capstone projects, the interactive tools, and the members-only channels in the Hyperion Entities Discord. The first lesson of every module stays free.
Go deeper
- Calls and PutsDerivatives (depth track)
- Strike, Expiration, and PremiumDerivatives (depth track)
- Covered Calls and Protective PutsDerivatives (depth track)
- The Major Risks of OptionsDerivatives (depth track)
Learn more
- Characteristics and Risks of Standardized OptionsThe Options Clearing Corporation
- Investor Bulletin: Opening an Options AccountInvestor.gov, U.S. Securities and Exchange Commission
Notes and sources
- FINRA. Options. Checked 2026-10-13. Back to text