Glossary term
Options
Options are contracts that give the buyer the right, but not the obligation, to buy or sell an underlying asset at a set price.
Updated
Read time
What Are Options?
Options are contracts that give the buyer the right, but not the obligation, to buy or sell an underlying asset at a set price within a specified time. The seller, or writer, takes on an obligation if the buyer exercises the option.
Options can be used for hedging, income, speculation, or structured portfolio strategies. They can also create losses that are difficult to understand if the investor focuses only on the small upfront premium and ignores expiration, leverage, assignment, and liquidity risk.
Key Takeaways
- A call option gives the buyer the right to buy the underlying asset.
- A put option gives the buyer the right to sell the underlying asset.
- The strike price is the price at which the option can be exercised.
- The premium is the price paid for the option contract.
- Options can reduce, reshape, or amplify risk depending on the strategy.
How Options Work
An option contract has an underlying asset, a strike price, an expiration date, and a premium. The buyer pays the premium to obtain rights under the contract. The seller receives the premium and accepts the related obligation if the option is exercised or assigned.
A call option may gain value if the underlying asset rises above the strike price by enough to justify the premium paid. A put option may gain value if the underlying asset falls below the strike price by enough to justify the premium. Time value, volatility, interest rates, dividends, and market liquidity can also affect option prices.
Call and Put Basics
Option type | Buyer right | Common use | Main buyer risk |
|---|---|---|---|
Call | Right to buy | Seeking upside exposure or covering a short position | Losing the premium if the option expires worthless |
Put | Right to sell | Hedging downside or seeking exposure to price declines | Losing the premium if the option expires worthless |
Strategy Changes the Risk
The word options covers very different trades. A covered call sells upside on stock the investor already owns. A protective put can act like temporary downside insurance. A long call is a leveraged bullish trade. An uncovered short option can create obligations that are much larger than the premium received.
Because the same contract type can be used in conservative or speculative ways, investors should evaluate the whole strategy rather than the option label alone. Position size, margin requirements, assignment risk, and the investor's ability to handle the underlying shares or cash settlement all matter.
Where Options Risk Comes From
Options risk depends on the strategy. Buying a basic listed option can limit the buyer's loss to the premium paid, but that premium can still go to zero. Selling options can create larger obligations, especially when the position is uncovered. Complex spreads can have defined risk on paper while still creating execution, assignment, and liquidity problems.
Expiration is central. An investor can be right about the direction of a stock but wrong about timing and still lose money. Options also require attention to contract size, exercise style, margin rules, tax treatment, and brokerage approval levels.
What Investors Should Review Before Trading
Before using options, investors should understand the objective of the trade, maximum gain, maximum loss, breakeven point, expiration date, assignment risk, liquidity, and how the position behaves if the underlying asset moves sharply. Options should not be treated as a shortcut around portfolio discipline.
The same instrument can be conservative in one strategy and highly speculative in another. A protective put on an existing holding is different from selling naked calls, even though both involve options.
The Bottom Line
Options are contracts that give buyers rights and sellers obligations tied to an underlying asset, strike price, premium, and expiration date. They can be useful tools, but the risk depends heavily on the strategy and should be understood before trading.