A put option in the stock exchange is an option

On a stock exchange, an option contract gives its holder the right, but not the obligation, to buy or sell a stated quantity of shares at a fixed price within a set period. There are two basic types, distinguished by which right they grant.

A put option grants the holder the right to sell shares at the agreed price. The holder buys this right hoping the market price will fall, so they can sell at the higher, pre-agreed price and profit from the difference. This is the opposite of a call option, which grants the right to buy.

A frequent confusion is assuming every option is about buying, since buying shares is the more familiar transaction to beginners. Remembering the pairing helps: a call is linked to buying, and a put is linked to selling shares onto the market.

Exam takeaway: whenever a question names put or call in the context of options, immediately map put to the right to sell and call to the right to buy.