In finance, a call option, often simply labeled a "call", is a contract between the buyer and the seller of the call option to exchange a security at a set price. The buyer of the call option has the right, but not the obligation, to buy an agreed quantity of a particular commodity or financial instrument from the seller of the option at or before a certain time for a certain price. This effectively gives the owner a long position in the given asset. The seller is obliged to sell the commodity or financial instrument to the buyer if the buyer so decides. This effectively gives the seller a short position in the given asset. The buyer pays a fee for this right. The term "call" comes from the fact that the owner has the right to "call the stock away" from the seller.

वित्तीय शब्दावली में, कॉल ऑप्शन एक निर्धारित मूल्य पर सुरक्षा का आदान-प्रदान करने के लिए कॉल ऑप्शन के खरीदार और विक्रेता के बीच एक अनुबंध है। इसे अक्सर "कॉल" कहा जाता है।