Option chain data is the complete picture pertaining to option strikes of a particular stock or index in a single frame. In the Option chain frame, the strike price is at the centre and all data pertaining to calls and puts on the same strike are presented next to each other.
Options trading is a type of financial trading that allows investors to buy or sell the right to purchase or sell an underlying asset at a fixed price, at a future date. Options trading operates on the basis that the buyer has the option to exercise the contract but is not under any obligation to do so.