F&O Trading lets you trade in futures and options (F&O) segment. F&O contracts are derivative instruments traded on the stock exchange. The instrument has no independent value, with the same being ‘derived’ from the value of the underlying asset. The asset could be securities, commodities or currencies. Its value varies with the value of the underlying asset. The contract or the lot size is fixed. Futures contract: means you agree to buy or sell the underlying security at a 'future' date. If you buy the contract, you promise to pay the price at a specified time. If you sell it, you must transfer it to the buyer at a specified price in the future. Options contract: This gives the buyer the right to buy/sell the underlying asset at a predetermined price, within, or at end of a specified period. He is, however, not obligated to do so. The seller of an option is obligated to settle it when the buyer exercises his right.