Futures and options are the most common types of derivatives used in financial markets. Futures involve a contract where the buyer and seller agree to a deal at a future date at a pre-decided price, obligating both parties. Options give the buyer the right, but not the obligation, to buy or sell the underlying asset at a future date at a pre-decided price, in exchange for paying a premium to the seller who is obligated. Derivatives allow investors to profit from rising or falling prices, and options allow investors to limit their losses to the premium amount.