Derivatives are financial contracts whose value is dependent on an underlying asset. There are several types of derivatives including forwards, futures, options, and swaps. Derivatives allow participants to hedge risks, speculate, or engage in arbitrage. Derivatives can be exchange-traded or over-the-counter. Common derivatives include commodity derivatives, financial derivatives, and complex derivatives involving interest rates. Forwards, futures, options, and swaps each have unique features regarding trading, settlement, and valuation. Overall, derivatives help investors and businesses manage risks in global financial markets.