A futures exchange or futures market is a central financial exchange where people can trade standardized futures contracts defined by the exchange. Futures contracts are derivatives contracts to buy or sell specific quantities of a commodity or financial instrument at a specified price with delivery set at a specified time in the future. Futures exchanges provide physical or electronic trading venues, details of standardized contracts, market and price data, clearing houses, exchange self-regulations, margin mechanisms, settlement procedures, delivery times, delivery procedures and other services to foster trading in futures contracts. Futures exchanges can be organized as non-profit member-owned organizations or as for-profit organizations. Futures exchanges can be integrated under the same brand name or organization with other types of exchanges, such as stock markets, options markets, and bond markets. Non-profit member-owned futures exchanges benefit their members, who earn commissions and revenue acting as brokers or market makers. For-profit futures exchanges earn most of their revenue from trading and clearing fees.