差价合约可以反映股票或指数的价格变化并提供价格变动所带来的盈利或亏损,而无须实际拥有股票或指数期货。差价合约CFD是用保证金交易的,同股票实物交易一样,盈利或亏损是由您的买入和卖出价格决定的,差价合约CFD相对传统股票实物交易具有很多优势。 In finance, a contract for difference (or CFD) is a contract between two parties, typically described as "buyer" and "seller", stipulating that the buyer will pay to the seller the difference between the current value of an asset and its value at contract time. (If the difference is negative, then the seller pays instead to the buyer.) In effect CFDs are financial derivatives that allow traders to take advantage of prices moving up (long positions) or prices moving down (short positions) on underlying financial instruments and are often used to speculate on those markets.