美国权威监管机构对于外汇合约的定义如下：
Forex contracts involve the right to buy or sell a certain amount of a foreign currency at a fixed price in U.S. dollars. Profits or losses accrue as the exchange rate of that currency fluctuates on the open market. It is extremely rare that individual traders actually see the foreign currency. Instead, they typically close out their buy or sell commitments and calculate net gains or losses based on price changes in that currency relative to the dollar over time.
Forex markets are among the most active markets in the world in terms of dollar volume. The participants include large banks, multinational corporations, governments, and speculators. Individual traders comprise a very small part of this market. Because of the volatility in the price of foreign currency, losses can accrue very rapidly, wiping out an investor’s down payment in short order.
什么意思呢？
财富港外汇小编（微信号：qiaomuziben）给您解释下。
所谓外汇合约指的是有权按照某一汇率以本国货币去买卖外国货币的一种合约，盈利和损失均以所买卖的外国货币兑本国货币的汇率变动来计量。一般来说，个人交易者不会亲眼见到合约中的外国货币，只会在平仓的时候依据该外国货币相对于本国货币的汇率的变动，来最终确定以本国货币计算的盈亏。
从巨额的成交量来看，外汇市场是世界上最活跃的市场之一。其参与者包括：大型银行，多边组织，国家政府部门，投机者。个人交易者只占外汇市场非常小的一部分，外汇市场上，货币的价格波动十分剧烈，投资者很可能很快就亏完了本金。
外汇交易需要开户吗？外汇交易当然需要开户。
前面提到，因为绝大部分个人投资者的资金量非常有限，占整个外汇市场非常小的份额，不具备直接进入到与全球外汇大型外汇投资者进行交易的资格，因此需要借助一些介绍经纪商进行开户才能参与到外汇市场中来。
外汇交易需要开户吗？答案是肯定的。财富港外汇能开户吗？答案也是肯定的。
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