衍生工具
derivative
價格取決於或得自一項或多於一項相關資產的證券。衍生工具本身純粹是一份由兩名或以上當事人所訂立的合約，其價值由相關資產的走勢來釐定。最常見的相關資產包括股票、債券、商品、貨幣、利率及市場指數。高槓桿比率是大部分衍生工具均具有的特點。
Financial instruments whose value varies with the value of an underlying asset (such as a stock, BOND, commodity or currency) or index such as interest rates. Financial instruments whose characteristics and value depend on the characterization of an underlying instrument or asset.