PaymentStubIndex2CapRate

The cap rate, if any, which applies to the second floating rate. The cap rate (strike) is only required where the floating rate on a swap stream is capped at a certain level. The cap rate is assumed to be exclusive of any spread and is a per annum rate, expressed as a decimal. A cap rate of 5% would be represented as 0.05.

若存在，则针对第二浮动利率的封顶比率。封顶比率（敲定比率）仅在交换流中的浮动利率被限制在特定水平时才需要求。封顶比率假定不包括任何利差，并以年化比率的形式表示，用小数表示。5%的封顶比率将表示为0.05。