李同学2023-08-15 13:45:49
老师,第三题求variance swap时,老师有先说了是sell volatility,所以收fixed variance,支 realized variance,然后计算时是 fixed variance-realized variance,需要这样看谁减谁吗?记得公式是 realized variance - K方。答案中也是。就按公式算可以吗?
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Simon2023-08-15 16:58:00
同学,下午好。公式里默认是买方的。这里是卖方,所以是收fixed variance,支 realized variance,然后计算时是 fixed variance-realized variance
如果是买方:
In a variance swap, the buyer of the contract will pay the difference between the fixed variance strike agreed on in the contract and the realized variance (annualized) on the underlying over the period specified and applied to a variance notional。
variance swap买方,会支付(variance strike- realized variance),所以是支K方,收realized variance。而最后的盈利就是 realized variance - K方
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