lee2025-07-01 13:25:35
老师好 这个公式红色框框里和蓝色框框里都是指的implied volatility吗?红色K^2*(T-t/T)是在小t时间的implied volatility,蓝色是T=0时间的original volatility,是这么区分的吗
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婷婷2025-07-02 09:05:21
同学你好,
variance swap的题表述都很清楚的,
不会在字眼上玩文章,
附你个例子你就懂了。
Olivia Santos trades strategies that systematically sell volatility on the S&P 500 Index. She sells $50,000 vega notional of a one-year variance swap on the S&P 500 at a strike of 20% (quoted as annual volatility). Now six months have passed, and the S&P 500 has experienced a realized volatility of 16% (annualized). On the same day, the fair strike of a new six-month variance swap on the S&P 500 is 19%.Determine the following:
1 The current value of the variance swap sold by Santos (note that the annual interest rate is 2.5%)
2 The settlement amount at expiration of the swap if the one-year realized volatility is 18%
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