大致上,VIX is the forward-looking volatility of SPX
volatility 的量纲是 1/Sqrt(T),T代表时间量纲
随机过程里有个 Dambis-Dubins-Schwarz 定理:有二阶矩的鞅(martingale)都可以用时间变换转换成标准的布朗运动。
扯远了,烟鬼正传:定投的频率(或时间强度)与 VIX 平方成正比。比如 VIX = 15(0.15%)时每月定投1万,VIX = 21.2(0.212%)时就每月定投2万
大致上,VIX is the forward-looking volatility of SPX
volatility 的量纲是 1/Sqrt(T),T代表时间量纲
随机过程里有个 Dambis-Dubins-Schwarz 定理:有二阶矩的鞅(martingale)都可以用时间变换转换成标准的布朗运动。
扯远了,烟鬼正传:定投的频率(或时间强度)与 VIX 平方成正比。比如 VIX = 15(0.15%)时每月定投1万,VIX = 21.2(0.212%)时就每月定投2万
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