SKEW Index vs VIX Index
Figure 1. SKEW Index vs SPX Index In [1], it states that: Note the recent move lower in skew . Downside protection has become cheaper in terms of volatility (relatively speaking). Are we looking for a similar set up to the one we saw in September? Is Santa still alive? What's SKEW Index? The SKEW index is calculated using S&P 500 options that measure tail risk—returns two or more standard deviations from the mean—in S&P 500 returns over the next 30 days . The primary difference between the VIX and the SKEW is that the VIX is based upon implied volatility round the at-the-money (ATM) strike price while the SKEW considers implied volatility of out-of-the-money (OTM) strikes . SKEW values generally range from 100 to 150 where the higher the rating, the higher the perceived tail risk and chance of a black swan event . A SKEW rating of 100 means the perceived distribution of S&P 500 returns is normal and, therefore, the probability of ...