The VIX index has been around for decades, measuring the implied volatility of the S&P 500 stocks, the most diversified U.S. stock market index. Implied volatility is a consensus sentiment ...

Maxwell Grinacoff, head of US equity derivatives research at UBS, said there had been “rampant” buying of options that would gain if the Vix index of short-term volatility in US stocks ...

The current TMC Research VIX Risk Indicator (VRI) reading is mildly negative (-0.24, as of 2:15pm Eastern on Feb. 6). That aligns with a neutral reading for the VIX outlook. In other words ...

The Cboe Volatility Index, better known as the VIX, surged more than 20% in early trading, topping the 20 level for the first time in a week. 20 is roughly consistent with its long-term average.

The CBOE VIX index, a measure of expected S&P 500 volatility that's known as Wall Street's fear gauge, is soaring more than 30% to just above 19, as traders pay up for put options. Put options ...

Westend61 / Getty Images Some of the most commonly used tools to gauge relative levels of stock market volatility are the Cboe Volatility Index (VIX), the average true range (ATR), and Bollinger ...