Market The decade that saw volatility trading come of age Updated : December 31, 2019 11:20 AM IST Among the myriad Wall Street legacies of the soon-ending 2010s has been the emergence of market volatility. The Cboe Volatility Index — nicknamed as ‘Wall Street’s fear index,’ — is on track to end the decade at a level about a third lower than its lifetime average. Trading volatility, or “vol” in Wall Street parlance, came of age in a big way in the ‘10s. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.