At Yahoo Finance, you get free stock quotes, up-to-date news, portfolio management resources, international market data, social interaction and mortgage rates. Covered Call Calculator · Options Quotes · Historical & Implied Volatility · Todays Most Active Options · Video Series · Investor Resources · FAQs · Options. 1. A statistical measure of the dispersion of returns for a given security or market index. Volatility can either be measured by using the standard deviation or.
Symbol for volatility Video