What is volatility and how does it work? | Fidelity Volatility is a significant, unexpected, rapid fluctuation in trading prices due to a large swath of people buying or selling investments around the same time In the stock market, volatility can affect groups of stocks, like those measured by the S P 500 ® and Nasdaq Composite indexes
Volatility (finance) - Wikipedia In finance, volatility (usually denoted by "σ") is the degree of variation of a trading price series over time, usually measured by the standard deviation of logarithmic returns Historic volatility measures a time series of past market prices
What Is Volatility? Understanding Market Swings With investments, volatility refers to changes in an asset's or market's price — especially as measured against its usual behavior or a benchmark Volatility is often expressed as a percentage:
What Is Market Volatility? - The H Group What is market volatility? Learn about the potential for instability in the stock market and other financial markets in this practical guide