What is Volatility?

In finance, volatility (symbol σ) is the degree of variation of a trading price series over time as measured by the standard deviation of logarithmic returns. Historic volatility is derived from time series of past market prices. An implied volatility is derived from the market price of a market traded derivative (in particular an option). Volatility as described here refers to the actual volatility, more specifically: actual current volatility of a... Read More