Market volatility refers to the degree of fluctuation or variability of prices or returns of a financial market or individual security. It is the measure of the extent to which prices fluctuate from the mean or average over a certain period of time.

High volatility indicates that prices are moving rapidly in an upward or downward direction, while low volatility indicates that prices are relatively stable. Market volatility is influenced by various factors such as economic news, political events, investor sentiment, and supply and demand factors.