Beta is a common measure of the correlation between an individual stock and the wider market, often using the S&P 500 index as a benchmark. A beta value greater than zero indicates that the stock is positively correlated with the market, meaning that its share price tends to rise when the market rises. If a stock has a beta less than 1.0, its movements will be smaller than the movements of the wider market. A beta higher than 1.0 indicates that the stock will fluctuate more than the market as a whole.