beta coefficient be‧ta co‧ef‧fi‧cient [ˈbiːtə kəʊˌfɪʆnt ǁ ˈbeɪtə koʊ-] also ˈbeta ˌfactor, beta noun [singular]
FINANCE STATISTICS a measurement of the amount of change in a share price over a period of time, compared with the average amount of change in all share prices
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beta coefficient UK US noun [C, usually singular] (also beta factor, also beta)
► FINANCE, STOCK MARKET a measurement of how much the value of a particular share has changed in a particular period of time, compared to the average change in the value of shares in the stock market as a whole during that period: »
Standard and Poor's quoted the company's beta coefficient as 1.45.
»A fund with a high beta coefficient gives greater returns in a rising market.
Financial and business terms. 2012.