beta
β系数
This ratio measures the sensitivity of an individual asset’s price to that of the overall market. A stock that tends to go up even more rapidly than the market when it is rising, and drop more precipitously when it is falling, is described as “high beta”; one that moves less violently than the market is “low beta”.
该比率衡量单个资产价格对整体市场价格的敏感度。如果一只股票在上涨时往往比市场上涨得更快，在下跌时往往比市场下跌得更快，则被称为“高β系数”；如果股票的波动幅度小于市场，则被称为“低β系数”。
