一只股票风险指标β系数直接反应出，The，β,市场组合变动与投资收益的相关性。
of a stock is how much it reacts to movements in the market portfolio.
金融工具的公允价值变动计入当期损益，不但增加了我国上市公司收益的波动性，整体而言对净利润影响也举足轻重；
The fair value of financial instruments included in current changes in the profit and loss, not only makes up the profits for listed companies but also has a decisive impact on the net profit;
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