这是英文意思,我按照它的意思是对每一笔管理层盈余预测匹配匹配了前21天到前2天的个股收益率和市场回报指数,然后用个股收益率减去了市场收益指数,然后在累加求和 但是Stock return算出来很大,英文原意是这个意思吗?
Stock return:Annualized standard deviation of monthly stock returns over the year ending in the most recent fiscal period end before the management forecast announcement date.