A Discussion of “What Do Management Earnings Forecasts Convey About the Macroeconomy?”
讨论Bonsall等人发现管理层盈利预测发布时与股市整体回报正相关，但指出该宏观信息的本质尚不明确，并质疑其与已实现盈利的宏观信息有何不同。
While numerous studies in accounting and finance are devoted to predicting firm-specific earnings and understanding the forecasting behavior of analysts and management, it is unclear whether or how accounting information at the micro level can be applied to the macroeconomy. Bonsall, Bozanic, and Fischer [2012], henceforth BBF, are part of a growing literature that seeks to address this question. BBF document that firm-specific management forecast releases are significantly positively associated with announcement-window aggregate stock market returns and further show that this significant market reaction is concentrated among “bellwether” firms. In this discussion, I argue that although BBF provide convincing evidence on the presence of timely macroeconomic information in management earnings forecasts, the exact nature of this information is somewhat of a black box. BBF’s results also raise the question of how the macroeconomic information content of management earnings forecasts differs from that of realized earnings. The answers to these questions can help reconcile the significantly positive association between management forecast surprises and aggregate stock returns with the previously documented negative relation between realized earnings surprises and aggregate stock returns.