Do analysts affect bad news timeliness?
研究了分析师跟踪对坏消息在盈余中反映速度的影响，发现分析师覆盖减少会降低坏消息及时性，且该效应在覆盖较低的公司中更强。
I investigate the effect of analysts on the speed with which bad news is reflected in earnings. Intuitively, the more analysts that cover a firm, the more costly it will be for the firm to keep bad news suppressed. Thus, analyst coverage should positively affect bad news timeliness (BNT) (but not necessarily the differential timeliness of bad news over good news, or conditional conservatism). Using brokerage house mergers as a natural experiment with a difference-in-differences design, I find that an exogenous decrease in analyst coverage decreases BNT; that is, analysts positively affect BNT. The decrease in BNT is robust to controlling for unobserved firm heterogeneity, using a propensity score matched sample, persists for up to three years after the brokerage house merger, and is stronger for firms with relatively low analyst coverage before the merger. The result improves our understanding of how analysts affect a firm's information environment.