Recent studies suggest the apparent delay in the stock‐price response to earnings announcements (i.e., post‐earnings announcement drift) is caused by investors who underestimate the autocorrelation of seasonally‐differenced earnings (persistence). I present results that suggest: (1) a firm’s future persistence is predictable on the basis of its past persistence; (2) the immediate stock‐price response to earnings is positively related to historical persistence; (3) post‐earnings‐announcement drift is independent of historical persistence; and (4) consistent with (2) and (3), the difference between a firm’s current observed persistence and that implied in stock prices is independent of its historical persistence. These results extend prior research by demonstrating that investors are aware not only that seasonally‐differenced earnings are autocorrelated, but that investors recognize firm‐specific differences in the magnitude of the autocorrelation.

This paper examines changes in the information content of earnings over the past three decades using the two metrics from Beaver [1968]: abnormal trading volume and abnormal return volatility. We find no evidence of a decline in the information content of earnings announcements over the past three decades, as measured by both abnormal trading volume and return volatility around quarterly earnings announcements. If anything, our results suggest an increase over time in the informativeness of quarterly earnings announcements. Variables reflecting changes in firm‐specific factors account for a portion of the observed increase.

We find no significant association between non–audit service fees and impaired auditor independence, where auditor independence is surrogated by auditors’ propensity to issue going concern audit opinions. We also find no association between going concern opinions and either total fees or audit fees. In addition, our findings are robust to controlling for unexpected fees, to controlling for endogeneity among our variables, and to several alternative research design specifications. Our results are consistent with market–based incentives, such as loss of reputation and litigation costs, dominating the expected benefits from compromising auditor independence.