Recent work suggests that institutional investors execute profitable trades based on private information about earnings and returns. We provide new evidence on the prevalence and sources of such informed trading by (1) testing for the creation and liquidation of positions based on private information, (2) introducing private information proxies that reflect the size and nature of an institution's position in each portfolio firm, and (3) using a methodology that examines multiple investor characteristics simultaneously at the institution‐firm level. We find that changes in ownership by institutions with large positions in a firm are consistent with informed trading. However, other previously documented proxies for private information produce results more consistent with risk‐based trading (e.g., investment style) or insignificant in the presence of other proxies (e.g., fiduciary type). We also find that informed trading is more prevalent in small firms and when the large positions are taken by investment advisers and large institutions.

We use the context of a company's initial public offering (IPO) of equity securities as a capital‐markets setting to empirically study the economic consequences of endogenous disclosure. In particular, we examine the relation between the extent of dollar detail an IPO issuer provides regarding their intended use of proceeds and first‐day underpricing. We document substantial variation in the specificity of this disclosure and find that an increase in such specificity is associated with lower IPO underpricing. Overall, our results suggest that IPOs that provide specific use‐of‐proceeds disclosures have less ex ante uncertainty, in the sense that these disclosures help investors estimate the dispersion of secondary market values. Our paper contributes to the empirical accounting literature by documenting an association between voluntary disclosure and what is arguably the foremost cost of raising initial equity capital (i.e., IPO underpricing).

We use the context of a company's initial public offering (IPO) of equity securities as a capital-markets setting to empirically study the economic consequences of endogenous disclosure. In particular, we examine the relation between the extent of dollar detail an IPO issuer provides regarding their intended use of proceeds and first-day underpricing. We document substantial variation in the specificity of this disclosure and find that an increase in such specificity is associated with lower IPO underpricing. Overall, our results suggest that IPOs that provide specific use-of-proceeds disclosures have less ex ante uncertainty, in the sense that these disclosures help investors estimate the dispersion of secondary market values. Our paper contributes to the empirical accounting literature by documenting an association between voluntary disclosure and what is arguably the foremost cost of raising initial equity capital (i.e., IPO underpricing).

The test developed in Mishkin [1983] (hereafter, MT) is widely used to test the rational pricing of accounting numbers. However, contrary to the perception in the accounting literature, the exclusion of variables from the MT's forecasting and pricing equations leads to an omitted variables problem that affects inferences about the rational pricing of accounting variables. Only if the omitted variables are rationally priced is their exclusion irrelevant. Failure to recognize this issue leads accounting researchers to employ the MT without appreciating how omitted variables affect the inferences they draw. We demonstrate that when additional explanatory variables are included in the MT, the rational pricing of accruals is not rejected. That is, the accrual anomaly documented in Sloan [1996] vanishes when additional explanatory variables are incorporated into the MT. We also show that in accounting research settings, where samples are large, ordinary least squares (OLS) is equivalent to the MT. As a result, accounting researchers should consider using OLS or be more explicit about the exact advantages of the MT over OLS in their research setting.