We hypothesize and find that (1) earnings conservatism, the tendency of firms to recognize bad news in earnings on a more timely basis than good news, is substantially greater in portfolios of firms with lower price‐to‐book ratios than in portfolios of firms with higher price‐to‐book ratios; and (2) the negative association between earnings conservatism and the price‐to‐book ratio stems primarily from the accrual component of earnings, not the operating cash flow component of earnings. Our results suggest that studies using earnings‐returns associations to investigate cross‐sectional or time‐series differences in earnings conservatism risk drawing erroneous inferences unless the research designs control for cross‐sectional or time‐series variation in price‐to‐book ratios.

We hypothesize that firms' 10-K market risk disclosures, recently mandated by SEC Financial Reporting Release No. 48 (FRR No. 48), reduce investors' uncertainty and diversity of opinion about the implications, for firm value, of changes in interest rates, foreign currency exchange rates, and commodity prices. We argue that this reduced uncertainty and diversity of opinion should dampen trading volume sensitivity to changes in these underlying market rates or prices. Consistent with this hypothesis, we find that after firms disclose FRR No. 48-mandated information about their exposures to interest rates, foreign currency exchange rates, and energy prices, trading volume sensitivity to changes in these underlying market rates and prices declines, even after controlling for other factors associated with trading volume. The observed declines in trading volume sensitivity are consistent with FRR No. 48 market risk disclosures providing useful information to investors.