Corporate conference calls are large-scale telephone conference calls during which managers make presentations to and answer questions from various market participants, usually about earnings. In this paper, we sample 1,056 corporate conference calls made by 808 firms during February-November 1995 to provide evidence on three questions: (1) whether conference calls provide information to stock market participants, (2) whether investors have equal access to the information provided during these calls, and (3) why managers of some firms hold conference calls while managers of other firms do not. We believe this research is important because managers' use of conference calls has grown enormously, yet we know little about how these calls affect investors.1

This study evaluates corporate voluntary disclosure of forward‐looking information under the safe harbor provision of the Private Securities Litigation Reform Act of 1995. Using a sample of 523 computer hardware, computer software, and pharmaceutical firms, we find a significant increase in both the frequency of firms issuing earnings and sales forecasts and the mean number of forecasts issued following the Act’s passage. To provide more direct evidence that our findings are attributable to the Act reducing firms’ legal exposure, we develop a proxy for litigation risk and examine whether the increase in disclosure is more pronounced for firms at greatest risk of a lawsuit. As expected, we find that the change in disclosure is increasing in firms’ ex ante risk of litigation. Finally, we report that the safe harbor had no adverse impact on the quality of forward‐looking information. Forecast errors, whether directional or non‐directional, were not significantly affected by the Act’s passage.