Most financial information is provided by issuers as part of mandatory filings for periodic reports (10-K, 10-Q), significant events (8-K), etc.; however, firms also provide information in a voluntary manner, such as press releases or management forecasts. The existence of both voluntary and mandatory disclosure poses a few fundamental questions that cannot be fully answered by considering only one of those two forms of disclosure without the other: are there any differences between what one would expect firms to disclose as part of mandatory requirements versus as part of voluntary disclosure channels? How does the presence of voluntary disclosure as an alternative communication channel change politically determined mandatory disclosure, and vice-versa, how should we expect such rules to affect voluntary disclosure? Finally, prior literature has generally interpreted information that is not publicly released as potentially hiding bad information, but is this still the case when mandatory disclosure is solved endogenously?