In addition to disclosure regulation, the Securities and Exchange Commission (SEC) periodically intervenes in the market making process to facilitate fair, orderly, and efficient capital markets. For example, responding to calls for increased market maker competition on the Nasdaq in the early...

We examine the association between I/B/E/S's disclosure of non-GAAP earnings and investor uncertainty around earnings announcements. On one hand, investor uncertainty may decrease with I/B/E/S's non-GAAP disclosure because these disclosures make investors aware of alternative performance...