Private and public disclosures and the efficiency of stock prices

Abstract

In this paper I examine the effects of private and public disclosures on the informational efficiency of stock prices. In addition to making a public announcement such as an earnings announcement, a public firm can make private disclosure to an analyst. If the analyst's relative information advantage is below a threshold level, private disclosure to the analyst leads to more efficient stock price. I demonstrate that the allocation of information across market participants is an important determinant of price efficiency. While accounting regulators often argue the need for equal access to information, the paper shows that there are conditions under which a limited amount of informational inequality may lead to more efficient stock prices.