This paper examines disclosure decisions of _rms facing greater competition for limited investor resources. Theory posits that firms use disclosure to compete with other firms for informed investors when investor resources are limited (Fishman and Hagerty, 1989). Consistent with this investor-competition role for disclosure, we find that when firms compete more for investors, they issue more guidance, especially capital expenditure forecasts. The guidance increases liquidity and price efficiency, but the effects decrease as guidance serves more of an investor-competition role, consistent with disclosures of one firm imposing a negative externality on other firms that compete for the same investor resources.