The Crowding-In Effect of Public Information on Private Information Acquisition

Abstract The dissemination of public information regarding an asset’s fundamental value can encourage the acquisition of private information by informed traders, leading to a crowding-in effect. Competing with the crowding-out effect analyzed in prior research, the crowding-in effect shapes the demand for private information in a hump-shaped curve against public information quality. I examine how a for-profit information seller strategically provides information, exploiting this hump-shaped demand curve, and offer theoretical support for the coexistence of free and paid information. The model yields distinctive insights into the equilibrium information structure and market quality when the crowding-in effect drives public information dissemination.