We examine information spillover as a source of stock return synchronicity, where information about highly-followed "prominent" stocks is used to price other "neglected" stocks sharing a common fundamental component. We find that stocks followed by few analysts co-move significantly with...

Because positive spillovers give investment in innovation a social rate of return several times higher than its internal rate of return to innovators, innovation is chronically underfunded. Recurrent manias, panics and crashes in stock markets inundate "hot" new technologies with capital. To the...