We develop a model to rationalize and examine so-called “research bubbles”, i.e. research activities based on … overoptimistic beliefs about the impact of this research on the economy. Research bubbles occur when researchers selfselect into … research activities and the government aggregates the assessment of active researchers on the way advances in research may spur …

, arises because these models load all uncertainty onto the supply side of the economy. We propose a simple theory of asset … pricing in which demand shocks play a central role. These shocks give rise to valuation risk that allows the model to account …

has received little empirical documentation regarding its demand, supply, or pricing. This paper bridges the gap. First, I …

, arises because these models load all uncertainty onto the supply side of the economy. We propose a simple theory of asset … pricing in which demand shocks play a central role. These shocks give rise to valuation risk that allows the model to account …

We show that mutual fund ratings generate correlated demand that creates systematic price fluctuations. Mutual fund …. Style-level correlated demand via mutual funds immediately became muted, significantly altering the time-series and cross …