"This paper studies the dynamics of portfolio rebalancing and consumption smoothing in the presence of non-convex portfolio adjustment costs. The goal is to understand a household's response to income and return shocks. The model includes the choice of two assets: one riskless without adjustment...

"We show that long run consumption risk models imply that the covariance matrix of the logarithm of price to dividend (P/D) ratios of stocks has a strict factor structure. Factor analysis of the P/D ratios of 25 portfolios formed by sorting stocks based on their size and book to market ratio...