"We use bank stock returns to develop an ex-ante measure of the distortion created by the implicit collective guarantee extended to large U.S. financial institutions. The average return on a stock portfolio that goes long in the largest U.S. commercial banks and short in the smallest banks is...

"We propose an arbitrage-free stochastic discount factor (SDF) model that jointly prices the cross-section of returns on portfolios of stocks sorted on book-to-market dimension, the cross-section of government bonds sorted by maturity, the dynamics of bond yields, and time series variation in...