We present evidence that high concentration in local mortgage lending reduces the sensitivity of mortgage rates and refinancing activity to mortgage-backed security (MBS) yields. A decrease in MBS yields is typically associated with greater refinancing activity and lower rates on new mortgages....

In this paper, we develop a new model for government cost-benefit analysis in the presence of risk. In our model, a benevolent government chooses the scale of a risky project in the presence of two key frictions. First, there are market failures, which cause the government to perceive project...

We develop a model in which specialized bond investors must absorb shocks to the supply and demand for long-term bonds in two currencies. Since long-term bonds and foreign exchange are both exposed to unexpected movements in short-term interest rates, a shift in the supply of long-term bonds in...