Hendershott, Patric H.; Order, Robert Van - National Bureau of Economic Research (NBER) - 1987
Mortgages, like all debt securities, can be viewed as risk-free assets plus or minus contingent claims that can be usefully viewed as options. The most important options are: prepayment, which is a call option giving the borrower the right to buy back the mortgage at par, and default, which is a...