Second Chances: Subprime Mortgage Modification and Redefault

We examine how the structure of mortgage modification affects the likelihood that the mortgage redefaults over the next year. We focus on pre‐HAMP (Home Affordable Modification Program) subprime modifications where the borrower was seriously delinquent and the monthly payment was reduced. The average redefault rate over the year following the modification is 56%. Redefault rates decline with the magnitude of reduction in monthly payments, and redefault rates decline more when the payment reduction is achieved through principal forgiveness as compared to lower interest rates.     

Incomplete‐Market Equilibria Solved Recursively on an Event Tree

Because of non‐traded human capital, real‐world financial markets are massively incomplete, while the modeling of imperfect, dynamic financial markets remains a wide‐open and difficult field. Some 30 years after Cox, Ross, and Rubinstein (1979) taught us how to calculate the prices of derivative securities on an event tree by simple backward induction, we show how a similar formulation can be used in computing heterogeneous‐agents incomplete‐market equilibrium prices of primitive securities. Extant methods work forward and backward, requiring a guess of the way investors forecast the future. In our method, the future is part of the current solution of each backward time step.     

Portfolio Selection and the Investment Performance of the UK Pension Funds*

Pension funds are the main institutional investors, accounting for 38 per cent of personal sector net financial wealth. As a result of their growing importance in mobilizing personal sector saving, they have emerged as the principal institutional investor, controlling over £200bn of funds at the end of 1987, their total net assets equalling 38 per cent of personal sector net financial wealth. Pension funds also dominate domestic asset markets, owning 27per cent of the stock of outstanding UK equity, 23 per cent of UK government securities and 17 per cent of total UK holdings of overseas equity. In this paper we present the conclusions from recent research, undertaken as part of an updating of the LBS Financial Model. Our results suggest that UK pension fund investment since 1980 is better than previous studies have suggested and, in particular, that funds outperformed the equity market in the 1980s, offering a higher return for any given level of risk. In addition fund behaviour is slow to change, with past behaviour exerting the strongest influence on current investment patterns. Fund managers also appear guilty of “short termism” in that they place little weight on events beyond the next three months. However, this has not made them inefficient. Finally, we find that actions to restrict the funds' surpluses should not affect their investment behaviour. Our results also suggest that the costs from exchange controls in the 1970s were substantial, amounting to some £4bn per year.