NBER Publications by Ning Zhu

This paper examines how filing for bankruptcy under Chapter 13 helps financially distressed debtors save their homes. We develop a model of debtors’ decisions to default on their mortgages and file for bankruptcy under Chapter 13 and evaluate the model using new data on Chapter 13 bankruptcy filers. We also examine the effect of allowing bankruptcy judges to reduce debtors’ mortgage payments, i.e., introducing “cram-down” of mortgages in Chapter 13.

We find that 96% of Chapter 13 filers are homeowners and 79% of filers repay mortgage debt in their repayment plans; while just 9% of filers repay only unsecured debt in their plans. These results suggest that filers use Chapter 13 almost exclusively as a “save-your-home” procedure. But under current law, only about 1% Chapter 13...

Saunders (1993) and Hirshleifer and Shumway (2001) document the effect of weather on stock returns. The proposed explanation in both papers is that investor mood affects cognitive processes and trading decisions. In this paper, we use a database of individual investor accounts to examine the weather effects on traders. Our analysis of the trading activity in five major U.S. cities over a six-year period finds vistually no difference in individuals propensity to buy or sell equities on cloudy days as opposed to sunny days. If the association between cloud cover and stock returns documented for New York and other world cities is indeed caused by investor mood swings, our findings suggest that researchers should focus on the attitudes of market-makers, news providers or other agents physicall...

We analyze cross-sectional and time series information from forty-seven equity markets around the world, to consider whether short-sales restrictions affect the efficiency of the market, and the distributional characteristics of returns to individual stocks and market indices. Using the approach developed in Morck et.al. (2000) we find significantly more cross-sectional variation in equity returns in markets where short selling is feasible and practiced, controlling for a host of other factors. This evidence is consistent with more efficient price discovery at the individual security level. A common conjecture by regulators is that short-selling restrictions can reduce the relative severity of a market panic. We test this conjecture by examining the skewness of market returns. We find that...