NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

NBER Working Papers by Denis Nekipelov

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Working Papers

February 2013A Dynamic Model of Subprime Mortgage Default: Estimation and Policy Implications
with Patrick Bajari, Chenghuan Sean Chu, Minjung Park: w18850
The increase in defaults in the subprime mortgage market is widely held to be one of the causes behind the recent financial turmoil. Key issues of policy concern include quantifying the role of various factors, such as home price declines and loosened underwriting standards, in the recent increase in subprime defaults and predicting the effects of various policy instruments designed to mitigate default. To address these questions, we estimate a dynamic structural model of subprime borrowers' default behavior. We prove that borrowers' time preference is identified in our model and propose an easily implementable semiparametric plug-in estimator. Our results show that principal writedowns have a significant effect on borrowers' default behavior and welfare: a uniform 10% reduction in outstan...
February 2006Estimating Static Models of Strategic Interaction
with Patrick Bajari, Han Hong, John Krainer: w12013
We propose a method for estimating static games of incomplete information. A static game is a generalization of a discrete choice model, such as a multinomial logit or probit, which allows the actions of a group of agents to be interdependent. Unlike most earlier work, the method we propose is semiparametric and does not require the covariates to lie in a discrete set. While the estimator we propose is quite flexible, we demonstrate that in most cases it can be easily implemented using standard statistical packages such as STATA. We also propose an algorithm for simulating the model which finds all equilibria to the game. As an application of our estimator, we study recommendations for high technology stocks between 1998-2003. We find that strategic motives, typically ignored in the empiri...

Published: Estimating Static Models of Strategic Interactions (with Han Hong, John Krainer and Denis Nekipelov), Journal of Business and Economic Statistics Oct 2010, Vol. 28, No. 4, 469-482 citation courtesy of

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