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Testing Theories of Capital Structure and Estimating the Speed of Adjustment

Published online by Cambridge University Press:  01 April 2009

Rongbing Huang
Affiliation:
Coles School of Business, Kennesaw State University, 1000 Chastain Road NW, Kennesaw, GA 30144. rhuang1@kennesaw.edu
Jay R. Ritter
Affiliation:
Warrington College of Business Administration, University of Florida, PO Box 117168, Gainesville, FL 32611. jay.ritter@cba.ufl.edu

Abstract

This paper examines time-series patterns of external financing decisions and shows that publicly traded U.S. firms fund a much larger proportion of their financing deficit with external equity when the cost of equity capital is low. The historical values of the cost of equity capital have long-lasting effects on firms’ capital structures through their influence on firms’ historical financing decisions. We also introduce a new econometric technique to deal with biases in estimates of the speed of adjustment toward target leverage. We find that firms adjust toward target leverage at a moderate speed, with a half-life of 3.7 years for book leverage, even after controlling for the traditional determinants of capital structure and firm fixed effects.

Information

Type
Research Articles
Copyright
Copyright © Michael G. Foster School of Business, University of Washington 2009

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