RFS Advance Access originally published online on July 6, 2006
Review of Financial Studies 2007 20(3):557-595; doi:10.1093/rfs/hhl022
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Spin-offs, Divestitures, and Conglomerate Investment
Wichita State University
University of Wisconsin
Address correspondence to Toni M. Whited, Department of Finance, University of Wisconsin, 975 University Avenue, Madison, WI 53706-1323, or e-mail: twhited{at}bus.wisc.edu.
We examine whether spin-offs or divestitures cause improvements in conglomerate investment efficiency. At issue are endogeneity of these restructuring decisions and correct measurement of investment efficiency. Endogeneity is a problem because the factors that induce firms to spin off or divest divisions may also improve investment efficiency; measurement error is a problem because efficiency measures employ Tobins q as a noisy proxy for investment opportunities. We find important differences between firms that divest or spin off and a control sample. After accounting for these differences and for measurement error in q, we find no evidence of improvements in investment efficiency. (JEL G31, G34)