Using a dynamic model of strategic bargaining between equity and debt holders following default, we analyze the impact of shareholder bargaining power and debt overhang on optimal investment and strategic default. Our empirical tests utilize a new measure of the debt overhang wedge based on default probabilities generated from a hazard model for bankruptcy. Consistent with the theoretical predictions, bondholder (shareholder) ownership concentration ceteris paribus enhances (weakens) the overhang wedge and dampens (increases) capital investment. We identify novel ownership-structure-related factors in firm-level capital investment and document how post-default shareholder bargaining power alleviates the underinvestment problem caused by debt overhang. Received March 26, 2018; editorial decision June 20, 2018 by Editor: Paolo Fulghieri.

We examine the joint optimization of financial leverage and irreversible capacity investment in a real options framework with risky debt and endogenous interest costs. Higher capacity, ceteris paribus, increases operating leverage and default probability, but lowers ex post adjustment costs and generates larger tax shields. A key insight is that financial leverage and capacity are substitutes in the debt market equilibrium. We develop novel predictions about the effects of capital adjustment costs, operating costs, and uncertainty on optimal financial leverage and capacity that may potentially help explain ambiguous empirical results in the literature regarding the determinants of capital structure and investment. Received March 17, 2016; editorial decision July 8, 2017 by Editor Itay Goldstein.