[We study the interaction between financing and investment decisions in a dynamic model, where the firm has multiple debt issues and equityholders choose the timing of investment. Jointly optimal capital and priority structures can virtually eliminate investment distortions because debt priority serves as a dynamically optimal contract. Examining the relative efficiency of priority rules observed in practice, we develop several predictions about how firms adjust their priority structure in response to changes in leverage, credit conditions, and firm fundamentals. Notably, financially unconstrained firms with few growth opportunities prefer senior debt, while financially constrained firms, with or without growth opportunities, prefer junior debt. Moreover, lower-rated firms are predicted to spread priority across debt classes. Finally, our analysis has a number of important implications for empirical capital structure research, including the relations between market leverage, book leverage, and credit spreads and Tobin's Q, the influence of firm fundamentals on the agency cost of debt, and the conservative debt policy puzzle.]

Investment-based asset pricing research highlights the role of irreversibility as a determinant of firms’ risk and expected return. In a neoclassical model of a firm with costly scale adjustment options, we show that the effect of scale flexibility (i. e., contraction and expansion options) is to determine the relation between risk and operating leverage: risk increases with operating leverage for inflexible firms, but decreases for flexible firms. Guided by theory, we construct easily reproducible proxies for inflexibility and operating leverage. Empirical tests provide support for the predicted interaction of these characteristics in stock returns and risk.

We study distress risk premia around a bankruptcy reform that shifts bargaining power in financial distress from debtholders to shareholders. We find that the reform reduces risk factor loadings and returns of distressed stocks. The reform effect is stronger for firms with lower firm-level shareholder bargaining power. An increase in credit spreads of riskier relative to safer firms, in particular for firms with lower firm-level shareholder bargaining power, confirms a shift in bargaining power from bondholders to shareholders. Out-of-sample tests reveal that a reversal of the reform's effect leads to a reversal of factor loadings and returns.

[We examine the optimal mixture and priority structure of bank and market debt using a trade-off model in which banks have the unique ability to renegotiate outside formal bankruptcy. Flexible bank debt offers a superior trade-off between tax shields and bankruptcy costs. Ease of renegotiation limits bank debt capacity, however. Optimal debt structure hinges upon which party has bargaining power in private workouts. Weak firms have high bank debt capacity and utilize bank debt exclusively. Strong firms lever up to their (lower) bank debt capacity, augment with market debt, and place the bank senior. Therefore, the trade-off theory offers an explanation for: (i) why young/small firms use bank debt exclusively; (ii) why large/mature firms employ mixed debt financing; and (iii) why bank debt is senior. The trade-off theory also generates predictions consistent with international evidence. In countries in which the bankruptcy regime entails soft (tough) enforcement of contractual priority, bank debt capacity is low (high), implying greater (less) reliance on market debt.]

Investment-based asset pricing research highlights the role of irreversibility as a determinant of firms' risk and expected return. In a neoclassical model of a firm with costly scale adjustment options, we show that the effect of scale flexibility (i.e., contraction and expansion options) is to determine the relation between risk and operating leverage: risk increases with operating leverage for inflexible firms, but decreases for flexible firms. Guided by theory, we construct easily reproducible proxies for inflexibility and operating leverage. Empirical tests provide support for the predicted interaction of these characteristics in stock returns and risk.

We study distress risk premia around a bankruptcy reform that shifts bargaining power in financial distress from debtholders to shareholders. We find that the reform reduces risk factor loadings and returns of distressed stocks. The reform effect is stronger for firms with lower firm-level shareholder bargaining power. An increase in credit spreads of riskier relative to safer firms, in particular for firms with lower firm-level shareholder bargaining power, confirms a shift in bargaining power from bondholders to shareholders. Out-of-sample tests reveal that a reversal of the reform's effect leads to a reversal of factor loadings and returns.

We study the interaction between financing and investment decisions in a dynamic model, where the firm has multiple debt issues and equityholders choose the timing of investment. Jointly optimal capital and priority structures can virtually eliminate investment distortions because debt priority serves as a dynamically optimal contract. Examining the relative efficiency of priority rules observed in practice, we develop several predictions about how firms adjust their priority structure in response to changes in leverage, credit conditions, and firm fundamentals. Notably, financially unconstrained firms with few growth opportunities prefer senior debt, while financially constrained firms, with or without growth opportunities, prefer junior debt. Moreover, lower-rated firms are predicted to spread priority across debt classes. Finally, our analysis has a number of important implications for empirical capital structure research, including the relations between market leverage, book leverage, and credit spreads and Tobin's Q, the influence of firm fundamentals on the agency cost of debt, and the conservative debt policy puzzle.

We examine the optimal mixture and priority structure of bank and market debt using a trade-off model in which banks have the unique ability to renegotiate outside formal bankruptcy. Flexible bank debt offers a superior trade-off between tax shields and bankruptcy costs. Ease of renegotiation limits bank debt capacity, however. Optimal debt structure hinges upon which party has bargaining power in private workouts. Weak firms have high bank debt capacity and utilize bank debt exclusively. Strong firms lever up to their (lower) bank debt capacity, augment with market debt, and place the bank senior. Therefore, the trade-off theory offers an explanation for: (i) why young/small firms use bank debt exclusively; (ii) why large/mature firms employ mixed debt financing; and (iii) why bank debt is senior. The trade-off theory also generates predictions consistent with international evidence. In countries in which the bankruptcy regime entails soft (tough) enforcement of contractual priority, bank debt capacity is low (high), implying greater (less) reliance on market debt.