Three essays on corporate debt, capital structure and managerial entrenchment.

摘要

This dissertation comprises three essays. In the first essay, I develop a contingent-claims model to investigate the impact of managerial entrenchment on corporate policies and security valuation. The model emphasizes the role that managerial agency issues play in determining both a firm's dividend payout and capital structure. I show quantitatively that self-interested managers' leverage choices deviate from those ex ante maximize firm values. The results suggest that dividend yields are negatively affected by both leverage ratios and managerial entrenchment. They provide implications for empirical research attempting to relate dividend policy to capital structure. In addition, the model offers a new framework to measure managerial entrenchment using observed leverage and dividend payout.;In the second essay, we use a set of structural models to evaluate the price of default protection for a sample of US corporations. In contrast to previous evidence from corporate bond data, CDS premia are not systematically underestimated. In fact, one of our studied models has little difficulty on average in predicting their level. For robustness, we perform the same exercise for bond spreads by the same issuers on the same trading date. As expected, bond spreads relative to the Treasury curve are systematically underestimated, consistent with their being driven by significant non-default components. This is not the case when the swap curve is used as a benchmark, suggesting that previously documented underestimation results may be sensitive to the choice of risk free rate.;In the third essay, we develop a valuation model that simultaneously captures credit risk and interest rate risk, and apply it to study the valuation of putable corporate bonds. We ask what risks put features provide insurance against in practice - credit risk, liquidity risk or interest rate risk - and to what degree? We find that they reduce the components of all three risks in bond spreads. The most important, perhaps surprisingly is default or spread risk, followed by term structure risk. The reduction in the liquidity component is present but rather small.