This post comes to us from Adriano Rampini of the Finance Department at Duke University, and S. Viswanathan, Professor of Finance at Duke University.
In our paper, Collateral, Risk Management, and the Distribution of Debt Capacity, which is forthcoming in the Journal of Finance, we provide a dynamic model of collateralized financing in which collateral constraints are endogenously derived based on limited enforcement. In the model, firms have access to complete markets, subject to collateral constraints, and thus are able to engage in risk management. We show that there is an important connection between firm financing and risk management since both involve promises to pay by the firm, which are limited by collateral.
Our model predicts that firms with low net worth exhaust their debt capacity and hedge less, since financing needs override hedging concerns, consistent with the empirical evidence. In contrast, this evidence is considered a puzzle from the vantage point of the standard theory of risk management, which takes investment as given. Rampini and Viswanathan (2009) study an infinite horizon model and show that the same trade-off between financing and risk management obtains generally.