"We argue that a firm's aggregate risk is a key determinant of whether it manages its future liquidity needs through cash reserves or bank lines of credit. Banks create liquidity for firms by pooling their idiosyncratic risks. As a result, firms with high aggregate risk find it costly to get...

Purchase obligations are forward contracts with suppliers and are used more broadly than traded commodity derivatives. This paper is the first to document that these contracts are a risk management tool and have a material impact on corporate hedging activity. Firms that expand their risk...