A string of theoretical papers shows that the non-exclusivity of credit contracts generates important negative contractual externalities. Employing a unique dataset, we identify how these externalities affect the supply of credit. Using internal information on a creditor's willingness to lend,...

We study how a bank's willingness to lend to a previously exclusive firm changes once the firm obtains a loan from another bank (“outside loan”) and breaks an exclusive relationship. Using a difference-in-difference analysis and a setting where outside loans are observable, we document that...