Abstract: | Abstract: This study examines the relation between bank relations and market performance in Thailand, an economy in which commercial banks play a crucial role through lending relationship and, for a number of companies, equity ownership. Overall, bank relationships, both equity‐based and debt‐based, positively affect capital investment. However, there is a negative relation between lending relationships, both short‐term and long‐term, and market performance indicating that bank lending may not always be consistent with value maximization. There is also evidence of a positive marginal effect of bank monitoring through equity ownership on market performance. Further, the relation between bank equity ownership and market performance appears to be non‐linear with a concave function. Ownership by corporate insiders is also negatively related to bank equity ownership. Overall, the findings highlight the detrimental effects of excessive short‐term debt usage, one of the factors believed to contribute to the financial crisis in Thailand, and the marginal benefit of the equity‐based relationship on firm value. |