Bank Interest Rate Risk Management


Management Science

A paraître

Départements : Finance, GREGHEC (CNRS)

Mots clés : Interest rate risk; Derivatives; Bank capital structure; Hedging

Empirically, bank equity value is decreasing in the interest rate. Yet (i) manybanks do not hedge interest rate risk and (ii) above 50% of hedging banks usederivatives to increase exposure. I model a bank’s capital structure, and showthat these facts are consistent with optimal hedging under financial frictions.Novel predictions on the characteristics of banks taking long or short interest ratederivative positions are tested, and supported by the data. Therefore, banks’derivatives exposures are not necessarily evidence of excessive risk-taking, andcan be explained by hedging in the presence of frictions. More broadly, theresults challenge the view that “hedging” and “speculative” positions can beidentified using the comovement between derivatives payoffs and equity value