Ramabhadran S. Thirumalai is an Associate Professor of Finance (Practice) at the Indian School of Business (ISB). He is currently working on the impact of various regulatory changes on securities market pricing, efficiency, and liquidity. His research interests also include the trading behaviour of various types of market participants, with a particular focus on proprietary trading.

He teaches courses on Derivatives and Security Markets in the PGP programme, as well as, introductory finance courses in several programmes at ISB.