Professor Kirby's research interests include asset pricing, empirical finance, and financial econometrics, with a particular emphasis on understanding the implications of time-varying reward and risk characteristics in financial markets. His research articles have appeared in a wide range of academic journals including the Journal of Finance, Journal of Financial Economics, and Review of Financial Studies. Much of his recent work focuses on modeling time-series changes in volatility with applications to asset pricing, derivatives valuation, portfolio selection, and risk management. His current research seeks to address several long-standing issues in portfolio optimization