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Ralph Koijen

Ralph Koijen

Joined Stern 2016

Leonard N. Stern School of Business


Personal website


Ralph S.J. Koijen joined New York University Stern School of Business as a Professor of Finance in September 2016.

Professor Koijen’s research focuses on financial economics and insurance. His recent work studies the risk and regulation in the insurance industry as well as the implications of institutional demand for asset prices. He has published in various economics and finance journals, including the American Economic Review , Econometrica, the Journal of Monetary Economics, the Journal of Finance, the Journal of Financial Economics and the Review of Financial Studies.

Before joining NYU Stern, Professor Koijen was a Professor of Finance at the London Business School and an Assistant and Associate Professor of Finance at the University of Chicago Booth Business School.

He received his undergraduate degree in Econometrics from Tilburg University and his Ph.D. in Finance from Tilburg University.

Research Interests

  • Insurance
  • Institutional investors
  • Asset pricing

Academic Background

Ph.D., Finance
Tilburg University

M.S., Econometrics
Tilburg University