Costis Skiadas is the Harold L. Stuart Professor of Finance at the Kellogg School of Management and current chair of the Finance department (a role he also served in during 2007-10). He has previously served as a member of Northwestern University's faculty senate. Skiadas has made contributions on foundational issues of choice under uncertainty, asset-pricing theory, dynamic portfolio theory, and trade under asymmetric information. His work has appeared in economics, finance, and mathematics journals, and he is the author of the book Asset Pricing Theory. He received his PhD in Operations Research from Stanford University.