Stefan Weiergraeber

Stefan Weiergraeber
Senior Economist

Stefan is a Senior Economist in the Seattle office. He is passionate about combining economic modeling with econometric data analysis and machine learning to solve challenging business and policy problems. He holds a PhD in Economics from the University of Mannheim, Germany.

Prior to joining Keystone, Stefan was a faculty member at Indiana University Bloomington, where he specialized in empirical industrial organization and applied econometrics. His research has been published in leading economics journals and covers a broad range of topics, most notably, the effects of consumer switching costs and network effects on firms’ market power, the effects of mergers on industry conduct, and the optimal design of procurement auctions.

Moreover, Stefan has taught numerous courses in Econometrics, Machine Learning, and Data Science.


  • Ph.D in Economics from University of Mannheim