How does systemic risk arise? Where do fluctuations in aggregate economic activity originate? My research sits at the intersection of macroeconomics and finance, and seeks answers to these questions. I study co-movement in firm-level economic activity, and how co-movement at the firm level shapes systemic risk and aggregate fluctuations. My other research interests include technology adoption and abandonment, and bank-based versus market-based financial systems. I'm American, speak fluent German, and live with my British wife Nina in Seattle. Our cats are British too, their names are Teddy and Roo. I'll be available for interviews at the 2019 ASSA Annual Meeting in Atlanta.