Xijie Gao

Xijie Gao’s research explores how digital technologies are transforming modern economies, with a focus on the implications for market structure, consumer welfare, and aggregate productivity. His work bridges the fields of industrial organization, macroeconomics, and the digital economy, combining structural modeling with large-scale microdata from leading digital platforms.

His recent work quantifies the welfare effects of product variety expansion on e-commerce platforms, showing substantial gains—particularly among underserved consumers. He also examines how advances in digital marketing reshape firm strategies, and influence macroeconomic outcomes and consumer welfare.