This paper analyses the links between advances in financial technology, investors’ sophistication, and the composition and returns of their financial portfolios. We develop a simple portfolio choice model under asymmetric information and derive some theoretical predictions. Using detailed...

This paper explores the impact of risky asset holdings by U.S. nonfinancial firms. From the early 1990s to 2017, the share of risky securities surged from 28% to over 40% of firms' financial assets. Using a business-cycle heterogeneous firms model, I show that declining real interest rates since...