We present a methodology for analyzing the impact of algorithmic recommendations on product market competition, addressing concerns that have been raised in both academic and policy circles regarding their potential anti-competitive effects. Our analysis demonstrates that recommender systems...

We develop a structural econometric model to elicit household-specific expectations about future financial asset returns and risk attitudes by using data on observed portfolio holdings and self-assessed willingness to bear financial risk. Our framework assumes that household portfolios are...

We investigate households' portfolio choice using a microeconometric approach derived from mean-variance optimization. We assume that households have heterogeneous expectations on the distribution of excess returns and that they can't take short positions in the risky assets. Assuming two such...

We investigate households' portfolio choice using a microeconometric approach derived from mean-variance optimization. We assume that households have heterogeneous expectations on the distribution of excess returns and that they cannot take short positions in risky assets. Assuming two such...