I provide evidence that fund managers who overweight firms with the most differentiated products ('monopolies') exhibit a superior risk-adjusted performance. This is consistent with information advantages due to a better understanding of qualitative information on a firm's competitive...

Processing qualitative information about a firm's product market competition matters for fund performance. I find that fund managers with a better understanding of a firm's market power exhibit a superior risk-adjusted performance. Managers who overweight companies with the fewest competitors...

Processing qualitative information about a firm's product market competition matters for professional investors. Consistent with a superior understanding of a firm's market power, fund managers who overweight companies with the fewest competitors (monopolies) outperform their peers. An exogenous...

Taking a firm’s competitive position into account benefits investors who are better at evaluating this qualitative information. I find that fund managers who overweight companies withmarket power outperform their peers. Placebo exercises and an exogenous shock to productmarket competition...

Taking a firm's competitive position into account benefits investors who are better at evaluating this qualitative information. I find that fund managers who overweight companies with market power outperform their peers. Placebo exercises and an exogenous shock to product market competition...

Developing a database that includes 59 countries, our study sheds light on the role of mobile telecommunications markets' concentration on countries' competitiveness.Performing several estimations and using an instrumental variable that aims to explain the degree of concentration in mobile phone...

We investigate the effect of competition in the nursing homes sector with a two-sided market approach. More precisely, we investigate the distributional implications across the three key actors involved (residents, nurses and nursing homes) that arise from the two-sidedness of the market. Within...

This paper studies the design of health insurance with ex post moral hazard, when there is imperfect competition in the market for the medical product. Various scenarios, such as monopoly pricing, price negotiation or horizontal differentiation are considered. The insurance contract specifies...

We introduce new risk groups to a standard capitation formula and evaluate risk selection incentives of insurers. The study uses a unique data set of almost 24 million affiliates to Government's mandatory health insurance system. This data set is very rich in the sense of reporting all claims...

This paper examines the evolution of drug use in Colombia over the past years. Our analysis, based on surveys from the Dirección Nacional de Estupefacientes, shows that drug consumption grew substantially between 1996 and 2013. The growth occurred for both genders, all ages, socioeconomic...