We illustrate conditions under which a trade platform selling its own products alongside third-party sellers benefits or harms consumers. This benefits consumers by lowering prices in a suite of models: a gatekeeper platform facing a competitive fringe of sellers, when fringe sellers also have...

We analyze firms' entry, production and hedging decisions under imperfect competition. We consider an oligopoly industry producing a homogeneous output in which risk-averse firms face an entry cost upon entering the industry, and then compete in Cournot with one another. Each firm faces...

Markets for many commodities are characterized by imperfectly competitive production as well as substantial storage by speculators who are attracted by significant price volatility. We examine how speculative storage affects the behavior of an oligopoly producing a commodity for which demand is...

We examine the incentives of a monopolistic search engine, funded by advertising, to provide reliable search results. We distinguish two types of search results: sponsored and organic (not-paid-for). Organic results are most important in searches for online content, while sponsored results are...

This paper examines the effect of price matching guarantees (PMGs) on market outcomes in a sequential search model. PMGs are simultaneously chosen with prices and some consumers (shoppers) know the firms’ decisions before buying, while others (non-shoppers) enter a shop before observing the...

We investigate the R&D portfolio choices of multiproduct firms. When a firm increases cost-reducing R&D investment in a given product, its rivals will modify their entire R&D portfolios by reducing R&D investments in that particular product and increasing R&D investments in other competing...

This paper examines retail competition in a liberalized gas market. Vertically integrated firms run both wholesale activities (buying gas from the producers under take-or-pay obligations) and retail activities (selling gas to final customers). The market is decentralized and the firms decide...