In matching markets, the existence of stable matchings can only be guaranteed under substantive restrictions on preferences. We investigate how these results change in large markets, which we model with a continuum of agents of each type, following the work of Aumann (1964) on general...

We consider securities markets in which economic interests in firms and shareholder voting rights are traded independently; such markets allow for "empty voters" who hold voting rights in a firm that exceed their economic interests. We demonstrate that, in such settings, competitive equilibria...

This appendix to "Stability, Strategy-Proofness, and Cumulative Offer Mechanisms" (available at 'https://ssrn.com/abstract=3120463' https://ssrn.com/abstract=3120463) contains a proof of the sufficiency result (Theorem 4) in Section 3 and all proofs for Section 4

We investigate the competitive effects of spot-price contracting, in which a buyer and seller contract to transact at a future date at the price prevailing in that market at that future date (the ``spot price''); such contracts are ubiquitous in the beef-processing industry, among others. We...

It is a core principle of antitrust law and theory that reduced market concentration lowers the risk of anticompetitive behavior. We demonstrate that this principle is fundamentally incomplete.Traditional models assume that firms interact only as competitors. We examine and model...

We consider the many-to-many two-sided matching problem under a stringent domain restriction on preferences called the max-min criterion. We show that, even under this restriction, there is no stable mechanism that is weakly Pareto efficient, strategy-proof, or monotonic (i.e. respects...

Recent years have seen an explosion of scholarship on “personalized law.” Commentators foresee a world in which regulators armed with big data and machine learning techniques determine the optimal legal rule for every regulated party, then instantaneously disseminate their decisions via...

Drawing on classical insights from mechanism design, we show that ex post efficient mechanisms induce agents to make efficient ex ante investment choices if and only if they are strategy-proof. For mechanisms that fail to be exactly strategy-proof and/or efficient, we derive a correspondence...

Firms often find it valuable to lock in repeat consumers, and they often do so via loyalty programs such as frequent-flyer miles or discounts for returning consumers. We introduce a model of loyalty programs in the presence of competition and show that, surprisingly, such programs result in...

The Coase Theorem predicts that, if there are no transaction costs, parties will always contract their way to an efficient outcome. Thus, no matter which legal rules society chooses, "Coasean bargains" will lead to efficient results. There are always some transaction costs. However, transaction...