We consider the problem of allocating multiple units of an indivisible object among agents and collecting payments. Each agent can receive multiple units of the object, and his (consumption) bundle is a pair of the units he receives and his payment. An agent's preference over bundles may be...

In a security-bid auction, the stochastic revenue of the project being auctioned is used as an asset to securitize the winner's payment to the seller. De Marzo et al. (2005) show that in an environment with risk-neutral seller and bidders, steeper securities increase the seller's expected...

This paper identifies a condition for an efficient social choice rule to be fully implementable when we take into account investment efficiency. To do so, we extend the standard implementation problem to include endogenous ex ante and ex post investments. In our problem, the social planner aims...

In matching problems with minimum and maximum type-specific quotas, there may not exist a stable (i.e., fair and non-wasteful) assignment (Ehlers et al., 2014). This paper investigates the structure of schools' priority rankings which guarantees stability. First, we show that there always exists...

This note shows that the first-price auction fully implements efficient investments when agents make not only ex ante but also ex post investments. The essential assumptions of our model are that (i) each agent can invest before and after participating in the auction under the same cost function...

Deferred Acceptance (DA), a widely implemented algorithm, is meant to improve allocations: under classical preferences, it induces preference-concordant rankings. However, recent evidence shows that—in both real, large-stakes applications and experiments—participants frequently play...

I study costly information acquisition in a two-sided matching problem, such as matching applicants to schools. Applicant's utility is a sum of common and idiosyncratic components. The idiosyncratic component is unknown to applicants but can be learned at a cost. When applicants are assigned...

This paper shows that the deferred acceptance mechanism (DA) cannot be improved upon in terms of manipulability in the sense of either Pathak and Sönmez (2013) or Arribillaga and Massó (2015) without compromising with stability. A conflict between manipulability and fairness is also...

This article develops an agent-based model of security market pricing process, capable to capture main stylised facts. It features collective market pricing mechanisms based upon evolving heterogeneous expectations that incorporate signals of security issuer fundamental performance over time....

Can mechanism design save democracy? We propose a simple design that offers a chance: individuals pay for as many votes as they wish using a number of "voice credits" quadratic in the votes they buy. Only quadratic cost induces marginal costs linear in votes purchased and thus welfare optimality...