We introduce and analyze a new market design for trading financial assets. The design allows traders to directly trade any user-defined linear combination of assets. Orders for such portfolios are expressed as downward-sloping piecewise-linear demand curves with quantities as flows...

Protecting species' habitats is the main policy tool employed across the globe to reduce biodiversity losses. These protections are hypothesized to conflict with private landowners' interests. We study the economic consequences of the most extensive and controversial piece of such environmental...

Open access, competitive exploitation can be incredibly damaging to valuable resources and the human populations that depend upon them. Even though wealth, resource rents and stocks are at stake, open access often seems to be ineffectively addressed across time and space. Institutions vary....

Input subsidies in natural resource sectors are widely believed to cause depletion of the natural capital on which those sectors rely. But identification and data challenges have stymied attempts to empirically estimate the causal effect of subsidies on resource extraction. China's fishing fleet...

This paper embeds a circular Hotelling model of spatial competition into a new-Keynesian model with staggered price setting. The resulting framework provides microfoundations for a cost-push shock, taking the form of random variations in transportation costs. An increase in transportation costs...

The integration of algorithmic trading with reinforcement learning, termed AI-powered trading, is transforming financial markets. Alongside the benefits, it raises concerns for collusion. This study first develops a model to explore the possibility of collusion among informed speculators in a...

We examine a model in which one firm uses a pricing algorithm that enables faster pricing and multi-period commitment. We characterize a coercive equilibrium in which the algorithmic firm maximizes its profits subject to the incentive compatibility constraint of its rival. By adopting an...

Platforms, retailers, and other firms often offer their own products alongside products sold by competitors. We study the effects of this practice by combining a field experiment that hides brands owned by Amazon (i.e., private labels) from shoppers on Amazon.com with model-based counterfactuals...

A common approach to markets with adverse selection is to regulate competition to minimize inefficiencies, while preserving consumer choice among firms. We study the role of procurement auctions--leading to sole provision by the winning firm--as an alternative market design. Relative to...

Recent policy proposals seek to regulate out-of-network hospital prices. We study how such regulation affects equilibrium prices, network formation, and hospital exit. We estimate a structural model of insurer-hospital bargaining that allows for out-of-network transactions between...