This paper analyzes the effects of tying arrangements on market competition and social welfare in two-sided markets when economic agents can engage in multi-homing; that is, they can participate in multiple platforms in order to reap maximal network benefits. The model shows that tying induces...

Platforms often use fee discrimination within their marketplace (e.g., Amazon, eBay, and Uber specify a variety of merchant fees). To better understand the impact of marketplace fee discrimination, we develop a model that allows us to determine equilibrium fee and category decisions that depend...

We collect data from Hong Kong’s foremost news media outlets’ Facebook pages from 2019 to 2020 to examine clashes of opinion on the social media platform. We find that specific writing habits signify users’ backgrounds and elicit group segregation cues from readers. An increase in...

We study an e-commerce platform’s incentives to delist IP-infringing products and the effects of introducing a liability regime that induces the platform to increase its screening intensity. We identify conditions under which platform liability is socially desirable (respectively, undesirable)...

We analyze algorithmic pricing on Bol.com, the largest online marketplace in the Netherlands and Belgium. Based on more than two months of pricing data for around 2,800 popular products, we find that algorithmic sellers can both increase and reduce the price of the Buy Box (the most prominently...

This project evaluates the optimal transport network in North America by first analyzing the proposed $25 billion merger between the Canadian Pacific Railway and the Kansas City Southern Railway. Then this project studies different sequences of mergers and find the optimal path of mergers to...

Marketers often utilize social media influencers to reach audiences with more authentic and credible messaging. While some influencers are prudent and carefully test products before promoting them, many others are shallow and merely post the marketer messaging as is. We analyze the impact of...

This empirical research investigates the impact of an aggressive growth strategy used by delivery platforms to add restaurants to their platforms without restaurants' consent. Although these platforms provide a valuable option to consumers to access restaurant services, they experience strong...

Following up on our initial comments at the Tunney Act proceeding of the proposed merger between Sprint and T-Mobile, we discuss DOJ's criticisms of these comments, explaining why these criticisms are baseless. Moreover, using evidence from the NY v. Deutsche Telecom trial, we provide new...