R E S E A R C H

Working Papers 

This paper investigates the impact of acquisition between two large online food delivery platforms UberEats and Postmates on consumer's food choice behaviors. Using a novel dataset that records consumers' online food ordering on all four food delivery platforms, we are able to study the impact of the acquisition on consumers' purchasing behaviors on the two acquisition-involved platforms as well as their behaviors on the competitor's platforms.

This paper proposes a new method to identify and estimate the bidder's latent value in sequential English auctions, with an independent private value paradigm. We show that partial identification of latent value distribution is possible with minimal assumption, specifically by assuming (i) bidders do not bid more than they are willing to pay and (ii) the bidder stops bidding if the opportunity cost is higher than the profit from winning in the current period. We further show how the method can be applied in previously unexplored auction market conditions such as the case of uncertainty about the number of auctions held in the future.  



Work in Progress