Working Papers 

• Nonparametric Estimation of Sponsored Search Auctions and Impacts of Ad Quality on Search Revenue  (with Dongwoo Kim,  R&R at Management Science)

• Curbing Price Fluctuations in Cap-and-Trade Auctions(with  Thomas D. Jeitschko & Soo Jin Kim, R&R at Energy Economics)  

• Quality Differentiation and Optimal Pricing Strategy in Multi-sided Markets  (with Soo Jin Kim, R&R at Quarterly Review of Economics and Finance)

Work in Progress  

• Estimation of Bidder's Latent Value in Sequential English Auctions with Uncertainty in Future Supply, (with Kyoo il Kim,  Dongwoo Kim, and Haoyang Li)

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.  

• Bundling Demand in K-12 Broadband Procurement, (with Gaurab Aryal, Charles Murry, and Arnab Palit).
  We evaluate the effects of bundling demand for broadband internet by K-12 schools. In 2014, New Jersey switched from decentralized procurements to a new procurement system that bundled schools into four regional groups. Using an event study approach, we find that, on average, prices for participants decreased by one-third, and broadband speed purchased increased sixfold. We bound the change in school expenditures due to the program and found that participants saved at least as much as their total ``E-rate" subsidy from the federal government. Under weak assumptions on demand, we show that participating schools experienced large welfare gains.

• Impact of UberEats' Acquisition of Postmates on Consumer Welfare. (with Shaoyin Du)

• Revenue-Maximizing number of auto-bidders in the presence of display externality

• Differential Impact of Ad Auction Design Across Platforms, (with Anjana Sursarla)