Three Essays on Multi-Round Procurement Auctions

Abstract

My dissertation contributes to auction studies. It analyzes the bidding behavior in multi-round auctions. It is motivated by an interesting multi-round feature observed in the procurement auctions held by the Indiana Department of Transportation (INDOT hereafter), which adopts secret reserve prices. Prior research has indicated that auctions with reserve prices usually lead to no trade. However, prior research has not paid much attention to the possibility that the seller can auction unsold objects from previous rounds and a trade is therefore still likely to occur. My dissertation provides new theoretical and empirical analyses of auctions with multiple rounds. It first develops a game-theoretic bidding model for the multi-round auctions with non-forward looking bidders. It then establishes a structural econometric model in order to conduct a structural analysis of the INDOT data. Lastly it introduces dynamic features into the model by assuming that bidders are forward looking and uses a dynamic control approach to analyze the bidding behavior and policy issues. The main findings are: (1) rational bidders reduce their markup across periods in multi-round auctions; (2) simulations show that using secret reserve price is sometimes better than public reserve price for the procurement auctioneer; (3) counterfactual analyses indicate that on one hand, when bidders are not forward looking, it is better for the INDOT to use a secret reserve price; on the other hand, when bidders are forward looking, it is better for the INDOT to use a secret reserve price when the discount factor is low and to use a public reserve price when the discount factor is sufficiently high.