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Game Theory 9.4/10

First-Price Auction with Uniform Values

Two risk-neutral bidders have private values drawn independently and uniformly from [0, 1]. In a sealed-bid first-price auction (the winner pays their own bid), each bidder bids a fixed fraction of their value in the symmetric equilibrium. What fraction?

Related problems & prerequisites

Worth solving first

Source: Standard first-price sealed-bid auction result from the auction-theory literature founded by William Vickrey (1961). Statement written for AxiomIQ.