RT Journal Article T1 Tacit Collusion in Repeated Auctions: Uniform versus Discriminatory A1 Fabra, Natalia AB Within an infinitely repeated game, I compare the level and conduct ofcollusion under uniform and discriminatory auctions. For this purpose,I characterize the optimal collusive schemes and sets of sustainable profits under these auction formats. I show that uniform auctionsfacilitate collusion more than discriminatory auctions: the optimalpenal code is equally severe under the two formats; but bidders’ deviation incentives are weaker in uniform auctions given that the payoff irrelevant bids can be used to relax the enforcement problem. Thisdiscussion is particularly relevant after the recent reforms in theelectricity industry in England & Wales, and elsewhere. PB Blackwell SN 1467-6451 YR 2003 FD 2003-09 LK https://hdl.handle.net/10016/5000 UL https://hdl.handle.net/10016/5000 LA eng NO This is the accepted version of the following article: Fabra, N. (2003), Tacit Collusion in Repeated Auctions: Uniform Versus Discriminatory. The Journal of Industrial Economics, 51(3), 271–293, which has been published in final form at: http://dx.doi.org/10.1111/1467-6451.00201 DS e-Archivo RD 8 may. 2024