Author

Cheng-Rui Wu

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Jul 2026

Collusion with Competitive Marginals: Price-Level Audits Are Blind by Construction

Empirical work on algorithmic collusion asks one question of the data: are prices supracompetitive? We show this can be answered"no"by a conspiracy that is nonetheless profitable. Consider bidding agents that couple only through the joint distribution of their unexplained bid components, leaving every agent's own bid l...

Xin Xu, Cheng-Rui Wu, Jiayu Lu et al. · arXiv.org · 1 citation