No Trade Under Verifiable Information

Spyros Galanis

No 2025_01, Department of Economics Working Papers from Durham University, Department of Economics

Abstract: No trade theorems examine conditions under which agents cannot agree to disagree on the value of a security which pays according to some state of nature, thus preventing any mutual agreement to trade. A large literature has examined conditions which imply no trade, such as relaxing the common prior and common knowledge assumptions, as well as allowing for agents who are boundedly rational or ambiguity averse. We contribute to this literature by examining conditions on the private information of agents that reveals, or verifies, the true value of the security. We argue that these conditions can offer insights in three different settings: insider trading, the connection of low liquidity in markets with no trade, and trading using public blockchains and oracles.

Keywords: No trade; Blockchain; oracles; agreeing to disagree; information aggregation (search for similar items in EconPapers)
JEL-codes: D82 D83 D84 G14 G41 (search for similar items in EconPapers)
Date: 2022-05
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