Efficiency and stability in complex financial markets

Fabio Caccioli and Matteo Marsili

No 2010-3, Economics Discussion Papers from Kiel Institute for the World Economy (IfW Kiel)

Abstract: The authors study a simple model of an asset market with informed and non-informed agents. In the absence of non-informed agents, the market becomes information efficient when the number of traders with different private information is large enough. Upon introducing non-informed agents, the authors find that the latter contribute significantly to the trading activity if and only if the market is (nearly) information efficient. This suggests that information efficiency might be a necessary condition for bubble phenomena - induced by the behavior of non-informed traders - or conversely that throwing some sands in the gears of financial markets may curb the occurrence of bubbles.

Keywords: Interacting agents models; market efficiency; market stability; statistical mechanics of financial market (search for similar items in EconPapers)
JEL-codes: G01 G14 (search for similar items in EconPapers)
Date: 2010
New Economics Papers: this item is included in nep-cta
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https://www.econstor.eu/bitstream/10419/29537/1/615809022.pdf (application/pdf)

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Persistent link: https://EconPapers.repec.org/RePEc:zbw:ifwedp:20103

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