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Discussion Paper Details

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Title: Advertising Arbitrage

Author(s): Sergei Kovbasyuk and Marco Pagano

Publication Date: July 2020

Keyword(s): advertising, limited attention, Limits to Arbitrage and price discovery

Programme Area(s): Financial Economics

Abstract: Arbitrageurs with a short investment horizon gain from accelerating price discovery by advertising their private information. However, advertising many assets may overload investors' attention, reducing the number of informed traders per asset and slowing price discovery. So arbitrageurs optimally concentrate advertising on just a few assets, which they overweight in their portfolios. Unlike classic insiders, advertisers prefer assets with the least noise trading. If several arbitrageurs share information about the same assets, inefficient equilibria can arise, where investors' attention is overloaded and substantial mispricing persists. When they do not share, the overloading of investors' attention is maximal.

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Bibliographic Reference

Kovbasyuk, S and Pagano, M. 2020. 'Advertising Arbitrage'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=15064