Beyond a Methodological Reading, When Fama Meets Hayek on Information

Abstract : Hayek and Fama are sometimes seen as proposing a comparable theory of prices. Hayek proposes to understand prices as information conveyer from the process of competition, while Fama defines efficiency as the fact that all information in a market is integrated in assets prices. This close up ignores huge differences between the authors. This paper explains how a lineage between Hayek and the theory of informational efficiency of Fama can be illustrated while taking into account these differences. We introduce in order to defend this claim a distinction between methodology and epistemology: methodology is seen as the way an author operationalizes his broader conceptions whereas epistemology is defined as the core conception of his theory. We particularly emphasise a homogeneous shift in the epistemology of Hayek and the theory of efficiency. We conclude that this shift gives a content to what some authors called neoliberalism as a form of Weltanshauung.
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Submitted on : Saturday, November 24, 2018 - 4:08:17 PM
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Nathanael Colin, Thomas Delcey. Beyond a Methodological Reading, When Fama Meets Hayek on Information. 2018. 〈hal-01933895〉

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