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Saturday, September 15, 2007

Reflexivity

Reflexivity, financial markets, and economic theory
Soros' writings focus heavily on the concept of reflexivity, where the biases of individuals are seen as entering into market transactions, potentially changing the fundamentals of the economy. Soros argued that such transitions in the fundamentals of the economy are typically marked by disequilibrium rather than equilibrium in the economy, and that the conventional economic theory of the market (the 'efficient market hypothesis') does not apply in these situations. Whether Soros is theoretically right or wrong on this issue, Soros certainly has the market credentials and proven track record to effectively maintain that his theory of reflexivity is practically relevant in the marketplace — at least for him. Soros has popularized the concepts of dynamic disequilibrium, static disequilibrium, and near-equilibrium conditions.
Reflexivity is based in three main ideas:
(1) Reflexivity is best observed under special conditions where investor bias grows and spreads throughout the investment arena. Examples of factors that may give rise to this bias include (a) equity leveraging or (b) the trend-following habits of speculators.
(2) Reflexivity appears intermittently since it is most likely to be revealed under certain conditions; i.e., the equilibrium process's character is best considered in terms of probabilities.
(3) Investors' observation of and participation in the capital markets may at times influence valuations AND fundamental conditions or outcomes.

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