Efficient markets theory is a field of economics which seeks to explain the workings of capital markets such as the stock market. In an efficient market, the prices of stocks reflect a rational assessment of the true underlying worth of a stock. This can be contrasted with an inefficient market in which prices might be affected by other factors such as fashion, greed, panic and stock market bubbles. A central part of this theory is the Efficient market hypothesis.
... (CAS) - Founded in January 1941 by Daniel Mayer[?], member of the French Socialist Party[?]. Later it was lead by a bookshop keeper Pierre Brossolette in Paris.
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