John H. Cochrane
In 1970, in “Efficient Capital Markets: a Review of Theory and Empirical Work,” Gene Fama defined a market to be “informationally efficient” if prices at each moment incorporate all available information about future values. Informational efficiency is a natural consequence of competition, relatively free entry, and low costs of information. If there is a signal, not incorporated in market prices, that future values will be … [ Read more ]
Content: Quotation | Author: John H. Cochrane | Source: Capital Ideas | Subjects: Economics, Finance
Eugene F. Fama, Efficient Markets, and the Nobel Prize
In 1970, in “Efficient Capital Markets: a Review of Theory and Empirical Work,” Gene Fama defined a market to be “informationally efficient” if prices at each moment incorporate all available information about future values. Informational efficiency is a natural consequence of competition, relatively free entry, and low costs of information. If there is a signal, not incorporated in market prices, that future values will be … [ Read more ]
Content: Article | Author: John H. Cochrane | Source: Capital Ideas | Subjects: Economics, Finance