ICAEW.com works better with JavaScript enabled.

The efficient market hypothesis

Consultant Andrew Strickland considers market oddities, such as the Chipotle paradox, that challenge the effcient market hypothesis.

In financial economics, the efficient-market hypothesis states that asset prices fully reflect all available information. A direct implication is that it is impossible to "beat the market" consistently on a risk-adjusted basis, since market prices should only react to new information or changes in discount rates.

The hypothesis was developed by Professor Eugene Fama, one of the true “greats” of financial markets analysis. Fama argues for the purest form of the hypothesis: namely, that shares trade at their fair value, making it impossible for investors to either purchase undervalued shares or sell shares for inflated prices.


Continue reading

This content is not freely available. To access 'The efficient market hypothesis' you need to be one of the following:

ACA student

This content is available to ACA students. If you want to start the ACA qualification there are several routes you can take

Business and Finance Professional

An internationally recognised designation and professional status from the ICAEW.

ICAEW member

Gain access to world-leading information resources, guidance and local networks. 98% of the best global brands rely on ICAEW chartered accountants.

Valuation Community

Expert insights into regulatory and technical changes impacting this increasingly complex field.