Philip Pilkington: The Efficient Markets Hypothesis Has Been Proved Wrong But Economists Do Not Want to Listen
Yves here. The Efficient Markets Hypothesis, along with the Capital Assets Pricing Model, is one of the cornerstones of financial economics. Pity both are wrong.
Actually, it’s worse than a pity, since financial economics informs not only how professional investors construct their investment portfolios, but similarly is the foundation for orthodox thinking among retail investors. And the Efficient Markets Hypothesis and the Capital Assets Pricing Model both understate market risk, so following their dictates leads investors to take on more risk than they intended to.
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