In laymans terms, what is the Efficient Market Hypothesis?
The Efficient Market Hypothesis says that market prices are fair: they fully reflect all available information. This does not mean that prices are perfect; some prices may be too high and some too low, but there is no reliable way to tell. In an efficient market, investors cannot expect to earn above-average profits without assuming above-average risks. Market efficiency does not suggest that investors can’t “win.” Over any period of time, some investors will beat the market, but the number of investors who do so will be no greater than expected by chance.
