It's been over 100 years since investors began viewing the Dow Jones Industrial Average (DJINDICES: ^DJI) as an overall stock market barometer. However, despite its longevity, the index is deeply flawed. The Dow Jones Industrial Average is a price-weighted index. As a result, a 1% gain for a relatively small member like Goldman Sachs will move the index higher than a 2% gain for Apple.
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