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Investing Glossary:
Random walk
Copyright 2009,
Campbell R. Harvey. All Rights Reserved.
Do not reproduce without explicit permission.
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| Definition: |
| Theory that Stock price changes from day to day are accidental or haphazard; changes are independent of each other and have the same Probability distribution. Many believers in the Random walk theory believe that it is impossible to outperform the Market consistently Without taking additional risk.
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