Stephen D. Simpson at Motely Fool provides information on what investors need to do to achieve 100 percent returns on their stock investments within different time frames:

• Five year timeframe – proven concept stocks: to double your money within five years you must buy high quality stocks that consistently achieve 15 percent appreciation excluding dividends
• Three year timeframe – Emerging excellence, growth industries: to double your money within three years, the stocks you pick must consistently achieve a 26 percent annual appreciation
• One year timeframe – lightning in a bottle: Doubling your stock investments within one year involves picking stocks that are about to cause a major disruption in their market sector and have the potential to crush their competition.

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