5 Ways to Double Your Investment

5 Ways to Double Your Investment
by Ken Clark

There's something about the idea of doubling one's money on an investment that intrigues most investors. It's a badge of honor dragged out at cocktail parties, a promise made by over-zealous advisors, and a headline that frequents the cover of some of the most popular personal finance magazines. Where this fixation comes from is anyone's guess.

Perhaps it comes from deep in our investor psychology; that risk-taking part of us that loves the quick buck. Or maybe it's simply the aesthetic side of us that prefers round numbers - saying your "up 97%" doesn't quite roll off the tongue like "I doubled my money." Whatever the source though, it is both a realistic goal that investors should always be moving towards, as well as something that can lure many people into impulsive investing mistakes. Knowing some of the most trusted avenues to doubling your money is something that all investors should have in their toolboxes.

The Classic Way - Earn It Slowly
Investors who have been around for a while will remember the classic Smith Barney commercial from the 1980s, where British actor John Houseman informs viewers in his unmistakable accent that they "make money the old fashioned way - they earn it." When it comes to the most traditional way of doubling your money, that commercial's not too far from reality.


Perhaps the most tested way to double your money over a reasonable amount of time is too invest in a solid, speculative portfolio that's diversified between blue-chip stocks and investment grade bonds. While that portfolio won't double in a year, it almost surely will eventually, thanks to the old rule of 72.


The rule of 72 is a famous shortcut for calculating how long it will take for an investment to double, if its growth compounds on itself. According to the rule of 72, you divide your expected annual rate of return into 72, and that tells you how many years it takes you to double your money.

Considering that large blue-chip stocks have returned roughly 10% over the last 100 years, and investment grade bonds have returned roughly 6%, a portfolio that is divided evenly between the two should return about 8%. Dividing that expected return (8%) into 72, gives a portfolio that should double every nine years. That's not to shabby, when you consider that it will quadruple after eighteen years, and octuple (8 times) after 27.

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Source: Investopedia.com