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The Magic of Compounding

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by Richard Stoyeck -  Jun 25, 2007
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If you work for me in September with 30 days you make over $5,000,000. In December it's over $10,000,000! I have never met the child who didn't leap at the $1,000,000 on day one. This is because human brains think arithmetically, not exponentially. You might say that we are hardwired to think in this linear way, that the software in our brains compels us to think about progressions as being simple arithmetic ones. Luckily though, how we think about things, our prejudices, our attitudes, and our mindsets, can all be changed and worked with. We can update the software! We can consciously change the way we think about numbers, money and investing by absorbing new information, namely, that when you make your money compound you can get rich sooner rather than later.

Teach your children to live a balanced life, and also help them master this concept and you will have very happy and very rich children. In stocks make money at the bottom by buying depressed securities that are going to come right back, making you a fortune as they rocket off the bottom. In the future make money with the Warren Buffet concept, or classical Graham and Dodd analysis.

The New Slant

Really understanding compounding will make all the difference in investing. I believe that Warren Buffett, the world's greatest investor, is hardwired to think geometrically. He is rich beyond dreams because he totally gets the magic of compounding, and he executes on the concept. I am going to get these numbers wrong because I'm doing them from memory but it doesn't matter. You'll get the concept. Buffett started a partnership way back when. He had a number of limited partners invest with him, and he took 20% of the gains. In the late 1960s he terminated the partnership with his famous letter,

"When you no longer understand the way the game is played, it's time to leave the game."

I'm paraphrasing, even though it's in quotes.

Buffet took about $100 million out of that first partnership for himself, so he was working with $100 million, keep that in mind. In 1974 when the bear market bottomed, it might have been early 1975, he started another rise...he took over Berkshire Hathaway. Buffet, since the 1970's, has been getting a compounded (remember that means exponential) growth rate of about 22 to 24%.

This is where I introduce you to the cousin of the Magic of Compounding, which is called the Rule of 72. With the Rule of 72 you can calculate how long it will take you to double your money at any given rate of return. OK? Let’s take an example. If you're earning 12% on your money and you want to know how long it will take to double it (we're compounding, remember?) divide 72 by 12, and your answer is 6. It will take 6 years to double your money. Let’s do another one. If you're getting 6% on your money, divide 72 by 6 and you'll see that it will take 12 years to double. If you're getting 9%, it's 72 divided by 9, or 8 years to double up.

As for Warren Buffett, he's getting 22% on his money. This means you divide 72 by 22 and gee, in only 3.27 years, or every 3 years and 4 months, he doubles his money. Since he's been at it about 35 years with that $100 million he had to play with, he's doubled his original $100 million almost nine times. You get that by taking 35 years and dividing by a double every 3 years and 4 months. It equals 10.70, or let's go with nine doubles to adjust for a rate of compounding that is varying. The key point is he's not making 9 times his money with the $100 million, that would be an arithmetic progression that would give him $900 million. He's making nine doubles, a geometric or compounded progression.

Let's see how that works.

Warren Buffet's Geometric Progression Starting Dollar Amount: $100 million Time Periods Involved: Nine 3 year and 4 month periods

Period Time Taken Compounded Gain

Starting Point $100,000,000

  1. 3 years, 4 months later $200,000,000
  2. 6 years, 8 months later $400,000,000
  3. 10 years later $800,000,000
  4. 13 years, 4 months later $1,600,000,000
  5. 16 years, 8 months later $3,200,000,000
  6. 20 years later $6,400,000,000
  7. 23 years, 4 months later $12,800,000,000
  8. 26 years, 8 months later $25,600,000,000
  9. 30 years later $51,200,000,000

I believe Buffet is worth about $47 billion. It doesn't matter, he is somewhere in his ninth double. This is the magic of compounding! Also, he never sells. This means his money is doubling every three years and four months with no tax consequences. He gets taxed only when he sells. Under normal conditions, the money compounds until he dies, then it's taxed at a capital gains rate in the far distant future. In Buffett’s case, he’s giving most of his wealth to the Gates’ foundation to benefit society.

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Comment on this Article

Recent Comments:
"Whenever I see an article about the gap between the rich and poor widening in this country, I think of compounding. If you go into debt, compounding works exponentially against you. If you save, compounding work exponentially for you. To me, the choice AND the result, is obvious. And there should be no doubt why the gap is widening." Agreed, but there is a fly in the ointment. Compounding savings when the real net inflation rate is low/negative undermines the point you make that...
chump   30-06-2007 05:57:48
Quote: Originally Posted by rharmelink Whenever I see an article about the gap between the rich and poor widening in this country, I think of compounding. If you go into debt, compounding works exponentially against you. If you save, compounding work exponentially for you. To me, the choice AND the result, is obvious. And there should be no doubt why the gap is widening. However, it does make the national debt a very scary...
damianoakley   30-06-2007 05:09:50
Whenever I see an article about the gap between the rich and poor widening in this country, I think of compounding. If you go into debt, compounding works exponentially against you. If you save, compounding work exponentially for you. To me, the choice AND the result, is obvious. And there should be no doubt why the gap is widening. However, it does make the national debt a very scary thing.
rharmelink   28-06-2007 23:36:46
Excellent article. Simple points, clearly presented and I wholeheartedly agree with the author that these principles ought to be taught in all schools. I first read about the concepts way back in 1990 in an excellent little book called 'How to Increase your Personal Wealth' by Peter Cutler PhD. Utilising this simple idea enabled my wife and I to pay off our mortgage in double quick time. I suspect that many T2W members will regard the article as too simplistic and fail to see how they can...
timsk   28-06-2007 13:24:29

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