Monday, January 29, 2007

Weekly Summary

For the week ending Jan. 26th, the portfolio finished up just 0.27%. It was a disappointing week given the advances most of my stocks had early in the week. I did however, manage to outperform the S&P by 86 basis points and the Russell 1000 by 77. I underperformed the 2000 by a few basis points. As of Friday, I know have just over $75,000 in individual stocks and $175,000 in mutual funds. I'm on schedule to have a 50/50 distribution by the end of the first quarter.

IV Calc

Warren Buffett Intrinsic Value Formula (?)
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Buffett's Value Formula (?)

Warren Buffett hasn't exactly published his formula for what he calls the intrinsic value of a company, but he has dropped a number of hints. He apparently multiplies estimated future earnings by a confidence margin between zero and a hundred percent (a bird in the bush being worth 0.5 birds in the hand, and all that; bush birds are the earnings you hope for, and hand birds are the earnings you're confident will materialize). He then compares these probable earnings with something he has total confidence in, by using a U.S. treasury yield as his discount rate. In calculator form it looks like this:

 

Earnings
Earnings per share (last 12 months): $
Growth Assumptions
Earnings are expected to grow at a rate of % annually
for the next years,
before leveling off to an annual growth rate of % thereafter.
Confidence Margin
How confident are you that these expected future earnings will really materialize?   %
Discount Rate
Best available return that you have 100% confidence in (like a Treasury bond):   %
 
Results
Stock Value per share: $

 

       This calculator doesn't use fancier math than the original one did. Its advantage is that it forces you to be explicit about your earnings expectations. It also automatically provides you with a hard-headed investment strategy: always invest in government bonds, unless you can find something else you are confident will yield more cash.

One other hint that Buffett has dropped over the years is that he can estimate value in his head in about five seconds; so whatever he does he keeps it simple, slugger.

 

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P/E Ratio
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Buffett Formula (?)
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Also See
Valuation Formula