Darn it took me long enough to find this article... its a little commentary on Buffetology wedged in there about how ol' Warren justifies companies and their debt... any how here is the article, it probably wont hurt to read and consider his strategies.
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The Motley Fool - August 18, 1998 18:18 August 18, 1998/FOOLWIRE/ -- After checking into the Fool's most popular message boards the other day, I discovered how popular the Buffettology message board is. For those not familiar, Buffettology is a book by the former daughter-in-law of Berkshire Hathaway (NYSE: BRK.A) chairman Warren Buffett. The book attempts to explain how Buffett determines value and identifies companies with superior economics and to "show the mathematical models and equations Buffett uses to determine the basic value and earnings potential..." of companies in which he and Berkshire invest. Subtitled "The Previously Unexplained Techniques That Have Made Warren Buffett the World's Most Famous Investor," the individual investor world has snapped up this book, voracious in its appetite for all things about Buffett.
In looking through the active commentary and analysis using these "previously unexplained" methods, return on equity (ROE) is one performance measure that is frequently used by those investors who have read the book and are seeking to internalize. That led me to chapter 35 in the book, "Understanding Warren's Preference for Companies with High Rates of Return on Equity." I was disappointed by what I found in the chapter.
The reason is that not all rates of return on shareholders' equity are created equal. Two companies generating the same 20% ROE can exhibit very different economic characteristics. That's because ROE is far more than just earnings divided into owners' equity. Ah no, it's far more elegant than that. Return on equity is a function of three variables: 1. Asset turnover, 2. Net margin, and 3. Financial leverage. As an equation, ROE looks like this:
Revenues Net Income Assets ------------ x ------------- x --------- Assets Revenues SE
(Note: SE = shareholders' equity. Both shareholders' equity and assets should be averaged for the year rather than just using beginning figures.)
There are three main financial levers for ROE, then. If you have a business where your inventory management is poor and your margins show that your products don't have pricing power or that you're just an inefficient producer, then you can generate a high ROE by piling on the debt. Let's look at how that works. If my company turns over its assets once every two years (0.5 times every year) and shows a net margin of 3%, then I need a bunch of debt to get to an ROE of 20%:
Asset turnover of 0.5 x net margin of 0.03 x leverage of Y = ROE of 20%. So, 0.015 x Y = ROE of 20%. And Y = 0.2 / 0.015, and finally, leverage = 13.3. For every dollar in equity, I have 13.3 dollars in assets. Put in another way, for every dollar of assets, I have 7.52 cents in equity. That sort of business might not last very long and really doesn't show great economics. Does this satisfy Buffett's tests? It sure doesn't look like the financial model of many of his longer-term investments, though God only knows what he bought in his stricter "cigar butt" investing days. What Buffett looks for is contained in the annual report every year*, and you don't need a fancy new $30 hardcover book to learn this. Buffett looks for "usinesses earning good returns on equity while employing little or no debt."
The typical Buffett company is a high return on assets (ROA) company. Whoa! Huh? What Buffett is saying about a high ROE with little or no debt means that he wants companies generating a high ROA. This is because ROA times leverage equals ROE. Dissecting the above three-part equation, we can prove this:
Revenues Net Income ------------ x -------------- = ROA Assets Revenues
By taking the common elements out of the above equation, ROA can be expressed as we are used to looking at it: Net income divided by (average) assets. Taking the same inputs we used above, the company's ROA would equal 0.5 times 0.03, or 1.5% ROA. That sort of ROA is pretty bad for all but the banks and other financial services companies. For a consumer products company or a manufacturing company, it usually means something is pretty wrong. With a high return on assets company, the pathologically risk-averse management doesn't have to have any leverage to generate a satisfying return on assets. But with a little bit of leverage, the return on assets can be magnified into an excellent ROE without endangering the safety or autonomy of the enterprise. We'll look at some examples of this, including Berkshire's "Inevitables," tomorrow.
*Every year, there is an "advertisement" in the Berkshire annual report in which Buffett and Vice-Chairman Charlie Munger solicit calls from principals or their representatives of companies that are interested in being purchased by Berkshire Hathaway. Berkshire is interested in companies with more than $25 million in pre-tax earnings |