Avoiding Analytical Distortions

Ryan ZabrowskiAdvisor Perspectives welcomes guest contributions. The views presented here do not necessarily represent those of Advisor Perspectives.

Historical analyses of stocks for valuation purposes are contingent upon relevant comparisons, or comparisons of “apples with apples.” Surprisingly, that’s something missing in valuation studies, which typically compare today’s apples with apples picked years ago. In effect, what they are comparing is apples with oranges. Conclusions drawn by comparing current stocks or earnings with those of other time periods tend to be skewed, depending on when the analyses began.

Wall Street strategists often take this easy route. A typical headline might read: “Stock prices are high compared to stock prices in 1990, so investors should avoid stocks right now.” That’s lazy analysis that reveals nothing of value for investors.

Another example: “European companies are trading at a P/E of 12 versus U.S. companies trading at a P/E of 17, so investors should own European companies.” Again, that’s comparing apples to oranges. The European economy is totally different from that of the U.S. The only thing that's consistent is the P/E, but what’s being measured is actually very different.

Among Europe’s largest 20 companies, only two are technology companies, representing a combined market capitalization of $600 billion. In the U.S., eight of the 20 largest companies are in technology and their combined market capitalization is $14.7 trillion. That’s roughly 25 times the size of the two European technology companies!

Using the two economies to compare market capitalizations is senseless.