This headline isn't a projection. It's not a dream. It's reality. Some stock markets are at all-time highs. Right here in the U.S.
I'm talking about the S&P 400 MidCap Index
Source: Capital IQ, a division of Standard & Poor's.
Impressive. The index's better-known large-cap cousin, the S&P 500 Index, is still about 20% below its 2007 peak.
Why the outperformance? I wanted to know. So I did some Excel gymnastics until my head almost burst, and here's all I came up with: Mid caps are more expensive than large caps.
Before coming to that conclusion, I assumed the reason mid caps were at an all-time high was because they never became as overvalued as large caps in 2007. But that wasn't the case. Both the mid-cap index and the S&P 500 traded at similar P/E ratios in 2007.
My next hunch was that financials made up a larger portion of the S&P 500, and battered bank stocks like Citigroup
Here's what seems to be the distinguishing factor: The average stock in the mid-cap index has a forward P/E ratio of 17, whereas the average company in the S&P 500 trades for 13.6 times forward earnings. If the S&P 500 traded at the same earnings multiple as the mid-cap index, it'd also be at an all-time high. Mystery solved.
A few names stick out. One is Microsoft
In a recent Barron's article, Fred Hickey gave an interesting reason why smaller companies have outperformed large caps, and why to doubt smaller companies' valuations:
Small-caps are less liquid than large-caps. When liquidity is pumped back into the economy, they do well. When it comes out of the system, small-caps and real estate collapse. If the Fed stops reliquefying the system after June [when QE2 ends], that isn't good for small-caps.
In the same article, Goldman analyst Abby Joseph Cohen highlights another advantage large caps hold over mid caps:
Companies in the S&P 500 are well positioned. These are large companies with access to the public markets. They can borrow money when they need it. There will be ongoing pressure for small and midsize companies that are dependent on small and midsize banks, which aren't particularly robust. Roughly 40% of S&P profits comes from outside the U.S., which is also a benefit.
Should you avoid smaller stocks then? No. Good investments can be fond there, too. But in general the bargains aren't as obvious and the quality of the companies aren't as great compared with what can be found in large caps.
With all markets surging with abandon over the past six months, being picky and selective is now as important as it's ever been. If there's a class of stocks to avoid in general, it's those at all-time highs.
Check back every Tuesday and Friday for Morgan Housel's columns on finance and economics.
Fool contributor Morgan Housel owns shares of Microsoft and Johnson & Johnson. Intel, Johnson & Johnson, and Microsoft are Motley Fool Inside Value choices. Johnson & Johnson is a Motley Fool Income Investor selection. The Fool owns shares of and has bought calls on Intel. Motley Fool Options has recommended buying calls on Intel. Motley Fool Options has recommended a diagonal call position on Johnson & Johnson. Motley Fool Options has recommended a diagonal call position on Microsoft. The Fool owns shares of Johnson & Johnson, and Microsoft. Motley Fool Alpha owns shares of Johnson & Johnson. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.