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Why You Shouldn't Double Up

By Tim Hanson - Updated Nov 11, 2016 at 4:50PM

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Avoid these stocks -- you may already own them.

Quick quiz: How many people own an index fund that mirrors the S&P 500?

Good question
While we don't know the exact number, it's probably a lot. Consider: Two funds -- one a mutual fund, one an exchange-traded fund -- hold more than $150 billion in assets between them. Vanguard's famous 500 Index Fund (VFINX) sports total assets of $81 billion; its younger cousin, the SPDRs (SPY) ETF, holds $77 billion. By way of a useless comparison, New Zealand's GDP, the world's 51st largest, is $128 billion.

But this is good. After all, 75% of actively managed mutual funds fail to beat the passive index each year, and the S&P's historical annual return (with dividends) has been a great way to grow your savings. Even better, VFINX and SPY are two excellent low-cost options. So if you have money invested in one of these vehicles, good for you.

Thanks for the compliment, but so what?
Now take a holistic look at your portfolio. Do you also own shares of Wells Fargo (NYSE:WFC), Coca-Cola (NYSE:KO), or PepsiCo (NYSE:PEP)? If so, you may have unwittingly doubled down on these three market behemoths. That's because these three stocks are among the most heavily weighted stocks in the S&P 500; they account for 3.4% of the index.

Or what if you hold shares of CVS Caremark (NYSE:CVS), which makes up another 0.5% of the S&P 500? Such concentrations essentially mean you've doubled down on a company -- so you'd better be confident in its growth potential.

The point is, if you invest in individual large caps and steer another hefty portion of your savings into the S&P 500, you may be heavily concentrated in one asset class: U.S. large caps. Is this the asset-allocation game plan you really want?

Livin' large
Don't misunderstand: It's smart to hold dividend-paying large caps. They're steady. They make for smart anchors to your overall portfolio -- particularly if you can buy shares at good prices. (Indeed, we both own 3M.) But here's what large-cap stocks aren't: the best-performing stocks on the market.

No, that honor goes to small caps. In our Motley Fool Hidden Gems small-cap investing service, we define small caps as companies capitalized at less than $2 billion. According to Capital IQ, there are only 58 small caps in the S&P 500, and many of those are former mid caps that have been hammered over the past year: Eastman Kodak (NYSE:EK), Centex (NYSE:CTX), and InterPublic (NYSE:IPG), to name three. These 58 stocks compose hardly 2% of the S&P 500. That's right: 2%.

Add some spice
Even within the most conservative asset-allocation plan, there's room for more than just 2% of small-cap exposure -- be it 10%, 20%, or even 50%. (It depends on your investment timeline and risk tolerance.) While small caps can be volatile, the returns will help you beat the market over the long term and maximize your savings, particularly if you can pick promising small caps.

That last goal is the mission of Hidden Gems. Boiled down, our methodology is simple: Start with the more than 3,000 small caps on the major exchanges, and find the best by blending qualitative and quantitative research. Even in a terrible bear market, our picks are outperforming the S&P 500.

That kind of kick is worth adding to your index fund. Click here to learn more about a free trial.

This article was originally published Aug. 24, 2006. It has been updated.

Tim Hanson and Brian Richards construct their portfolios as they would a Nintendo Ice Hockey team. Tim owns shares of 3M. Brian owns shares of 3M and VFINX. 3M and Coca-Cola are Motley Fool Inside Value recommendations. The Fool's disclosure policy floats like a butterfly and stings like a bee.

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Stocks Mentioned

The Coca-Cola Company Stock Quote
The Coca-Cola Company
KO
$63.70 (0.76%) $0.48
Wells Fargo & Company Stock Quote
Wells Fargo & Company
WFC
$45.94 (1.52%) $0.69
Pepsico, Inc. Stock Quote
Pepsico, Inc.
PEP
$177.33 (1.31%) $2.29
CVS Health Corporation Stock Quote
CVS Health Corporation
CVS
$106.39 (2.05%) $2.14
The Interpublic Group of Companies, Inc. Stock Quote
The Interpublic Group of Companies, Inc.
IPG
$30.34 (-0.10%) $0.03
Eastman Kodak Stock Quote
Eastman Kodak
KODK
$6.82 (6.90%) $0.44

*Average returns of all recommendations since inception. Cost basis and return based on previous market day close.

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