A RECIPE FOR A WELL-DIVERSIFIED PORTFOLIO

For years, large U.S. stocks were all you needed. A broader mix is better now.

- BY NELLIE S. HUANG

MOST kitchens are well-stocked with pantry staples, the foundation of all recipes. But every good chef knows that the best meals feature a variety of flavors, including some spice. Technique is important: Too much or too little of any single ingredient can make a big difference.

The same approach applies to portfolios. Earlier this year, many U.S. investors learned that their mix was off after foreign stocks significantly outpaced U.S. shares ... just as the S&P 500 stumbled badly. It quickly became clear that many investors were underexposed to foreign markets and overexposed to the U.S. In a June survey, Schwab Asset Management found that moderate-risk individual investors held just 10% of their portfolios in foreign shares; U.S. stocks, by contrast, made up 61%. In short, investor portfolios weren't diversified.

It was a comeuppance long in the making. For nearly 15 years, U.S. stocks have been the place to be. Why bother to diversify-break up your investments across a variety of stocks, bonds and other assetswhen the S&P 500 is beating everything? "It can be easy to forget the benefits of diversification in a very sharp upward-moving market," says Andrew Altfest, a certified financial planner with Altfest Personal Wealth Management in New York City.

But over time, you'll find that a mix of investments can smooth your returns, strengthen your resolve as an investor, dampen risk in your portfolio and keep you exposed to whichever corner of the market is working at the moment-no crystal ball necessary. In a truly diversified portfolio, some investments will be in favor while others are on the outs. "You will never own only winners, but you won't get stuck with only the laggards, either," says Jeff DeMaso, editor of The Independent Vanguard Adviser.