
excerpt from article-
Unless you're working full-time in the financial world, you don't have the skills, tools, information, time or interest in playing the market, especially the bond market. And even if you do play the market, the odds are you'll lose because the more you trade the less you earn; transaction costs and taxes kill returns. So for 94 million out of America's 95 million investors, being a lazy investor is the best defensive strategy.
In fact, even the hotshots working full-time in the financial world follow the same strategy with the bulk of their assets. It's their biggest secret. Mutual fund managers making an average $400,000-plus playing the market with your money, often lock away the bulk of their retirement assets in safe, untouchable portfolios using a variation of a lazy portfolio strategy. Why not, they're no dummies, they've got families to protect too.
Lazy portfolios are simple, well-diversified portfolios of three to 11 no-load index funds, either mutual funds or ETFs. But, unfortunately, Wall Street doesn't want you to use this Nobel Prize-winning strategy because it can't rake off enough in transactions fees from index funds.
link to lazy portfolio article