A global financial-services firm plans to bring the concept of investing in art to the not-super-wealthy investor. Art adds diversification to an investment portfolio in that it has low correlation with stocks -- meaning, when stocks go up or down, art does not necessarily follow.

Emotions tend to guide our financial decisions -- often leading us to make mistakes with money. But studies show that embracing your emotions when making financial decisions can sometimes be helpful. Example: If you feel like you're being ripped off, you probably are.

In 2009, the Harvard and Yale endowments were praised for beating the market with their broad diversification strategies. One year later, each of the endowments posted double-digit losses -- forcing Yale to borrow money to cover the shortfall. Here's what went wrong.