Investing like a girl

So how exactly do women invest? Check out these characteristics of female investors that distinguish them from their male counterparts.

Women spend more time researching their investment choices than men do. This prevents them from chasing "hot" tips and trading on whims -- behavior that tends to weaken men's portfolios.

Men trade 45% more often than women do, and although men are more confident investors, they tend to be overconfident. By trading more often -- and without enough research -- men reduce their net returns. But by trading less often, women get better returns and also save on transaction costs and capital gains taxes.

A study by the University of California at Davis found that women's portfolios gained 1.4% more than men's portfolios did. What's more, single women did even better than single men, with 2.3% greater gains.

Women tend to look at more than just numbers when deciding whether to invest in a company. They invest in companies they feel good about ethically and personally. And companies with good products, good services, and ethics tend to have better long-term prospects -- and face fewer lawsuits.