More and more 401(k)s offer a formerly rare option—a brokerage window. That's raising questions from Washington regulators. Here's what you should watch out for.

The nation's largest pension fund and the most influential fund rater are both signaling that stock picking is dying as an investment strategy. If you're still trying to beat the market, it may be time to reconsider.

New regulations are meant to protect money market mutual funds from another 2008-like panic.

Two new products let you invest in companies led by female executives. Whether this is a good idea depends on what you hope to achieve.

Q: Does investing in a "total stock market index fund" give you diversified exposure to large-, medium-, and small-sized companies? Or do I need to invest in separate mutual funds for my large- and small-company...

As index funds are sopping up the world's investment dollars, an argument is emerging that this will eventually tip the scales back in favor of active managers. Don't worry just yet.