Stressing out about the market is unhealthy — and can lead to bad investing decisions.

Prices are rising at a faster rate than at any time since the early 1980s. It could mean pain for stock market investors, at least in the short term.

These investments got a lot of hype. Now see how they actually performed.

Stocks make up 24% of household assets, up from just 13% a decade ago.

These companies' shareholders are more than just investors.

Amid a historic stock market rally, millions of Americans have been buying and trading stocks. But at least one key market indicator suggests the party may not last. A widely followed gauge of what Wall...