The S&P 500 is a benchmark index that many investors treat as a stand-in for the broader stock market. The index now includes nine stocks with a market cap over $1 trillion. The stock market may ...

Stock-market bulls look reluctant to cut out early on this rally, but that doesn't mean things can't get choppy. U.S. investors just can't get comfortable with the bull market for stocks that recently ...

Markets are trading near peak levels, according to one metric. It is very difficult to time the market. Even when certain metrics are historically high or low, guessing exactly what the market will do ...

Concentration in the S&P 500 has reached astonishing levels. Given the big run, many investors have turned bearish, and there are many indicators suggesting the market is indeed overvalued. One ...