The 10 largest stocks in the S&P 500 account for about 40% of the index's weight, meaning the index is more concentrated than ...

When financial analysts talk about the biggest or most valuable publicly-traded companies in the world, they mean the companies that have the largest market capitalization. Called market cap for short ...

Mid-cap stocks are large enough to have survived the startup phase but small enough to grow meaningfully. The challenge is ...

Market-cap-weighted valuations resemble 1999’s peak. Learn more about locking in income at low valuations to help boost your ...