The S&P 500 has been perhaps the greatest wealth generation machine of the past several decades.

Tech-related stocks now exceed 50% of the S&P 500's $70T market cap, with top 10 firms at 40%, surpassing dot-com bubble concentration levels.

The gap in returns of two nearly identical stocks S&P 500 funds tells a story about what most investors misunderstand about ...

The Shiller Cyclically Adjusted Price-to-Earnings (CAPE) ratio measures how expensive the S&P 500 is by comparing its current ...

A simple momentum screen applied to S&P 500 stocks has quietly built a performance gap that turns identical starting ...

The S&P 500 sits 0.4% below its August record, but only 49% of eligible members remain above their 200-day moving averages.

Ben Snider of Goldman Sachs rejects S&P 500 earnings bubble fears while Deutsche Bank reaffirms its 8,000 target.

What is the latest performance of the S&P 500 index? Which stocks are moving on the S&P 500 today? Check this page regularly to get answers to all those stock market questions with the latest S&P ...

Market-cap weighting can hide cheaper mid-cap stocks, but investors still need a process for weighing valuation, business improvement, and price confirmation.

Shorting the S&P 500 without a margin account sounds like a loophole, but the most popular tool for doing it carries a hidden ...

When everyone indexes, what is the market? The Vanguard Group marked the 50th anniversary of the launch of its pioneering S&P 500 index fund on Monday. The late Jack Bogle's creation - a low-cost fund ...

Warren Buffett has long advocated low-cost S&P 500 index funds for nonprofessional investors. Instead of trying to identify individual winners or time the market, this approach offers exposure to ...