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The invention of market cap-weighted indices has been beneficial for the average investor by providing a simple and efficient ...

That trailed the market cap-weighted S&P 500 (+1.8% ... [BRIEFING.COM] The stock market exhibited extreme turbulence on the first session of the week on above-average volume. The S&P 500 (-0.2%), ...

However, the S&P 500 (SNPINDEX: ^GSPC) is generally considered the best barometer for the overall U.S. stock market due to its scope and diversity. Read on to see the S&P 500's average return over ...