The Wilshire 5000 Total Market Index measures the performance of all U.S. equity securities with readily available price data.

FORBES: Magazine Article

Suppose, for instance, that you decide to invest in an exchange-traded fund that mirrors the MSCI Emerging Markets Index, which measures equity market performance in 26 emerging economies.

FORBES: By Zack Miller

As well as looking at historical performance, these measures capture the market's estimates of firms' growth prospects.

ECONOMIST: A star to sail by?