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The Wilshire 5000 Total Market IndexSM (Wilshire 5000®) is the original U.S. total market index and first index from Wilshire Associates. Created in 1974 and using then-new technologies which made it possible to collect stock prices and calculate returns for a volume of issues never before brought together, the Wilshire 5000 is widely accepted as the definitive benchmark for the total U.S. equity market. Monthly history is available as of December 1970. The Wilshire 5000 Family also offers a completion index, first introduced in 1983, followed by size and style indexes in 1986.
Wilshire 5000 Total Market Index: Includes all U.S. equities with readily available prices Wilshire 4500 Completion IndexSM: Includes the Wilshire 5000, less S&P 500 companies Wilshire US Style Indexes: An overview