The term Wilshire US Small Cap Index refers to a composite that includes small capitalization companies located in the United States. The Wilshire US Small Cap is published and maintained by Wilshire Associates.
The Wilshire 5000 Total Market Index is designed to measure the performance of the large, mid, small, and micro capitalization companies in the United States equities market. The index is a composite of all the securities (primary equity, common stock, REIT, or Limited Partnership) that have a primary market listing in the United States. The Wilshire US Small Cap Index consists of 1,750 companies contained in the Wilshire 5000 that rank between 751 and 2,500 in terms of market capitalization.
First published in 1996, the index is rebalanced every six months. The Wilshire US Small Cap is a float-adjusted, market capitalization-weighted index. The performance of this index can be monitored via the stock ticker symbol W5KSC.