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Index Family:    Wilshire Broad Market Indexes
Index Name:    The Wilshire 5000 Total Market Index

Measures the performance of all U.S. equity securities with readily available price data. Over 5,000 capitalization weighted security returns are used to adjust the index. The Wilshire 5000 base is its December 31, 1980 capitalization of $1,404.596 billion. Therefore, the index is an excellent approximation of dollar changes in the U.S. equity market. For instance, values of 2157.146 on 12/30/85 and 2164.690 on 12/31/85 represent an approximate increase of $7.5 billion. The Wilshire 5000 is the best measure of the entire U.S. stock market.

Single Day Records
Top increases and declines all time and the past 52 weeks

Construction/Methodology

Membership

  • An equity issue: a common stock, REIT or limited partnership.
  • A U.S. company.
  • A security that has its primary market listing in the U.S.
Bulletin board issues will not be added to the indexes because it is assumed that they do not have consistently "readily" available prices.
The company’s primary issue for index valuation is determined based on the following criteria:
  • Market capitalization
  • Trading volume
  • Institutional holdings
  • Conversion rules (for companies with multiple share classes)

Weighting

  • The indexes are weighted by both full market capitalization and float-adjusted market capitalization.

Share Treatment and Float Adjustment

  • Shares outstanding for multiple classes of stock are combined into the primary issue's shares outstanding to reflect the company’s total market capitalization.
  • Float adjustments are based on block ownership of each class of stock, and then are combined to determine total float for a company’s combined shares.
  • Float-adjustment factors will be implemented only if the blocked shares are greater than 5% of the company's total shares outstanding.
  • Float-adjusted factors for limited partnerships are set to zero.

Adjustments and Maintenance

  • Stock additions and deletions are made after the close of trading on the third Friday of each month. The additions include all companies that met inclusion standards during the previous calendar month, whether from IPOs or new exchange listings.
  • An issue that becomes a pink sheet or otherwise stops trading for ten consecutive days will be removed from the indexes at the next monthly review. It will be removed at its latest quoted value, or at $0.01 if no recent quoted value is available. Until the monthly review, the issue will remain in the indexes at its last exchange-traded price.
  • Once a quarter, current component stocks with more than 20 non-trading days that have not been suspended are deleted. Suspended stocks are evaluated separately for removal.
  • Additions and deletions are pre-announced by the 2nd day prior to the implementation date.
  • An issue that fails index inclusion guidelines is removed from the indexes as soon as prudently possible.
  • Periodic shares updates are made quarterly after the close of trading on the third Friday of March, June, September and December. The changes become effective at the opening of trading on the next business day.
  • If the cumulative impact of corporate actions during the period between quarterly shares updates changes a company's float-adjusted shares outstanding by 10% or more, the company's shares and float factor will be updated as soon as prudently possible. Share and float changes based on corporate actions will be implemented using standard Wilshire Indexes procedures. Except to account for stock splits and reverse splits, shares and float factors will not be adjusted for bulletin board and pink sheet stocks. These securities will remain in the indexes with the same shares and float factors until they are returned to exchange listings or are removed from the indexes.

Construction/Methodology (PDF)

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Today's Wilshire 5000
Total Market Index
September 19, 2014 21,219.88
One Day Change -34.13
% Change -0.16
Intra-day High 21,329.33
Intra-day Low 21,172.14
One Year Ago 18,216.53
52-Week High 21,270.32
On September 5, 2014
52-Week Low 17,668.15
On October 9, 2013
All-Time High 21,270.32
On September 5, 2014


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