Russell 1000, 2000, 3000

These are indices produced by Russell Investments.  The Russell 3000 is an index of the 3,000 largest U.S. companies, based on total market capitalization and represents about 98% of the money invested in the U.S. market.  The Russell 1000 shows the largest 1,000 market capitalization corporations, and the Russell 2,000 represents small cap firms (3,000 minus the top 1,000).  They represent only 10% of the market capitalization.  Go to their website for further information.