Russell Investment Group released on June 12 those companies that will join or leave the Russell 3000 Index when that index of the broad market is reconstituted on June 22. The full list is available on Russell’s Web site.

The combined market capitalization of the stocks in the Russell 3000 stands at $18.5 trillion, an increase of more than $3 trillion from where its market cap stood last year at this time–at the $15.3 trillion mark.

In announcing the reconstitution, Russell’s senior portfolio strategist Steve Wood noted that the Russell 3000 was up 22.6% in total return for the year ended May 31, 2007; The 3000 reached an all-time high of 896.71 on June 1; as of the close of trading on June 12, it stood at 867.93.

The final membership lists for the Russell 1000, 200, and 3000 will be posted by the company on June 25.