A: FTSE Russell believes indexes are designed to represent the entire investable opportunity set. Because markets continually change, there must be a systematic procedure in place to keep the indexes’ representation of the markets or market segments reflective of new market information. Reconstituting the indexes semi annually plus adding eligible IPOs (initial public offerings) quarterly and applying daily adjustments maintains the representative nature of the Russell US indexes while avoiding the unnecessary turnover a more frequent reconstitution could cause.

A: Beginning on May 22, preliminary lists will be communicated to the marketplace and updates will be provided on May 29, June 5, June 12, June 18 and June 26. The newly reconstituted indexes take effect after the market close on June 26, 2026.

A: On rank day, all eligible US securities are ranked by their total market capitalization. Companies whose stocks are listed on eligible stock exchanges and who pass investability rules are considered for inclusion in the indexes. On announcement date, preliminary additions and deletions are communicated to the marketplace. Following query period and lockdown, changes to the Russell Indexes are implemented after the close of US markets on the fourth Friday in June.

A: At the June 2025 reconstitution, $114.7 billion and $102.5 billion in US stocks traded in the closing moments of Friday trading on the New York Stock Exchange (NYSE) and Nasdaq exchanges, respectively.

A: View FTSE Russell's complete Russell US Index construction and methodology document for more information.