Skip to main content

You are here

Russell US Index Reconstitution

2019 Reconstitution calendar for Russell US Indexes

May-ranking month

May is "ranking" month when the largest US companies are lined up to form the preliminary Russell US reconstitution portfolio. In 2019, the rank day falls on Friday, May 10.

June-transition month

June is the month that the preliminary reconstitution portfolio is communicated to the marketplace. Beginning on June 7, preliminary lists are communicated to the marketplace and updates are provided on June 14, 21, and 28. The newly reconstituted indexes take effect after the market close on June 28.


The Importance of Russell Equity Index Reconstitution


Recon resources and materials

2018 Index membership lists (PDFs)
Construction & methodology