 THE WOODLANDS, Texas, June 8, 2021 PRNewswire -- TETRA Technologies, Inc. TETRA or the Company NYSE:TTI is set to join the broad-market Russell 3000 Index at the conclusion of the 2021 Russell indexes annual reconstitution, effective after the US market opens on June 28, 2021 according to a preliminary list of additions made public on June 4, 2021. Annual Russell indexes reconstitution captures the 4,000 largest US stocks as of May 7, 2021 ranking them by total market capitalization. 