 SACRAMENTO, Calif., June 28, 2021 GLOBE NEWSWIRE -- Alto Ingredients, Inc. NASDAQ: ALTO, a leading producer of specialty alcohols and essential ingredients, has been added as a member of the small-cap Russell 2000 Index and broad-market Russell 3000 Index. These additions will be effective after the U.S. market opens on June 28th, as part of the 2021 Russell indexes reconstitution. The stock will be automatically added to the appropriate growth and value indexes. 