Fold Holdings, Inc., a Bitcoin financial services company, has been added to the Russell 2000 index, as reported on December 22. The inclusion marks a significant milestone for Fold, which focuses on enabling users to earn, save, and use Bitcoin through various financial tools. The Russell 2000 index is a key benchmark for U.S. small-cap stocks, representing a diverse range of companies and approximately 5% to 7% of the total market capitalization of publicly traded stocks in the U.S.