Surprise S&P 500 entrant launches unexpected trading feature

Group 1 - Robinhood Markets has been added to the S&P 500 index, which has positively impacted its stock price, resulting in a 17% increase since the inclusion [5] - The company is set to launch a new social media feature called Robinhood Social, allowing users to share trading strategies and market moves within the app [1][2] - Robinhood Social will enable users to follow verified traders and market influencers, enhancing transparency in shared trading information [2][3] Group 2 - The new feature will be available at no additional cost and will initially launch by invitation only to select U.S. customers early next year [3] - CEO Vlad Tenev emphasized that Robinhood is evolving into a "financial superapp," indicating a shift in the platform's role beyond just trading [4]