MSCI is trading 6.4% up at $613.96 today, reacting to the results of its 2026 Market Classification Review that were released on June 23, 2026. This key annual update can drive substantial index-linked flows and repositioning by global investors. - The review is a critical event for international markets, often leading to significant repositioning by institutional investors and fund managers. - Shares are also benefiting from broadly positive equity sentiment, with major U.S. indices and risk assets trading higher in the pre-market session.