MSCI Inc.’s August 2026 index review became effective on September 1. Passive investment funds triggered substantial trading volumes as they adjusted portfolios to match new benchmarks. This scheduled reshuffle resulted in billions of dollars in global buying and selling activity.
The rebalancing tested India’s new closing auction mechanism with approximately $4 billion in flows. Significant turnover occurred during the final session of the previous day’s trading. Several Indian companies joined the indices, attracting hundreds of millions in expected passive inflows.
The reshuffle also removed other firms from the indices. The MSCI USA Standard Index underwent similar rebalancing with new additions seeing heavy trading. These movements highlight the influence of MSCI indices on global capital flows and stock performance.