BIST Announces 2025 Second‑Quarter Index Component Changes

Borsa İstanbul (BIST) has officially announced the changes to its index components for the second quarter of 2025. The revisions will take effect on June 30, 2025, and aim to better reflect market dynamics. Under the restructuring, certain companies will be removed from the indices while new ones will be added. Updates to the weighting methodology will place greater emphasis on liquidity and market‑capitalization criteria, thereby enhancing the representativeness of the indices. The changes also include improvements to the data sources and frequency used in index calculations. This revision could directly impact index performance and portfolio‑management strategies. Investors and fund managers may consider rebalancing portfolios in light of the new components and weightings. Additionally, index‑based investment products and ETFs may need to adjust their benchmarks. BIST views these adjustments as part of a periodic revision process designed to increase transparency and reliability for market participants. Investors are advised to closely monitor the details and implementation dates of the changes. This is not investment advice.