MSCI announces May 2026 index review changes across equity indexes

MSCI Inc. (NYSE: MSCI) announced results of its May 2026 Index Review for MSCI Equity Indexes, with all changes taking effect at the close of May 29, 2026.

The MSCI ACWI Index will see 49 securities added and 101 deleted. The three largest additions to the MSCI World Index by full company market capitalization are Medline A (USA), MasTec (USA) and TechnipFMC (USA). For the MSCI Emerging Markets Index, the largest additions are Itau Unibanco On (Brazil), Yangtze Optical Fibre and Cable Joint Stock Limited Company A (HK-C) (China) and Sichuan Biokin Pharmaceutical A (HK-C) (China).

The MSCI ACWI Small Cap Index will have 246 additions and 195 deletions. The MSCI ACWI Investable Market Index will see 208 additions and 209 deletions, while the MSCI World All Cap Index will have 144 additions and 81 deletions.

For frontier markets, the MSCI Frontier Markets Index will add five securities and remove eight. The largest additions by market capitalization are Ho Chi Minh City Development Joint Stock Commercial Bank (Vietnam), Binh Son Refining and Petrochemical Joint Stock Company (Vietnam) and Banque Internationale pour le Commerce et l'Industrie de la Côte d'Ivoire (Ivory Coast). The MSCI Frontier Markets Small Cap Index will see 25 additions and 19 deletions.

Due to market accessibility issues, MSCI will not implement changes for securities classified in Bangladesh for MSCI Bangladesh Indexes or related composite indexes as part of this review.

The changes also affect MSCI US Equity Indexes, MSCI US REIT Index, MSCI China A Onshore Indexes and China All Shares Indexes, according to the company's press release.

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