BSE 100

The BSE 100 (S&P BSE 100) is a broad large-cap equity index maintained by Asia Index Private Limited — the joint venture between BSE and S&P Dow Jones Indices — comprising the 100 largest and most liquid companies listed on the Bombay Stock Exchange, providing more comprehensive large-cap coverage than the BSE Sensex's 30 constituents. The index uses free-float market capitalisation weighting and includes all 30 Sensex companies plus an additional 70 large-cap companies across diverse sectors — creating a more diversified and sector-representative benchmark for Indian large-cap equities. The BSE 100 is the benchmark used by several mutual fund schemes seeking broader large-cap representation beyond the concentrated Sensex, and it serves as the underlying for index-based products that seek to replicate a broader slice of India's established corporate sector. BSE 100 constituent changes are announced and reviewed periodically — companies entering the top 100 by free-float market capitalisation are eligible for inclusion, while those falling below are reviewed for exclusion during the semi-annual rebalancing exercise. For investors comparing performance of actively managed large-cap funds against passive alternatives, the BSE 100 provides a relevant benchmark that better represents the opportunity set available to large-cap fund managers than the narrower 30-stock Sensex. BSE 100-based ETFs and index funds are available for investors seeking low-cost, passive large-cap exposure across India's 100 largest corporations.