BSE Index Rejig — Effective 31 October 2025
Aditya Birla Lifestyle Brands Ltd. and OneSource Specialty Pharma Ltd. will join the BSE Next 500, BSE 250 Microcap, BSE 1000 Multicap Equal Size Weighted (25%), and BSE 1000 indices. Meanwhile, Mangalore Chemicals & Fertilizers Ltd. and Dalmia Bharat Sugar and Industries Ltd will be excluded from the BSE All Cap, BSE Next 500, BSE Smallcap, BSE Fast Moving Consumer Goods, and BSE 1000 Multicap Equal Size Weighted (25%) indices.
The Bombay Stock Exchange (BSE), established in 1875, is India’s oldest stock exchange. Its indices are widely tracked by mutual funds, institutional investors, retail investors, and ETFs, making every inclusion or exclusion significant. These periodic adjustments in the BSE indices indicate which companies are gaining market momentum and which are losing ground.
Here’s the list of the latest changes effective 31st October 2025 👇
Stocks Added to BSE Indices
Index Name | Stock Name | Remarks / Highlights |
BSE 1000 | Aditya Birla Lifestyle Brands Ltd. | Added post strong listing performance; strengthens consumer segment. |
BSE 1000 | OneSource Specialty Pharma Ltd. | Reflects growing healthcare representation. |
BSE 1000 Multicap Equal Size Weighted (25%) | Aditya Birla Lifestyle Brands Ltd. | Expands retail & lifestyle exposure. |
BSE 1000 Multicap Equal Size Weighted (25%) | OneSource Specialty Pharma Ltd. | Adds healthcare balance to the multicap index. |
BSE Next 500 | Aditya Birla Lifestyle Brands Ltd. | Inclusion driven by market cap growth and liquidity. |
BSE Next 500 | OneSource Specialty Pharma Ltd. | New entrant representing pharma innovation. |
BSE 250 Microcap | Aditya Birla Lifestyle Brands Ltd. | New addition to diversify consumer exposure. |
BSE 250 Microcap | OneSource Specialty Pharma Ltd. | Strengthens healthcare and specialty pharma weightage. |
Stocks Removed from BSE Indices
Index Name | Stock Name | Reason for Removal |
BSE All Cap | Mangalore Chemicals & Fertilizers Ltd. | Removed due to amalgamation with Paradeep Phosphates Ltd. |
BSE All Cap | Dalmia Bharat Sugar and Industries Ltd. | Excluded post demerger of refractory business. |
BSE Smallcap | Mangalore Chemicals & Fertilizers Ltd. | Corporate restructuring; delisted post merger. |
BSE Smallcap | Dalmia Bharat Sugar and Industries Ltd. | Excluded from all indices following scheme of arrangement. |
BSE Next 500 | Mangalore Chemicals & Fertilizers Ltd. | Amalgamation-based removal. |
BSE Next 500 | Dalmia Bharat Sugar and Industries Ltd. | Demerger impact; no longer index-eligible. |
What is a BSE Rejig?
BSE rebalances its indices — such as the BSE 1000, BSE Next 500, BSE Smallcap, to ensure the index remains a true and updated reflection of the market.
Why does the BSE indices rebalance or rejig happen?
The rejig is done to ensure that the indices accurately reflect the changing dynamics of the stock market. Over time, new leaders emerge in industries, companies grow, merge, or sometimes lose relevance, new sectors emerge and old ones weaken — and index composition needs to mirror this evolution. By adjusting the list of stocks, BSE ensures that its indices stay relevant and accurate, and represent the most relevant, liquid, and sizeable companies in each category.
How often does it happen?
The BSE reviews its indices semi-annually — typically in March and September. However, special revisions can also occur, when there are major corporate actions such as merger, demerger, amalgamation, or delisting, as seen in this recent rejig.
Key factors considered during review:
Market capitalisation (company’s size and valuation)
Liquidity and trading volumes
Corporate actions like mergers, demergers, or restructuring
Sectoral representation and relevance to index theme
In a nutshell
The latest reshuffle in the BSE indices reflects how India’s market landscape is evolving — with new-age consumer brands and specialty pharma players stepping into the spotlight, while legacy names take a backseat due to corporate realignments.
For investors, these changes aren’t just routine updates, they’re a sneak peek into emerging market leaders. The inclusion of Aditya Birla Lifestyle and OneSource Specialty Pharma signals where institutional money could be flowing next. As always, index rebalancing offers a good reminder to review your portfolio, align with the shifting market dynamics, and stay ahead of the curve. Because in the world of equities, change isn’t just constant; it’s an opportunity.
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