IndiGo’s guardian firm InterGlobe Aviation Ltd. rose 2% on Monday hitting practically three-month excessive as the corporate is ready to enter the BSE, Sensex index changing Tata Motors Passenger Automobiles Ltd.
India’s oldest bourse had revised the constituent checklist within the benchmark 30-share Sensex, which is able to see one main substitute efficient from Dec. 22, 2025, in keeping with an official notification.
BSE’s revision comes within the backdrop of Tata Motors demerger between the passenger car and the business car phase, with the passenger autos inventory named Tata Motors Passenger Automobiles.
Index rejigs are a key occasion for the market as a result of they assist the market members gauge the route through which the funds are shifting. The periodic rebalancing of the Sensex ensures the benchmark index stays consultant of India’s evolving market dynamics.
When an index is re-organised, exchange-traded funds and mutual funds that observe that index carry out a rebalancing train. That is essential for them to re-align their portfolios with the brand new composition of the index.
Basically, the index’s constituents are adjusted to keep up the meant asset allocation proportions or to maintain the general threat stage per the index’s predefined methodology.
The rebalancing exercise normally begins days earlier than the date the modifications are carried out.

