New Delhi, May 26 -- Effective 23 June, Sensex, the bellwether index of Asia's oldest exchange, will be sporting a few more grey hairs. A key reshuffle will see the exit of two long-standing constituents: IndusInd Bank, a private sector bank recently embroiled in governance challenges, including accounting discrepancies and suspected internal fraud, and Nestle India, the maker of popular Maggi noodles.

Incorporated in 1994 and 1959 respectively, these companies are making way for even older entrants: Trent (a Tata Group company) and Bharat Electronics, both founded before 1955.

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This half-yearly rebalancing will tip the index's age balance towards more mature companies.

Currently, a...