InterGlobe Aviation Set to Take Flight in Sensex; Grasim Poised for Next-Gen Market Spotlight

InterGlobe Aviation and Grasim in the Race for Sensex Inclusion in December

As the Sensex prepares for its December rebalancing effective after market close on December 19, market analysts expect InterGlobe Aviation Limited, India’s largest airline operator, to be included in the index. This follows Tata Motors Ltd's demerger of its commercial vehicle business, which has sharply reduced its market capitalization and raised the prospect of its removal from the benchmark.

InterGlobe Aviation's larger market capitalization gives it a stronger edge for inclusion, though Grasim Industries—representing the commodities sector—also remains in the race. Both companies belong to currently underweighted sectors in the Sensex, with commodities representing a larger underweight.

The inclusion of InterGlobe Aviation is likely to attract inflows of around ₹2,850 crore ($342 million), while Grasim’s potential entry could bring around ₹2,526 crore. Conversely, Tata Motors could face outflows of approximately ₹2,232 crore. Market strategists highlight that InterGlobe Aviation’s entry will significantly impact trading volumes in December due to passive index rebalancing activities.

Investors are advised to watch for the official announcement expected four weeks before the December 19 effective date. The rebalancing reflects ongoing shifts in sector representation and market capitalization trends within India’s blue-chip index.

Key Highlights:

InterGlobe Aviation likely to join Sensex in December, replacing Tata Motors.

Grasim Industries remains a strong contender for inclusion.

Tata Motors facing possible exclusion post-commercial vehicle demerger.

Inclusion expected to trigger inflows of around ₹2,850 crore for InterGlobe Aviation.

Grasim’s entry would attract inflows near ₹2,526 crore; Tata Motors may see ₹2,232 crore outflows.

Rebalancing effective after market close on December 19, 2025.

Market impact includes heightened trading volumes and sector weight shifts.

Source: Moneycontrol, Smartkarma, Economic Times, BSE Indices (2025)