Shares of InterGlobe Aviation Ltd., the parent of IndiGo, fell as much as 9% on Monday, December 8, after multiple brokerages flagged rising operational and cost pressures at India's largest airline. This is the stock's worst single day drop since February 2022.

IndiGo shares are now on a seven day losing streak, erasing nearly ₹36,000 crore in market value during this period.

Investec maintained its 'Sell' rating on the stock with a price target of ₹4,040, warning that hopes of a strong third quarter recovery are diminishing after a weak first half of FY26.

The brokerage said aviation turbine fuel prices have risen 6% quarter on quarter, while the rupee has slipped to a new low of 90 per dollar, adding to the airline's cost burden.

The recent wave of large-scale flight cancellations,

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