India's benchmark BSE Sensex experienced a brief, sharp decline during Thursday's closing auction, plunging approximately 3% in a 20-minute window. The index dropped to 74,983.19 points, 2.9% below the 77,182.91 close of continuous trading, before recovering to close 0.7% lower for the day. The volatility highlighted ongoing concerns regarding thin liquidity and potential manipulation during the closing session.

Market analysts attributed the movement to the unpopular nature of the auction mechanism, which saw heightened activity despite efforts to stabilize pricing. The BSE building in Mumbai remained the focal point of trading activity as the index navigated the turbulent period.