Benchmark stock market indices experienced their worst session in four years as the Lok Sabha election results unsettled investors on Dalal Street. 

The S&P BSE Sensex plunged by 4,389.73 points, closing at 72,079.05, while the NSE Nifty50 dropped 1,379.40 points, settling at 21,884.50. 

The broader market indices also faced severe losses, with small and midcap stocks suffering from high volatility. India VIX, the volatility gauge, surged by over 23% as investors rushed to book profits. 

Several blue-chip and PSU stocks tanked sharply during the session, contributing to the downturn. Stock market analysts have advised investors and traders to wait for the final election results to emerge and to exercise caution in the coming days. 

The Sensex closed 5.74% lower at 72,079.0, losing 4389.73 points. On the other hand, Nifty ended the day 5.93% lower at 21,884.50 points.