The Indian stock market experienced a significant sell-off in October, marking its worst month since the Covid-19 market crash nearly four and a half years ago. The Nifty index suffered considerable losses, with a notable decline driven by foreign investors. On November 4, the Sensex plummeted 650 points to 79,050, while the Nifty dropped to 24,130, weighed down by major stocks like Sun Pharma and Infosys. This market downturn resulted in a market cap erosion of around ₹4.5 lakh crore for BSE-listed stocks. In a dramatic single-session fall, investors lost over Rs 3.5 lakh crore within 15 minutes, and the total market value wiped out reached Rs 7 lakh crore. The Sensex crashed by 1,400 points, leading to a total investor loss of Rs 8 lakh crore. The Nifty also recorded its biggest single-session fall in one month.