The Indian stock market opened significantly lower on Monday, July 20, 2026, with both the Sensex and Nifty indices experiencing sharp declines. The market downturn was primarily attributed to escalating geopolitical tensions between the US and Iran over the weekend, coupled with substantial profit booking in the banking sector following Q1 earnings reports.
Market Plunge Details
In early deals, the 30-share BSE Sensex crashed 629 points to 77,522, while the 50-stock NSE Nifty slipped 160 points to 24,172. This fall has pushed the Nifty down 7.39% and the Sensex down 9% for the year to date. Despite the significant index drops, the market capitalization of BSE-listed firms remained relatively flat at Rs 480.66 lakh crore, compared to Rs 480.92 lakh crore on Friday.
Geopolitical Tensions Drive Oil Prices
The somber mood on Dalal Street was largely influenced by reports of US and Iran trading attacks over the weekend. This military escalation in the Gulf region raised fears of supply disruptions on critical shipping routes, leading to a surge in crude oil prices. Brent crude oil prices initially traded near the $85 per barrel mark, later rising over 3% to $84.59 per barrel in early trading, and were cited by experts as spiking above $90 per barrel, posing a significant headwind for the Indian economy.
Banking Sector Sees Profit Booking
Adding to the market's woes, the banking sector witnessed considerable profit booking after major lenders like Axis Bank, HDFC Bank, and Kotak Mahindra Bank reported their Q1 earnings on Saturday. Despite earnings largely meeting estimates, the Nifty Bank index tanked 934 points to 57,586. Among the Sensex constituents, Axis Bank shares slipped 6% to Rs 1249.05, HDFC Bank stock fell 5% to Rs 777.50, and Kotak Bank shares declined 3% to Rs 376.15.
Top Movers and Expert Outlook
Other significant losers included IndiGo, Maruti, and Bajaj Finance, falling up to 5.41%. Conversely, Trent, NTPC, Bharti Airtel, and Tech Mahindra emerged as top gainers, rising up to 2.26%. Shrikant Chouhan, Head Equity Research at Kotak Securities, advised traders to reduce long positions if Nifty moves below 24,200, while VK Vijayakumar, Chief Investment Strategist at Geojit Investments, highlighted rising Brent crude prices as the strongest near-term headwind, warning of negative implications for the rupee and FPI flows if the trend continues.
This sharp decline comes after a strong performance in the previous session, where the Sensex surged 965 points to close at 78,151, and the Nifty advanced 261 points to settle at 24,344.