What Caused the Drop in Indian Stock Markets Amid Rising Oil Prices?

The Indian stock market faced a downturn as benchmark indices Sensex and Nifty fell amid rising crude oil prices and geopolitical tensions from US military actions in Iran. The BSE Sensex dropped by 479.26 points, while the NSE Nifty decreased by 118 points. Key players like Bharti Airtel and Tata Consultancy Services saw significant losses, while Tech Mahindra and Maruti gained. The surge in Brent crude prices raised concerns about inflation and fiscal stress in an oil-import-dependent economy like India. This article explores the market's reaction to these developments and the implications for investors.

By Narendra Chaudhary May 26, 2026, 16:27 IST

Market Overview

Mumbai: On Tuesday, the benchmark indices, Sensex and Nifty, experienced a downturn in a volatile trading session, primarily influenced by a surge in crude oil prices following reports of renewed US military actions in southern Iran.

The BSE Sensex, comprising 30 stocks, fell by 479.26 points, or 0.63%, closing at 76,009.70. At one point during the day, it had dropped by 579.28 points, or 0.75%, reaching 75,909.68.

Similarly, the NSE Nifty, which includes 50 stocks, decreased by 118 points, or 0.49%, finishing at 23,913.70.

Among the major losers on the Sensex were Bharti Airtel, Trent, Tata Consultancy Services, Bajaj Finance, Titan, and HDFC Bank.

Conversely, Tech Mahindra, Eternal, Maruti, and Adani Ports managed to gain.

Brent crude, the global oil benchmark, saw an increase of 2.93%, reaching USD 98.96 per barrel.

US President Donald Trump mentioned on Monday that negotiations with Iran aimed at resolving the conflict were progressing well, although officials indicated that a final agreement might take time due to the complex communication channels used by Tehran to consult with its supreme leader.

"Initially, the markets showed stability due to easing crude oil prices and positive global cues. However, sentiment shifted dramatically after news of new US military strikes in Iran, dampening hopes for a quick de-escalation in the region. This sudden change in geopolitical sentiment led to a risk-off approach across global markets and raised concerns about potential energy supply disruptions," explained Hariprasad K, Research Analyst and Founder of Livelong Wealth.

He further noted that the sharp rise in Brent crude prices has once again put pressure on Indian equities.

"For an economy like India, which relies heavily on oil imports, increasing crude prices reignite worries about imported inflation, currency instability, and growing fiscal challenges," Hariprasad added.

In the Asian markets, South Korea's Kospi index closed higher, while Japan's Nikkei, Shanghai's SSE Composite index, and Hong Kong's Hang Seng index ended lower.

European markets were predominantly trading in the red.

"The near-term optimism regarding a potential peace deal between the US and Iran has significantly diminished following reports of US military operations in southern Iran, leading to a spike in crude prices and reversing the rupee's brief gains," stated Vinod Nair, Head of Research at Geojit Investments Limited.

US markets were closed on Monday in observance of Memorial Day.

According to exchange data, Foreign Institutional Investors (FIIs) purchased equities worth Rs 821.75 crore on Monday.

In the previous trading session, the Sensex had surged by 1,073.61 points, or 1.42%, closing at 76,488.96, while the Nifty had risen by 312.40 points, or 1.32%, to finish at 24,031.70.