Iran blockade, crude spike hit Sensex, Nifty; IT stocks lead losses

Indian equities opened lower Tuesday as renewed U.S.-Iran military tensions sent crude oil prices sharply higher, pressuring sentiment across sectors. The BSE Sensex, which closed at 77,616.40 on Monday, opened at 77,272.34 and was trading at 77,144.02, down 472.38 points or 0.61 percent, as of 9:17 a.m. The NSE Nifty50, which ended the previous session at 24,211.00, opened at 24,068.00 and was last seen at 24,101.55, down 109.45 points or 0.45 percent.

The selloff followed a weak overnight session on Wall Street, where the Dow Jones Industrial Average fell 0.3 percent, the S&P 500 lost 0.8 percent, and the Nasdaq declined 1.6 percent. The trigger was President Donald Trump's reinstatement of a naval blockade on the Strait of Hormuz, with a proposed 20 percent levy on cargo transiting the waterway aboard non-Iranian ships. Brent crude surged to around $84–$85 a barrel on the news. Shipping through the strait fell nearly 60 percent, with only 14 vessels transiting on Sunday compared to 37 the previous week.

"The escalating Iran conflict is testing whether the stock market's broad-based growth can hold, and the market will have to balance the positive of corporate earnings strength with the negative of geopolitical risks," said Vikram Kasat, Head Advisory at PL Capital.

The Indian rupee also came under pressure, depreciating 30 paise to close at 95.62 against the U.S. dollar in the previous session, reflecting India's vulnerability as a major crude oil importer.

"There are some headwinds blowing again which might impact the Indian market in the near-term. The escalation of tensions in the U.S.-Iran conflict has pushed Brent crude to $84. If this spike continues it will again start impacting India's macros. The BoP vulnerability and the potential impact on the rupee can again become issues that may impact the market adversely," said Dr. V.K. Vijayakumar, Chief Investment Strategist at Geojit Investments Limited.

Adding to the pressure, India's retail inflation rose to 4.38 percent in June from 3.93 percent in May, breaching the Reserve Bank of India's 4 percent target, driven by higher food and transport costs. The U.S. 10-year Treasury yield also spiked to 4.61 percent, raising concerns about foreign portfolio investor outflows from emerging markets including India.

"Given these headwinds, investors have to exercise caution. In this fast changing geopolitical and economic environment, investment decision-making is becoming extremely challenging," Dr. Vijayakumar added.

Among Nifty50 losers, HCL Technologies fell the most, dropping 3.11 percent to ₹1,183.20, despite the broader IT sector recovering last session on the back of better-than-expected Q1 results. Shriram Finance slid 2.28 percent to ₹1,024.20, while IndiGo declined 2.05 percent to ₹5,122.50. Bajaj Finance dropped 1.91 percent to ₹1,003.10, and Mahindra & Mahindra shed 1.48 percent to ₹3,113.50.

"IT stocks are bouncing back from low levels helped by low valuations and better-than-expected Q1 results from TCS and HCL Tech. This appears to be a short-term tactical trade," Dr. Vijayakumar noted.

On the gaining side, metals and energy stocks offered some relief. Hindalco Industries rose 1.26 percent to ₹979.00, while ONGC gained 0.76 percent to ₹250.33. Tata Steel was up 0.66 percent to ₹188.34. Max Healthcare added 0.60 percent to ₹1,112.80, and Coal India edged higher by 0.58 percent to ₹432.70.

Technically, the Nifty finds itself in a tight trading band. "We believe the 20-day SMA or 24,000/77,000 will act as a key support zone for short-term traders. As long as the market trades above this level, the uptrend wave is likely to continue. On the upside, 24,275/77,800 could act as immediate resistance for day traders," said Shrikant Chouhan, Head Equity Research at Kotak Securities.

Ponmudi R, CEO of Enrich Money, flagged that crude oil prices above $80 a barrel combined with rising domestic inflation create a compounding risk. "A decisive and sustained move above this range would confirm a bullish breakout, strengthening positive momentum and opening the door for a potential rally towards the 24,500–24,600 region," he said, referring to the 24,300–24,400 resistance zone on the Nifty.

Markets will closely watch crude oil movements, further developments in the Middle East, U.S. Federal Reserve Chairman Kevin Warsh's first congressional testimony, and the upcoming U.S. Consumer Price Index and Producer Price Index readings due Tuesday and Wednesday, which will provide direction on the rate cut trajectory.