US Iran Conflict Stock Market India: How Crude, FPI Selling and the Rupee Hit Sensex

If you want to understand the US Iran conflict stock market India connection this month, keep your eye on three things: crude, the dollar and foreign selling. On Monday, October 12, the BSE Sensex lost 547.65 points, or 0.76%, to close at 71,924.68, and the Nifty 50 gave up 157.10 points, or 0.70%, to 22,363.35, ET Now reported. By Wednesday, Brent was still near $106 a barrel and foreigners were still selling.

How Monday unfolded on Dalal Street

The Sensex actually opened more than 400 points up, then turned and slid to an intraday low of 71,676.10. India VIX, the fear gauge, jumped over 6% and crossed 15. Brent rose 1.14% to $105.8 a barrel during the session. Both benchmarks closed near their lows as Middle East tension made investors trim equities, said the Financial Express. Defence name Bharat Electronics (BEL) was among the top Sensex gainers. ITC, Tech Mahindra and HUL were at the bottom.

On October 8, Brent had jumped 3.86% to $104.10 after attacks on ships in West Asia, and Business Standard cited reports that the White House had asked for possible military options against Iran. By then, nine attacks on ships in the Strait of Hormuz had been reported in October. That afternoon HPCL was down 4.5% at ₹327, BPCL off 3.75% and Indian Oil 2.75%. InterGlobe Aviation, the company behind IndiGo, fell 3% to ₹4,832.70.

US Iran conflict stock market India: where the pressure comes from

1. Crude and the OMCs. By October 14, Brent was climbing back towards $107, Mint reported. Kaynat Chainwala of Kotak Neo pointed to reports that Tehran plans more strikes on tankers near Hormuz. If petrol and diesel prices aren’t raised, Choice Institutional Equities sees HPCL taking the biggest earnings hit, with IOC and BPCL behind it. Airlines are in the same boat, since jet fuel (ATF) makes up more than 40% of an airline’s operating costs, according to Business Standard.

2. The dollar and FPI selling. With the conflict escalating, the dollar index was trading near 102.5, an 18-month high, Mint noted on October 12. Foreign portfolio investors took ₹44,166 crore out of Indian equities between October 1 and 9, going by NSDL data. That lifts their 2026 selling to roughly ₹3.04 lakh crore, compared with ₹1.66 lakh crore for the whole of 2025, BT India reported. Geojit’s V K Vijayakumar put it bluntly: with the US 10-year yield above 5.2%, selling Indian shares is a “rational” call for FPIs. He pegged the Nifty’s 2026 loss so far at 13.87%.

3. The rupee. Helped by RBI steps against speculation, the rupee gained 93 paise to 95.78 (provisional) against the dollar on October 12, and closed at 95.15 on October 14, CNBC-TV18 reported. The catch, as Religare Broking’s Ajit Mishra said, is that high Brent eats into the inflation relief a firmer rupee would normally bring.

The picture after Wednesday’s close

On Wednesday the Nifty settled at 22,622.70, down 0.44%, and the Sensex at 72,781.89, down 0.34%. Brent was 0.30% higher at about $106, BusinessLine reported. FIIs were net sellers of ₹1,857.44 crore, and DIIs soaked it up with ₹2,670.44 crore of buying. Our FII DII data for October 14 has the full breakdown.

Which stocks feel it, and what could turn it around

While crude stays above $100, we’d expect OMCs, airlines, paints and tyres to keep swinging on every tanker headline. Defence has gone the other way. Alessia Berardi of Amundi Investment Institute likes defence and manufacturing names, and a defence stock index is up more than 16% this year, according to Hindustan Times, citing Bloomberg. A ceasefire would matter. On May 25, hopes of a US-Iran peace deal knocked Brent futures down 5.5% to $97.80, and the Nifty rose 1.32% that day. India imported 88.6% of its crude needs in April-January of FY26, per the government’s Monthly Economic Review cited in the same report, so a lasting fall in oil would help the rupee and company margins alike. For daily moves, keep our Stock Market Today India hub handy, and read our earlier piece on how Brent at $106 hit the Sensex.