Brent at 106 and Sensex Fall: How Middle East Oil Spike Hit Indian Markets on Oct 12

Monday, 12 October 2026 was a clean example of the Brent crude 106 Sensex link at work. Weekend attacks on Saudi Arabia revived Middle East supply fears, Brent futures climbed about 1.2% to $106.19 a barrel, and Indian benchmarks gave up their early gains to close near the day’s lows. The BSE Sensex settled at 71,924.68, down 547.65 points or 0.76%. The NSE Nifty 50 finished at 22,363.35, down 157.10 points or 0.70%, according to session reports from Financial Express and ET Markets.

Brent crude 106 Sensex: how the Oct 12 session played out

The morning looked fine. Both indices were up as much as 0.6% before the selling started, and it didn’t let up. The Sensex touched an intraday low of 71,676.10, which was 796.23 points, or about 1%, below the previous close, and both benchmarks ended close to those levels. Flows were split. Foreign portfolio investors sold equities worth ₹1,708.5 crore on Monday, while domestic institutional investors bought ₹3,045 crore, per NSE provisional data cited by ET Markets. India VIX, the volatility gauge, jumped over 6% and crossed 15. That was a clear risk-off signal, even though the rupee strengthened nearly 1% to 95.78 against the US dollar in the same session.

Costlier oil swells India’s import bill and stokes inflation worries. So it was no surprise that crude-sensitive names such as IndiGo and Asian Paints each fell nearly 1% with Brent hovering around $106, per CNBC-TV18. Reliance Industries hit a 52-week low and, along with ICICI Bank and Larsen & Toubro, did the most damage to the Nifty. Banks stayed weak too; the Nifty Bank lost 339 points to 54,918.

Sectors, breadth and a split between large and small caps

The heavyweights led the fall. ITC, Tech Mahindra, Hindustan Unilever, Larsen & Toubro and State Bank of India were among the biggest Sensex losers. On the other side, Bharat Electronics, Mahindra & Mahindra, Kotak Mahindra Bank, HCL Technologies and Bajaj Finance ended as top gainers. FMCG, PSU banks and IT were the weak sectors. Media and chemicals held up better, and Nifty Media was among the stronger sector indices of the day.

Away from the frontline, things looked quite different. The Nifty Midcap 100 rose 0.08% and the Nifty Smallcap 100 gained 1.42%, so mid and small caps beat the Nifty 50 on a day the benchmarks fell. We look at that gap in more detail in our midcap vs Nifty divergence wrap for Oct 12. Breadth on the BSE was only slightly positive, with 2,292 stocks advancing and 2,163 declining.

Oil at $106 outweighed the rupee’s bounce

The rupee rebounded nearly 1% to 95.78, helped by the RBI’s special dollar window for oil marketers, but equities didn’t take much comfort from it. With Brent elevated after Houthi-linked strikes on Saudi Arabia, the inflation and current-account worries stayed front and centre. Steady foreign selling and weak cues from Asia added to the pressure; South Korea’s Kospi dropped 3.65%. For the currency side of the same Monday, read our rupee rebound and RBI measures report. And if you want to see how oil-linked names behave when Brent stays above $105, there’s oil-sensitive stocks today.

Some context on the starting point. Friday’s bounce had taken the Sensex to 72,472.33 (up 879.09 points, or 1.23%) and the Nifty to 22,520.45 (up 288.65 points, or 1.30%), and Monday’s oil spike undid part of that recovery. Until crude cools or the Middle East supply risk fades, rallies may keep running out of steam, more so while FIIs stay net sellers.

For the live Sensex, Nifty and flow desk view, use our Stock Market Today India hub. This wrap is for information only and is not investment advice; verify prices on NSE/BSE and the primary sources linked above.