Sensex drops 555 points as Brent nears $100 and banks lead the fall

The Sensex fell 555.23 points, or 0.73 percent, to 75,577.58 on 8 September. The Nifty 50 lost 144.05 points, or 0.61 percent, to 23,635.10. That Nifty close was the lowest in three months and landed on weekly expiry. Intraday the Sensex printed 75,553.35, down 579.46 points. All 30 Nifty constituents were weak in one count. Banks and Reliance did most of the damage.

ICICI Bank, Axis Bank, HDFC Bank, Kotak Mahindra Bank and Reliance Industries sat among the large Sensex losers. UltraTech Cement joined them. Bharat Electronics, Adani Ports, Hindustan Unilever and InterGlobe Aviation finished higher. Hindustan Aeronautics rose about 4 percent after the Defence Acquisition Council's 7 September clearances. Nifty Bank dropped 311 points to 56,778. The midcap index gained 130 points to 62,916 in one tally. BSE MidCap Select was up 0.79 percent. Small caps were roughly flat.

The oil number sat over the session. Brent traded near $99 a barrel after Saudi Arabia said Houthi missiles and drones had hit energy sites in the south and wounded 73 people. Nifty Oil and Gas fell 0.77 percent. Private banks and IT were also soft. Nifty Private Bank was off as much as 0.98 percent in one sector table. Nifty IT lost between 0.37 and 0.41 percent. Pharma gained 0.77 percent. Auto was barely up.

Dealers pointed to three familiar pressures at once. Crude near $100 feeds the import bill and the inflation print. Federal Reserve rate-hike talk after U.S. PPI and CPI this week kept IT and rate-sensitive banks heavy. The U.S.-Iran war, now in its seventh month, has made every Gulf headline a risk-off switch. The rupee had already slipped to 94.66 in early trade against the dollar. This was the second straight down day for the benchmarks.

A booming IPO calendar is the quieter drain. Cash that might have sat in the Nifty 50 is being reserved for primary issues, including a widely flagged NSE offer later this month. That does not show up as a single ticker. It shows up as a market that falls on bad oil news and does not bounce on a defence-order headline except in the names directly named.

The session's useful split is large versus mid. Exporters and private banks, which dominate the Sensex, paid for oil and for Fed nerves. Midcaps, less tied to those two prices, closed green. HAL's jump after the DAC list is the exception that proves the rule: stock-specific defence news still works. Index-level news on Hormuz and rates does not.

Wednesday's open will inherit expiry positioning, a Brent print that can gap on any new Saudi or Iranian statement, and the same bank heavyweights. A reader who already saw the 555-point headline needs only the internals. Banks and Reliance down. HAL up. Midcaps up. Nifty at a three-month close. Oil one dollar shy of a round number that Indian importers have been dreading since the Strait tightened.