Sensex Plunges 813 Points as Brent Crude Crosses $100; Dalal Street Investors Lose ₹4.05 Lakh Crore in 3 Days

Indian benchmark equity indices Sensex and Nifty recorded their steepest single-day decline of the week on Wednesday, extending losses for the third consecutive session as Brent crude breached the psychological $100 per barrel mark following escalated US-Iran military confrontations near the Strait of Hormuz.

The BSE Sensex plummeted 813 points, or 1.07%, to close at 74,764.12, while the broader NSE Nifty 50 dropped 204 points, or 0.86%, to end at 23,431.70. Across the three-day losing streak starting Monday, the Sensex has shed 1,751.31 points and the Nifty has lost 466 points, wiping out approximately ₹4.05 lakh crore in BSE total investor market capitalisation.

Top 5 Stock Laggards Across the Three-Session Fall

The sustained selling pressure across the three sessions hit technology exporters, raw material-sensitive firms, and private banking heavyweights hardest. Within the Nifty 50 index, five companies recorded the steepest cumulative losses between Friday's close and Wednesday:

• Infosys: Down 4.85% as global rate concerns and foreign institutional selling weighed on software exporters.

• HCL Technologies: Down 4.20% amid broader profit-taking across the IT sector.

• Asian Paints: Down 3.95% over heightened input cost fears driven by surging crude derivative prices.

• Tech Mahindra: Down 3.80% following persistent weak sentiment across technology counters.

• ICICI Bank: Down 3.45% as private lenders faced aggressive foreign fund outflows.

Crude Above $100 Sparks Imported Inflation Concerns

The immediate catalyst behind Wednesday's sharp sell-off was the surge in global crude prices. International benchmark Brent crude futures jumped as high as $100.95 a barrel after military strikes involving US forces, Iranian naval units, and regional militant groups restricted commercial vessel transits through the Strait of Hormuz—the maritime route responsible for one-fifth of global daily oil consumption.

Because India imports over 85% of its domestic crude oil requirement, sustained prices above $100 a barrel threaten to widen the nation's Current Account Deficit (CAD), weaken the Indian Rupee—which opened lower at 94.87 against the US Dollar—and transmit imported cost pressures across transport and manufacturing sectors.

"Elevated crude oil prices remain the primary macro overhang for domestic markets. Sustained levels above $100 per barrel risk reigniting inflationary pressures, squeezing corporate profit margins, and narrowing the scope for near-term monetary easing," said Hariselvan Radhakrishnan, Chief Executive Officer at HST Wealth.

Sectoral Drag and FII Capital Outflows

In addition to rising commodity prices, domestic equities faced continued pressure from Foreign Institutional Investors (FIIs), who remained net sellers across early September sessions. Foreign funds shifted capital toward US Dollar assets and safer yield instruments as global market volatility increased.

Consumer goods, paint manufacturers, and aviation stocks faced severe margin compression worries due to higher raw material and fuel input costs, while Reliance Industries slipped nearly 1%. Bucking the broader market trend, defensive sectors like metals and state-owned power producers witnessed selective buying interest, with NTPC, Adani Ports, and Larsen & Toubro featuring among the few large-cap gainers.

Market analysts also pointed to domestic liquidity dynamics as a secondary driver. A surge in mainboard Initial Public Offerings (IPOs) opening for public bidding this week diverted short-term institutional and retail cash flow away from secondary market equities, accentuating intra-day price corrections.

Without a visible diplomatic de-escalation in the Persian Gulf to ease maritime transit through Hormuz, market strategists anticipate near-term equity benchmarks will remain range-bound and vulnerable to global energy price shocks.