Sensex Crashed 1,124 Points in a Day: What Really Happened

Monday, September 28, 2026, was brutal for Indian investors. The Sensex plunged 1,124.02 points — 1.52% — to close at 72,771.72, its lowest closing level since March 30, 2026. The Nifty 50 fell 360.25 points (1.56%) to 22,780.25, with 47 of its 50 constituents ending in the red. Roughly ₹8 lakh crore of investor wealth was wiped out in a single session.

There was no single trigger. Three pressures that had been building for weeks all got worse over the weekend.

1. Oil surged past $108

Brent crude jumped nearly 4% to $108.3 a barrel after a deadlock in US-Iran talks raised fears of supply disruptions through the Strait of Hormuz — the narrow shipping lane that carries a huge share of the world's oil. Donald Trump said he had rejected an Iranian proposal to reopen the route. For India, the world's third-largest crude importer, expensive oil means a bigger import bill, stickier inflation, and thinner company profits — all at once.

2. US bond yields kept climbing

The US 10-year Treasury yield hovered around 5.2%, near its highest since 2007. When safe American debt pays that much, global funds need a bigger reward to hold riskier emerging-market stocks. That math has been quietly pulling foreign money out of India for most of September.

3. Foreign investors sold, and the rupee slipped

Foreign institutional investors sold Indian equities worth ₹3,693.93 crore in the previous session alone. The rupee weakened 28 paise to 96.03 against the dollar. Selling was broad-based: Nifty PSU Bank was the worst sectoral performer at −3.24%, while midcap and smallcap indices fell even harder than the benchmarks.

Days like this are a reminder that short-term market moves are driven by sentiment and macro forces, not by the long-term health of individual companies. Sharp falls feel scary, but they are a normal — if unpleasant — part of how markets work.