Why is market falling today? Sensex drops 600 points, Nifty below 22,600. Key factors behind Rs 5 lakh crore rout

Indian stock markets fell sharply on Thursday, with Sensex dropping over 600 points and Nifty 50 slipping below 22,600 amid expiry-day volatility. The selloff wiped out nearly Rs 5 lakh crore in investor wealth, while broader markets, sectoral indices and market breadth remained firmly negative.