Why did Sensex fall over 1,000 points from day's high on Monday?

Indian stocks fell sharply on Monday, with the Nifty 50 slipping below 22,400 and the Sensex dropping over 1,000 points from its day's high, amid heavy foreign selling and concerns over the RBI's rupee measures. Foreign investors have sold ₹3.04 lakh crore worth of Indian equities in 2026, while the RBI's dollar window for oil companies added to uncertainty.