Indian benchmark indices opened significantly higher on Monday following news that the U.S. and Iran reached a preliminary peace agreement [1, 2].

The surge reflects a sharp shift in investor sentiment. Markets reacted positively to the prospect of eased geopolitical tensions and the expected reopening of the Strait of Hormuz, a critical global shipping lane [1, 2].

The Bombay Stock Exchange's Sensex rose 1,126.36 points, or 1.49%, to reach 76,654.31 [1]. This jump of over 1,100 points came as the market processed the diplomatic breakthrough between the two nations [2].

Similarly, the National Stock Exchange's Nifty rose 339.25 points, an increase of 1.44%, to 23,962.15 [1]. This movement placed the Nifty near the 24,000 mark [2].

Market breadth remained strongly positive during the opening. A total of 557 shares advanced, while 65 declined, and 40 remained unchanged [1].

Investors have closely monitored the volatility in the Middle East, as disruptions to trade routes typically drive up costs for Indian industries. The preliminary nature of the deal provides a temporary cushion against those risks, signaling a potential period of stability for regional trade.

The Sensex rose 1,126.36 points, or 1.49%, to reach 76,654.31

The immediate reaction of the Indian markets underscores the sensitivity of global trade to instability in the Strait of Hormuz. Because India relies heavily on energy imports and maritime trade, a peace agreement between the U.S. and Iran reduces the risk of supply chain disruptions and oil price spikes, leading to an immediate influx of bullish investor confidence.