The Nifty surged to a new 2025 high of 25,103 on Monday, buoyed by strong domestic macro signals and hopes of progress in US-China tariff talks. The Sensex rose 256 points to 82,445, while mid- and small-cap indices outperformed. A weak US dollar lifted the rupee and gold, with Brent crude holding steady near $66.6 amid trade deal optimism.