Indian equities witnessed a historic trading session today, February 3, 2026, as the benchmark Sensex skyrocketed 2,073 points to settle at 83,739. This 2.54% surge represents one of the strongest single-day gains in recent history, primarily fueled by the finalization of a landmark trade deal between India and the United States. The broader Nifty 50 mirrored this optimism, jumping 640 points to close above the 25,700 mark. The rally added more than 12 lakh crore to the market capitalization of BSE-listed firms, taking the total valuation to approximately 467.20 lakh crore. The primary catalyst for this surge was the announcement that Washington would slash reciprocal tariffs on Indian goods to 18%, down from previous levels as high as 50%. In exchange, India has agreed to halt Russian oil purchases and lower trade barriers on US exports. This pivot in trade policy triggered a broad-based buying spree across all major sectors. Market momentum was particularly evident in frontline stocks, with several BSE 100 constituents reaching fresh 52-week highs. Adani Ports emerged as a standout performer, soaring 9.1% following an upgrade to its earnings forecast. Other major gainers included Bajaj Finance, which rose 6.7%, and Power Grid, up 4.7%. Sector-specific performance was dominated by export-oriented industries and financials. The Nifty Bank index hit a record high during intraday trading, gaining over 5% at its peak. High-beta sectors such as Realty and Auto also saw gains exceeding 3%, while the textile and gems and jewellery segments sparked on the news of lower US tariffs. Technical indicators remain overwhelmingly bullish. Several heavyweights, including Reliance Industries and ICICI Bank, closed above key resistance levels. Market breadth was significantly positive, with approximately 3,259 stocks advancing against 848 declines. The Indian rupee also benefited from the shift in sentiment, appreciating 119 paise to 90.30 against the US dollar. Analysts anticipate that the removal of trade-related uncertainty will lead to a sustained return of foreign institutional investors (FIIs), who were net buyers of shares worth over 5,200 crore today. Current trends suggest that these breakouts in frontline stocks serve as a positive technical signal for continued upside. With global cues turning supportive and domestic earnings remaining resilient, the market appears positioned for further gains in the coming sessions.