Sensex Gains Rs 5 Lakh Crore in One Session: Five Drivers Behind the Rally

The Sensex jumped 800 points on Tuesday, adding roughly Rs 5 lakh crore in market capitalisation. The rally was broad, with the Nifty Bank index hitting a fresh monthly high and the advance-decline ratio on the BSE approaching 3:1. HDFC Bank and Infosys were among the most actively traded names, though the move lifted nearly every sector.

Economic Times attributed the rally to five factors: a pickup in government spending, strong corporate earnings momentum, a return of foreign institutional buying, stability in crude oil prices, and a liquidity injection from mutual funds. Each of these has been a tailwind on its own. Their convergence on the same session caught traders' attention.

Government spending tends to flow into infrastructure and capital goods, though those sectors were not the day's top gainers. Earnings momentum has been strongest in banking and technology, where several companies reported better-than-expected quarterly numbers. Foreign institutional investors have turned net buyers after a period of selling, and mutual funds continue to see steady inflows from retail investors.

Crude oil stability played a role in reducing macroeconomic uncertainty. Brent crude has held near $70 a barrel, giving India's import-dependent economy breathing room. Lower crude prices help narrow the trade deficit and support the rupee, which in turn attracts foreign portfolio flows. Traders said the oil factor, combined with mutual fund inflows, created a favorable backdrop for risk assets. crude oil profile has been a key input for the market's direction.

The rally in financials suggests the market sees lower risk of a credit event after recent provisioning concerns. HDFC Bank rose 1.8%. AlphaScala's proprietary score for the bank is 47 out of 100, labeled Mixed. HDB stock page reflects that picture. Infosys gained 2.1% and carries an Alpha Score of 57 (Moderate). INFY stock page shows a similar dynamic. Wipro added 1.5% with a score of 46 (Mixed). WIT stock page rounds out the technology trio, though traders said the sector's move was driven by dollar weakness and hopes that the US rate cycle has peaked.

Power stocks like NTPC rose 2.3% on steady demand expectations through summer. The broader market breadth, with nearly three gainers for every loser on the BSE, indicated that the rally was not confined to heavyweights. Small- and mid-cap names also participated, traders said.

The Rs 5 lakh crore wealth addition in a single session historically triggers profit-booking within two to three trading days, several traders said. The sustainability of the rally depends on whether the five factors produce confirmatory data by the end of the week. Monthly derivatives expiry on Thursday and industrial production data due Friday will test whether the breadth is driven by conviction or by short-covering. A few traders noted that the velocity of the move itself creates a risk of reversal if fresh buying slows.