Stock market today, Sept. 1 -- Indian benchmark indices, Sensex and Nifty, opened higher on Monday, supported by stronger-than-expected June-quarter GDP figures and a U.S. court decision declaring most of President Donald Trump's tariffs illegal, though keeping them effective until mid-October.

The BSE Sensex rose 333.94 points, or 0.42 per cent, to start at 80,143.59, while the NSE Nifty gained 84.45 points, or 0.35 per cent, to open at 24,511.30.

Investor sentiment was boosted by India's April-June GDP growth of 7.8%, surpassing expectations. However, analysts warned that rising U.S. tariffs might impact business activity in the upcoming quarters.

Meanwhile, a split U.S. appeals court declared that most tariffs imposed during former ...