The Globe and Mail reports in its Friday edition that the S&P 500 and Nasdaq rose modestly to post record closing highs Thursday, boosted by an upbeat forecast from Delta Air Lines and a record close for Nvidia, while investors shrugged off President Donald Trump's latest tariffs. A Reuters dispatch to The Globe says Canada's main index also closed at a record high, led by gains for industrials. Delta shares rallied 12 per cent after the carrier forecast third-quarter and full-year profits above Wall Street estimates. The sector rallied, with United Airlines adding 14.3 per cent and American Airlines climbing 12.7 per cent. Nvidia closed above the $4-trillion (U.S.) valuation milestone for the first time. U.S. initial jobless claims for the week of July 5 came in at 227,000, below the consensus of 235,000 in a Reuters poll. The Delta update and "pretty tame" jobless claims reassured investors, said Mark Luschini at Janney Montgomery Scott in Philadelphia. He added that investors are "increasingly desensitized" to the potential threat tariffs pose to inflation and unemployment. The S&P/TSX Composite Index ended up 109.98 points at 27,082.30, eclipsing Friday's record closing high, helped by gains at Air Canada.