Oil prices rose, while US stocks weakened Tuesday

US stocks were weakening on Tuesday in their return to trading from a three-day weekend after the latest fighting in the war with Iran pushed oil prices higher. The S&P 500 fell 0.4 per cent. The Dow Jones Industrial Average was down 520 points, or 1 per cent, as of 10 a.m. Eastern time, and the Nasdaq composite was 0.3 per cent lower.