The S&P/TSX Composite Index rose 0.3% to close at 35,390 on Tuesday, supported by optimism over a potential US-Iran peace deal. US President Donald Trump said at the G7 summit that negotiations with Iran had entered a second stage. Oil prices fell as markets assessed the prospect of renewed supplies, easing concerns about energy-driven inflation and reducing fears of a hawkish shift by central banks. Lower bond yields supported financial stocks and the broader market, with RBC rising 1.1%, while TD Bank and BMO both added 0.7%. Higher gold prices lifted mining shares, with Agnico Eagle gaining 2.6%, WPM advancing 3.6%, and Barrick rising 2.3%. In contrast, lower oil prices weighed on energy stocks, with Canadian Natural down 1.7%, Suncor losing 2.4%, and Cenovus falling 3.2%. Meanwhile, home sales rose 5.5% in May, while home prices edged lower. Investors are now awaiting the US Fed's policy decision on Wednesday, with markets widely expecting interest rates to remain unchanged.