The S&P/TSX Composite Index traded slightly lower around 36,500 on Tuesday as rising global bond yields and persistent Middle East uncertainty weighed on sentiment. Oil prices advanced after hopes for a U.S.-Iran peace deal faded, reviving concerns that higher energy costs could feed inflation and keep rate pressure elevated. Higher yields hit rate-sensitive parts of the market, with RBC and TD Bank down nearly 1% each and BMO, Scotiabank and CIBC off more than 0.5%. Mining shares also weakened as gold prices slipped, sending Barrick down about 0.5%, Wheaton Precious Metals fell nearly 2%, and Franco-Nevada dropped more than 1%. NexGen Energy slid 3.5% after CEO Leigh Curyer said the company is sharing information and talking regularly with BHP about the Rook I mining project in Saskatchewan when asked about a potential equity stake. Economic data added another note of caution after home sales rose less than expected in July. Investors were also watching trade risk, with Canada facing a new round of 50% U.S. tariffs this week as negotiators remained far from a draft trade deal.