The S&P/TSX Composite Index fell 0.6% to close at 35,236 on Wednesday, with losses in banking and mining outweighing gains among energy producers. Oil prices rebounded amid uncertainty over US-Iran negotiations, lifting energy stocks while adding to concerns about persistent energy-driven inflation that pressured credit-sensitive sectors. Most major banks declined, including RBC, down 1.1%, and TD Bank, down 0.9%. Imperial Oil rose 1.1% and Suncor gained 10.7%. Gold prices reversed earlier gains, weighing on mining shares: Barrick fell 1%, Agnico Eagle dropped 1.3% and Franco-Nevada lost 3.8%. First Quantum plunged 15.3% after a Panamanian commission urged the orderly closure of its Cobre Panama mine. The index declined 2.1% for the month.