TSX Slumps as U.S.-Iran Peace Talks Stall Ahead of Ceasefire Expiration

The S&P/TSX Composite Index closed at 33,808.30 on Tuesday, marking a decline of 551.73 points, or 1.61%, as geopolitical instability in the Middle East weighed heavily on investor sentiment. The downturn follows the collapse of peace negotiations between the U.S. and Iran, with a two-week ceasefire set to expire tomorrow night. Tensions spiked after the U.S. Navy captured an Iranian-flagged vessel, an action Tehran has labeled as 'armed piracy' and a violation of the ceasefire. Iranian state media indicated that the nation would not participate in further peace talks under threat, while U.S. President Donald Trump reaffirmed that the U.S. is in no rush to make a 'bad deal' and declined to extend the current ceasefire. The ongoing blockade of the Strait of Hormuz continues to disrupt shipping, driving oil prices higher and reigniting concerns over global inflationary pressures. This dynamic created a divergence in sector performance; while the energy sector rose 1.89%, the materials sector plummeted 5.39%. On the domestic front, Canadian Prime Minister Mark Carney announced the formation of a new Advisory Committee on Canada-U.S. economic relations. The committee, scheduled for its first meeting on April 27, aims to navigate the upcoming joint review of the Canada-United States-Mexico Agreement (CUSMA). Securing this deal is viewed as critical for Canadian exporters to avoid heavy U.S. tariffs. Market winners were concentrated in energy, with Athabasca Oil Corp and Cenovus Energy Inc seeing gains. Conversely, mining stocks faced steep losses, with Novagold Res Inc and Lundin Gold Inc among the most notable decliners.