TSX Slides as Geopolitical Tensions Weigh on Materials Sector

The Canadian benchmark S&P/TSX Composite Index retreated into negative territory on Tuesday, closing down 356.93 points, or 1.04%, to settle at 34,003.10. The decline was primarily driven by a steep correction in the materials sector, which offset gains seen in energy equities. Market sentiment was dominated by uncertainty surrounding the US-Iran ceasefire, which is set to expire on Wednesday. While Pakistan is reportedly coordinating a second round of diplomatic talks in Islamabad, the outcome remains uncertain. U.S. President Donald Trump expressed optimism for a 'great deal' but explicitly noted that the military is prepared to resume bombing operations should the ceasefire lapse. The Materials Capped Index plummeted 3.7%, with several gold and mining firms including G Mining Ventures, Novagold Resources, and Iamgold Corp. seeing losses between 5% and 7.5%. Conversely, the energy sector showed resilience, with companies such as Cenovus Energy and Whitecap Resources gaining between 1.3% and 2.5%. In the corporate space, AtkinsRéalis Group Inc. shares fell 2.5% following the announcement of its acquisition of Wallbridge Gilbert Aztec (WGA). The move is intended to expand the firm's infrastructure footprint in Australia and New Zealand, adding 800 professionals to its workforce. The combination of geopolitical fragility and sector-specific volatility has left traders in a defensive posture, with the materials sector bearing the brunt of the risk-off sentiment.