Despite cooler-than-expected U.S. personal consumption expenditure (PCE) inflation data, Canadian stocks continued to fall for the third consecutive session on Wednesday as weaker metals prices and continued Canada-U.S. trade tensions kept investors on edge. The S&P/TSX Composite Index plunged by 224 points, or 0.6%, to settle at 35,236, extending the benchmark’s weekly decline to 1.6%.
Even as some shares from the energy and technology sectors saw renewed buying, steep losses in healthcare, mining, and financial stocks kept the broader TSX benchmark under pressure throughout the session.

Top TSX Composite movers and active stocks
First Quantum Minerals (TSX: FM) tanked by more than 15% to $38.23 per share, making it the worst-performing TSX stock. The sharp selloff followed an update on the future of its Cobre Panamá mine. A Panamanian ministerial commission recommended opening formal negotiations with the company to explore a new agreement that could resolve pending international arbitrations and establish terms for the project to move toward an orderly closure, with no possibility of an extension.
Now, First Quantum plans to engage constructively and is awaiting guidance from the Panamanian government on the next steps. The prospect of an eventual closure rather than a long-term restart heightened investor concerns about Cobre Panamá’s future and pressured FM stock.
Curaleaf Holdings, Franco-Nevada, and Stella-Jones also dived by 3.2% each, making them some of the day’s worst-performing TSX stocks.
On the brighter side, Russel Metals, BlackBerry, Aecon, and Telus climbed by more than 3% each, making them the session’s top-performing TSX stocks.
Based on their daily trade volume, Telus, First Quantum Minerals, Canadian Natural Resources, Brookfield, and Ivanhoe Mines were the five most active stocks on the Toronto Stock Exchange.
TSX today
Copper prices fell sharply in early Thursday trading, while crude oil prices extended their gains, creating mixed signals for the commodity-heavy TSX at the open today. While stronger energy prices could support oil and gas stocks, continued weakness in copper may weigh on Canadian miners and limit broader upside.
Canadian investors will also monitor weekly U.S. jobless claims and the ISM manufacturing purchasing managers’ index (PMI) for fresh clues about the strength of the American economy and the interest-rate outlook.
At the same time, the Canada-U.S. trade dispute remains a key source of uncertainty after U.S. President Donald Trump intensified his criticism of Canada following the implementation of new import restrictions on selected Canadian products.
Meanwhile, developments in the U.S.-Iran conflict could add another layer of volatility after Trump reiterated that Washington could either reach a deal with Iran or consider further military action. Any signs of diplomatic progress could ease pressure on global energy markets, while renewed escalation could quickly push crude prices and inflation expectations higher, potentially adding volatility to TSX energy, financial, and other rate-sensitive stocks.