12:25 PM EDT, 10/17/2025 (MT Newswires) -- The Toronto Stock Exchange has dropped near 340 points at midday, with miners, down 3.3%, posting the biggest losses.

Telecoms and industrials are the sole gainers, up 1.2% and 0.4%, respectively.

Investor concerns about U.S. regional banks are stoking a selloff across North America today, along with prodding a rally in bonds.

Rosenberg Research said: "It is the Treasury market rally that is interesting because it is sending a message. It is sniffing out something. Is it President Trump's acknowledgment that we are in an official trade war with China? Is it a gnawing realization that when it comes to the fallout from First Brands, Jamie Dimon is correct on his "cockroach" analogy? Or a combination of the two? The KBW Regional Bank Index was clocked for a -6.3% loss (worst session since last April), closing at a four-month low and back into correction territory (-11.5% from the nearby peak)."

In stocks, Colabor Group ( COLFF ) has plunged 55% to a multi-year low after it reported its third-quarter results and announced that its president and chief executive officer, Louis Frenette, has resigned with immediate effect. Current chief operating officer Kelly Shipway will take over. Colabor ( COLFF ) earlier this week also announced the passing of its chairman, Warren White.

Canaccord Genuity ( CCORF ) is 16% higher amid reports that it is in talks with bidders for its British wealth arm.