The Canada stock market came under heavy pressure Thursday as the S&P/TSX Composite Index plunged more than 700 points in midday trading, reflecting a sharp shift in investor sentiment across North America. The index fell to 32,538.71, down 715.48 points (-2.15%), erasing recent gains and breaking decisively below the 33,000 level.

The move marks one of the steepest single-session declines in weeks and highlights growing anxiety over artificial intelligence disruption, tariff uncertainty and renewed volatility in U.S. equities.

TSX Tracks U.S. Markets Lower

Canadian equities closely followed weakness in the United States, where the S&P 500 slipped 1%, the tech-heavy Nasdaq 100 tumbled 1.6%, and the Russell 2000 dropped 2.1%. U.S. industrial and transportation shares also reversed sharply after recent strength.

According to reporting from Bloomberg, investors are increasingly concerned that rapid AI adoption could weigh on legacy earnings models, particularly in hardware, industrial and software-heavy sectors. Technology stocks such as Cisco, Apple and Microsoft led declines in the U.S., adding pressure to global risk assets.

Toronto’s benchmark index mirrored that trend, slipping roughly 1.9% earlier in the session before extending losses past the 2% mark.

Broad-Based Selling Across TSX Sectors

The selloff was not confined to one sector. Industrial, technology, mining and real estate stocks all posted significant losses, confirming a broad risk-off environment.

Technology Under Pressure

Shopify Inc. dropped 9.71% to $144.84, reflecting weakness in high-growth technology names. Constellation Software fell 4.74% to $2,214.09, while Celestica declined 4.83% to $382.44.

Industrials and Logistics Retreat

Industrial heavyweights were among the steepest losers. RB Global sank 11.66% to $136.54, Colliers International slid 10.65% to $157.65, and TFI International fell 8.41% to $156.18. The drop in transport and industrial stocks mirrors weakness seen in U.S. Dow components earlier in the day.

Silver and Mining Stocks Hit Hard

Mining shares also faced heavy selling. Discovery Silver fell 9.28%, Endeavour Silver declined 8.87%, and DPM Metals dropped 8.44%. Precious metals equities often act as volatility plays, and today’s move suggests investors are reducing exposure rather than rotating into commodities.

Real Estate and Energy Weaken

Allied Properties REIT slid 7.79% to $9.35, adding pressure to rate-sensitive real estate stocks. In the energy space, Baytex Energy fell 5.88% while Canadian Natural Resources lost 1.45%, even as crude prices remained relatively stable.

Macro Drivers Behind the Drop

The broader risk tone comes amid uncertainty surrounding U.S.–Canada tariff policy. The U.S. House of Representatives recently voted to roll back portions of tariff measures, and attention is turning toward a potential Supreme Court decision later this month that could reshape trade enforcement authority.

At the same time, labor data offered mixed signals. Initial jobless claims declined, yet continuing claims rose to 1.86 million. Markets initially opened higher before reversing sharply, suggesting that investors are looking beyond headline employment figures and focusing more on structural shifts tied to automation and AI spending.

Small-cap stocks, which had been outperformers earlier in 2026, were also hit, reinforcing the view that this is a broad de-risking phase rather than sector-specific weakness.

Technical Levels in Focus

The 33,000 mark had acted as a psychological support zone for the TSX in recent sessions. Breaking below that level increases the likelihood of a retest of the 32,000 area if selling pressure continues. Trading volumes accelerated during the decline, suggesting institutional participation rather than light retail-driven movement.

Market participants will now turn their attention to Friday’s inflation data in the United States, which could influence expectations around Federal Reserve interest rate policy. Volatility is expected to remain elevated heading into the close and into the final trading session of the week.

For now, Canada’s benchmark index remains firmly in corrective territory, reflecting a synchronized global pullback as investors reassess growth prospects and risk exposure.