Canada's main stock index, the S&P/TSX composite, saw a substantial drop on September 1, 2026, falling by nearly 400 points to 35,891.15 in late-morning trading. This decline was primarily driven by losses in the industrial, technology, and base metal sectors. The index recorded its second consecutive day of falls and traded near a four-week low, effectively erasing gains made over the previous month.

Simultaneously, U.S. stock markets also experienced a downturn. The Dow Jones Industrial Average was down 218.27 points at 52,967.63, the S&P 500 index fell 37.12 points to 7,649.02, and the Nasdaq Composite dropped 203.22 points to 26,167.67. These movements occurred amidst rising global bond yields, with the 10-year U.S. Treasury bonds and Canadian 10-year notes reaching 4.776% and 3.758% respectively, their highest levels since early 2025.

The decline in the TSX was exacerbated by a significant drop in precious metal prices, with gold and silver both falling by over 2%. The materials sector, housing Canadian miners, lost 2.8%, with companies like Barrick Mining, NovaGold Resources, and Equinox Gold seeing declines of 2.5%, 4.5%, and 4.2% respectively. Conversely, higher oil prices provided a boost to energy stocks, which rose 1.5%. The October crude oil contract was up $2.27 at $88.03 per barrel, while the December gold contract was down $65.20 at $4,416.30 an ounce. The Canadian dollar traded at 71.91 cents U.S.

Market sentiment was also influenced by renewed geopolitical tensions in the Middle East, which contributed to the rise in oil prices. Allan Small, senior investment advisor for Allan Small Financial Group with iA Private Wealth, noted that rising bond yields coupled with higher oil prices create a "glass half empty versus half full" scenario, good for energy companies but not for inflation. Investors shifted towards traditionally defensive sectors, with healthcare adding 0.8% and consumer staples gaining 1.2%.

Looking ahead, the Bank of Canada is scheduled to announce its monetary policy decision, with market expectations largely pointing to interest rates remaining unchanged at 2.25%. Employment reports from the U.S. and Canada, due later in the week, are also anticipated to influence central bank policy expectations. Concerns over a potential trade war between the U.S. and Canada, with the U.S. having imposed tariffs on Canadian exports and Canada planning retaliatory tariffs, add further uncertainty to the economic outlook.