The TSX Composite closed at 36,365.42 Thursday, down 36.37 points or 0.10 percent, its lowest close since August 6, as a broad decline across the Big Five banks offset gains in energy and gold-linked names. RBC fell 1.2 percent, TD Bank 1.4 percent, BMO 1.6 percent, CIBC 1.9 percent and Scotiabank 1.5 percent, while Agnico Eagle, Barrick, Franco-Nevada and Wheaton Precious Metals each advanced between 1.8 and 2.8 percent.
The bank weakness traced back to a US Treasury bond market under renewed strain, with 10-year and 30-year Treasury yields resuming their climb after briefly easing on the Treasury Department's debt buyback announcement. WTI crude added 2.09 percent to close at $86.16 a barrel, its highest level since July 24, after President Trump announced a sweeping new package of economic sanctions targeting Iran's financial and shipping channels, layering fresh supply risk onto an already-disrupted Strait of Hormuz.
Retail Names Took the Steepest Hits
Retail was the session's weakest sector by percentage move. Alimentation Couche-Tard fell 2.2 percent, Loblaw 1.3 percent and Dollarama 1.4 percent, tracking a more than 9 percent decline in Walmart shares on Wall Street after the US retailer's second-quarter results missed expectations. The read-through to Canadian retail names is sentiment-driven rather than fundamental, since none of the affected companies report results this week, but it was enough to keep the TSX's overall decline from being limited to financials alone.
What Moved Where: The Cross-Asset Picture
Away from single-name moves, the broader cross-asset picture for the session was consistent: risk assets with a defensive or inflation-hedge character outperformed, while rate-sensitive and consumer-facing names lagged. Gold-linked miners averaged a 2.2 percent gain across the four largest TSX-listed names. WTI's 2.09 percent advance reflected the Iran sanctions news directly. The Canadian dollar strengthened against the US dollar for a second consecutive session, with USD/CAD closing at 1.3794, down from 1.3809 the previous day, a move consistent with the broader two-week strengthening trend the currency has shown heading into tonight's Section 338 tariff deadline.
Today's Session Opens Under the Tariff Deadline
The single largest variable for today's session is not a scheduled data release but a political deadline. The US 50 percent tariff on a range of Canadian goods, paused twice already this month, is due to take effect at the end of the day unless a trade agreement with the United States is finalized. Currency and equity markets have both been pricing resolution over escalation through the past two weeks, and that pricing has not shown signs of reversing into Thursday's close. A finalized deal or a further short extension would likely be met with continued strength in TSX financials and industrials given how much of this month's weakness has already been attributed to trade uncertainty layered onto the bond market story. A late breakdown, particularly one confined to the auto tariff annex where the two sides remained furthest apart earlier this week, would be the session's clearest downside catalyst.
Bank and gold-miner averages are calculated from the five largest TSX banks and four TSX-listed gold miners named in this article. The TSX Composite, WTI and USD/CAD figures are the reported daily closes.