The S&P/TSX Composite closed Tuesday at 36,475.92, up 17.59 points, its third consecutive record close. The same session, the Dow Jones Industrial Average fell 184.13 points to 53,791.85, the S&P 500 dropped 24.91 points to 7,745.27, and the Nasdaq Composite declined 159.91 points to 26,445.92.

The split is not noise. It is sector composition doing exactly what it is supposed to do.

Why the Same Day Produced Opposite Results

US indices fell Tuesday as hopes for a near term Strait of Hormuz reopening faded, with technology names leading the decline on renewed doubt that Washington and Tehran can reach a broader resolution. The TSX, carrying a far heavier weighting in energy and materials than any major US benchmark, benefits directly when oil related uncertainty persists rather than resolves. Energy and industrial shares each gained 0.8% Tuesday, the strongest sectors on the index, as crude prices firmed through the session after Iran reiterated it would keep the strait closed until its conditions are met.

Canadian Natural Resources gained 0.7%, Suncor rose 0.9%, Imperial Oil added 0.5%, and Cenovus climbed 0.9%. None of these are dramatic single day moves. Collectively, applied across the TSX's energy weighting, they were enough to carry the index to a fresh high on a day the S&P 500 could not hold its own ground.

The Two Names That Actually Moved

The larger single stock moves Tuesday had nothing to do with oil. Air Canada gained 5.9% after Scotiabank raised its price target on the stock, the single largest move on the index. Brookfield Asset Management rose 4.6% on strong fee revenue growth and a major fundraising update, a company specific catalyst unconnected to the Hormuz story running through the rest of the session.

Major Canadian banks were mixed to lower the same day, a detail that matters for how the index gain should be read. Tuesday's record was not a broad based rally. It was a narrow one, carried by energy, one industrial name, and one asset manager, while the largest weighted financial names in the index did not participate.

Tuesday's session in full, ranked by the size of the move, is below.

TSX TUESDAY MOVERS +5.9% ▲ AIR CANADA SESSION  |  AUGUST 11 2026
Source: Investing.com, Reuters via Yahoo Finance and TradingView, TSX session recap, August 11 2026.  |  hdq.ca

Air Canada led on a Scotiabank price target increase. Brookfield Asset Management rose on fee revenue growth and a major fundraising update, not on energy or Iran related news.

What Wednesday Inherits

The TSX enters Wednesday with a third consecutive record behind it and a US inflation report at 8:30am ET that will move the North American yield curve regardless of what it means for Canadian monetary policy directly. A hot print would likely support the oil driven inflation narrative that has carried Canadian energy stocks higher through the past two sessions. A soft print would remove some of that support, testing whether the TSX's recent strength can hold without the same catalyst that produced it.