No single law created it and no single name describes it. On the day markets close for Civic Holiday, a look at how a nineteenth century municipal habit became a coast to coast tradition, and where the TSX stood heading into the break.

A week spent showing Hormuz traffic recovering and the Bank of Canada holding steady ended with tanker strikes, a 19-year Treasury yield high, and a TSX decline that tracked neither.

On July 8, twenty-one days after the memorandum that defined June, the United States and Iran resumed open conflict. WTI round-tripped from a five-month low back above eighty-five dollars, Warsh's Fed sent long yields to a nineteen-year high, and the Strait of Hormuz closed the month at its worst traffic reading of the war.

The TSX, the S&P 500, oil and the Canadian dollar all finished higher Friday. Gold, the number both the Behavioural and Tax and Wealth Desks led with this morning, was the exception, and the vessel data the Geopolitical Desk cited as evidence of calm reversed just as fast.

The index recovered less than half of Wednesday's drop. Energy split on earnings instead of oil, and technology produced the widest spread on the board, a 6.9% winner and a 12.8% loser on the same day.

The S&P/TSX Composite closed at 35,333.78, down 415.92 points a day after its record high. Canadian Natural and Cenovus both rose more than 4.5 percent on the same session TD and RBC fell more than 3, and that split is the story going into Thursday.

Fourteen TSX names moved more than a percentage point on Wednesday's session, eight of them lower. In a non-registered account, that is a planning opportunity with a specific 30 day rule attached to it, and it does not wait for December.

The Fed's split decision and a fresh round of strikes on Iran sent the TSX down 415 points in an afternoon. Less than eighteen hours later, the fear that drove the selling was already fading, and that gap is where the research says money gets lost.

Every conventional signal today read hawkish: stocks fell, yields rose, volatility spiked. The one market that actually prices the Fed's next move went the other way.

Celestica surged 9.5% and Constellation Software jumped 6.4% as the TSX closed at a third straight record Tuesday, while Cenovus and the gold miners lagged. Overnight, WTI reversed hard on Iran's missile attack, flipping the exact sector split that built Tuesday's record.

WTI posted its sharpest single-session decline since February, yet the TSX Composite closed higher, lifted by easing bond yields that helped financials and rate-sensitive names outrun energy's drag. Wednesday's Fed decision determines which side of that divergence keeps winning.

WTI fell more than eight per cent Monday, its sharpest single session drop since the Strait of Hormuz disruption began in February. Gold, which has traded as the same war premium trade for five months, barely moved. The Fed's Wednesday decision was already repriced by the gap between them.

Oil's sharpest single session drop in weeks is pulling gold, bonds, and equity futures in the same bullish direction for a different reason. The TSX Composite, which closed Friday at 35,369.10, faces its steepest test of the sector rotation this month when energy names open.

Between Wednesday's TSX record and Friday's oil reversal, a bigger story took shape: the Federal Reserve and the Bank of Canada are now pulling in opposite directions, and a fifty percent tariff lands in the gap between their next two decisions.

A third oil chokepoint opened overnight in Kazakhstan and WTI fell almost five percent anyway, on reports that Pakistan and China are trying to revive US-Iran talks. The ten year Treasury yield did not move off Thursday's cycle high, and that gap is the story heading into next week's Fed decision.

The TSX fell 0.82% a day after a record close, as oil past $100 lifted energy but hit yield-sensitive banks. Energy and utilities were the only sectors to gain.