Monday’s decline was modest in index terms but more consequential beneath the surface.

Monday’s decline was modest in index terms but more consequential beneath the surface. The S&P 500 fell 0.5% to 7,745.06, the Dow lost 0.5%, the Nasdaq 0.3%, and the Russell 2000 0.4%. The market remains close to record highs, but today’s combination was less comfortable than…

Monday’s decline was modest in index terms but more consequential beneath the surface. The S&P 500 fell 0.5% to 7,745.06, the Dow lost 0.5%, the Nasdaq 0.3%, and the Russell 2000 0.4%. The market remains close to record highs, but today’s combination was less comfortable than Friday’s: oil rose sharply, the long end of the Treasury curve sold off even as the dollar weakened, and neither small caps nor the broader market escaped the decline.

The day’s most important change was that the energy shock became harder to treat as a geopolitical abstraction. Brent settled at $90.87 and WTI at $84.50 as Hormuz traffic remained extraordinarily constrained. More important for the inflation transmission, the U.S. diesel crack spread exceeded $100 a barrel for the first time. That is the point where the oil story begins to migrate directly into freight, agriculture, industrial costs and ultimately consumer prices.

At the same time, U.S. manufacturing supplied a counterweight to Friday’s weak consumer data. The Empire State manufacturing index jumped to 20.6, its strongest reading in four years. The economy therefore does not look uniformly weak: household demand has softened, while at least one timely industrial survey is accelerating. The Fed’s problem is becoming less about choosing between growth and inflation and more about an economy sending conflicting signals while energy threatens to reintroduce price pressure.