The squeeze is at the pump

Petrol prices are doing what the labour market would not. In August the average American pump price hit $4.30 a gallon, up from $3.19 a year earlier, and real average hourly earnings fell 0.3 per cent year on year. The headline story is true enough: inflation is again outpacing pay. What matters for an investor is why, because a squeeze at the pump is a different animal from the inflation that burns a portfolio.

Headline consumer prices rose 3.4 per cent in the year to August, unchanged from July. Look inside and the cause is narrow. Gasoline was up 27.4 per cent on the year, fuel oil up 52 per cent, and diesel hit a record $6 a gallon after the Iran war restricted shipping through the Strait of Hormuz and pushed oil above $100 a barrel. Gasoline alone accounted for more than a third of the whole monthly price increase. This is an energy shock, a war tax imposed on every driver, not a generalised acceleration of prices.

The rest of the index is pointing the other way. Core inflation, which strips out food and energy, eased to 2.4 per cent in August, its lowest since March 2021. Shelter, the biggest household cost, slowed to 3 per cent; food eased to 2.7 per cent. The median worker's nominal wage, tracked by the Atlanta Fed, rose 4.1 per cent. In other words, pay is comfortably beating every price except the one at the filling station. The spiral that frightened markets in 2022 — wages chasing broad inflation — is not present. An energy shock raises the cost of living; it does not, on its own, set pay expectations running.

That distinction matters twice over. First, for who wins and loses among companies. A five-dollar rise in the gallon is a transfer from households to commodity producers: ordinary income flowing out of wallets and into the energy supply chain. The natural casualties are consumer-discretionary businesses whose margins live on money households no longer have to spend; the beneficiaries are energy producers reaping a windfall. An investor who reads a "paycheck squeeze" headline and braces for broad cost-push inflation will mis-target his exposure. The squeeze is concentrated, not general.

Second, for the Federal Reserve — and here is where yields and equity multiples actually react. The Fed faces two inflation rates pointing in opposite directions. Households feel the headline; the core measure it watches is cooling toward target. The trouble is that pump prices shape expectations, and expectations are what turn a supply shock into a wage-price spiral. So the market is divided over whether the Fed, meeting on September 15-16, raises into a shock it cannot fix by raising rates, or holds and trusts the cooling core. J.P. Morgan Wealth Management strategists pencil in a 25-basis-point rate increase; a Reuters poll has a majority of economists expecting a hold; options markets put the odds of a hike near 60 per cent. The rate decision, not the CPI release, is the live variable for prices.

For the retail investor the lesson falls out of the anatomy. Not all inflation is equal: one kind is a transfer of income, the other a policy problem. When the squeeze is at the pump, neither a broad margin shutdown across the economy nor a synchronised higher-for-longer repricing follows automatically — what follows is a reallocation toward the producers at one end of the shock and away from the spenders at the other, with the Fed's handling of expectations the hinge on which both turn.