Stagflation May Be the New Base Case-And $100 Oil Is the Risk Investors Are Still Underpricing

Reuters polling shows stagflation moving toward the center

This is no longer a fringe macro call. A Reuters poll showed economists raising inflation forecasts for 39 of 50 major economies this year, while cutting growth outlooks for 32 of them. That is a broad-based shift in expectations, not random noise, and it helps explain why stagflation is moving from the margins into the main debate.

Oil back at $100 is forcing the market test

What changed is that investors can no longer rely on the old "just gasoline" explanation. Oil is back at $100, and Reuters said European gas prices were set for their biggest monthly jump since March as borrowing costs rose on inflation worries. When equities, currencies, and sovereign debt all react to the same energy stress at once, the message is that this is more than a fleeting commodity spike.

The debate is still open. The bull case is that central banks can look through a supply shock if inflation expectations remain contained. The bear case is that this is broader than oil: Bank of America argues the conflict has become an energy shock, with gas and fertilizers widening the damage. That is the fork in the road. If policymakers can keep markets convinced the pressure is temporary, the current calm can hold. If not, repricing in rates, currencies, and risk assets could arrive faster than expected.

Bank of America argues this is an energy shock, not just an oil shock

The main risk is focusing on oil alone. Bank of America's point matters because it changes the transmission channel: this is not necessarily a clean, short-lived gasoline spike that central banks can simply look through. Even if the fighting ends within weeks, their base case still calls a 50 basis point growth hit for the U.S., with growth falling to 2.3% for 2026 while headline inflation rises to 3.6% from 2.8%. That is the pattern investors worry about most: inflation shows up first, growth follows.

Why the shock can spread beyond headline energy

The concern is breadth. The world economy may use less oil per unit of output, but it has become more sensitive to natural gas and fertilizers. That matters because gas is closer to the core of the price chain than headline oil: it affects power, industrial inputs, transport, and food processing. When energy feeds through those markets, businesses face a harder choice than usual-absorb the hit and compress margins, or pass it through and risk weakening demand further.

Reuters also said new U.S. tariffs were likely to raise prices further at a time when energy costs are already spiking. That combination is what makes this feel less like a passing commodity wrinkle and more like a broader inflation and growth shock.

The stagflation sequence investors should watch

This is where anchoring bias can mislead investors. Past oil spikes were often treated as temporary, with the assumption that policymakers could look through them. But if the shock is broad enough to hit gas, fertilizers, transport, and trade costs at the same time, that assumption is no longer a safe default. The risk is that by the time inflation and growth are clearly moving the wrong way together, market repricing is already well underway.

If stagflation gets repriced, duration is where the first break appears

If markets really start pricing stagflation, the first break is not in stock selection. It is in the assumptions underneath every duration trade.

Oil duration matters more than the headline spike

The key variable is simple: how long oil remains above $100 a barrel. If that high-price regime proves brief, markets can keep telling themselves the familiar story-central banks will look through a supply shock, expectations will stay contained, and rising yields will look like noise. That is the bull case, and it is not irrational.

The problem is duration. If elevated energy prices last long enough, investors can no longer separate headline energy from broader price pressure. That is when market psychology can shift from selective optimism to a starker conflict: investors still want bonds to behave like safe havens, but more persistent inflation points the other way. When that conflict resolves, it may not do so gently.

What to watch next

Reuters has framed oil prices remaining elevated as the key market question. For now, the clearest test is whether high energy prices prove transient or persistent. If they are brief, the supply-shock explanation can hold. If they linger, inflation expectations become harder for central banks to contain and the macro outlook gets worse faster.

What would invalidate the call

This positioning view weakens if policymakers restore credibility quickly. That would require a sharper drop in energy prices than markets expect, plus evidence that inflation pressure is narrowing after the recent broad inflation-forecast upgrades. Until that happens, overreaction is just as real a risk as complacency-and in a stagflation scenario, the second wave of repricing is often the bigger one.