Yield Flows and Oil Spikes: The Real Market Reaction to Middle East Conflict

The market's immediate reaction to the conflict was a direct capital flow into the US dollar, not bonds. The 10-year Treasury yield climbed from 3.96% at the end of February to as high as 4.26% within the first week of fighting. This defied the textbook flight-to-safety narrative, aligning with a historical pattern where yields rise about 60% of the time during US conflicts.

This move was driven by inflation expectations and a 'term premium,' not safe-haven demand. The surge was global, with European bond yields also spiking as investors demanded higher compensation for perceived economic risks. The aggressive bear flattening of yield curves shows front-end yields rising faster, reflecting hawkish monetary policy repricing in response to inflation fears stemming from the conflict.

The bottom line is a shift in capital flows. Money flowed into the dollar, but Treasury yields rose because the conflict ignited fears of higher, persistent inflation. The market is pricing in a more hawkish central bank policy, not a flight to safety.

The Inflation Engine: Energy Price Flows into the Equation

The conflict's direct economic impact is now flowing through energy markets. Crude oil prices have surged over 5% since the escalation, while US gas prices have extended a 36% monthly surge into April. This energy shock is a primary driver of the OECD's forecast for US inflation to hit 4.2% this year, the highest in the G7. The market is pricing in a sustained inflationary pressure that directly challenges central bank mandates.

This pressure is not confined to oil. European natural gas prices have spiked as much as 50% due to supply chain disruptions, amplifying the global inflationary shock. The European benchmark TTF price surged on halts to Qatari LNG production, highlighting the region's vulnerability. This dual spike in oil and gas prices creates a powerful inflation engine, feeding through to consumer costs and business input expenses.

The bottom line is a clear flow of higher energy costs into the inflation equation. This pressure is a key reason why Treasury yields have climbed, as markets reprice the risk of persistent inflation and a more hawkish policy response. For now, the impact is contained, but the energy price flows are a major source of the inflationary risk that is reshaping market expectations.

Catalysts and Risks: What to Watch for Flow Reversals

The key variable for the market's next move is the conflict's duration. Our base case remains robust global growth, but a longer, drawn-out campaign increases the risk of sustained market weakness. The current volatility reflects this uncertainty, with markets flipping back and forth as the situation evolves. For now, the impact is contained, but any damage to critical oil infrastructure could trigger a broader sell-off.

The Federal Reserve's next move hinges on whether inflation becomes entrenched. Current data shows a clear tension: soaring energy prices threaten to push inflation higher, while the same economic uncertainty could eventually weigh on growth. This debate is central to the Fed's dilemma. If inflation expectations unanchor, as they have in the UK, the central bank may be forced into a more hawkish stance, prolonging the yield surge.

Watch for a shift in the yield curve's shape as a leading indicator. The aggressive bear flattening we've seen-where 2-year yields rise faster than 10-year yields-signals a market repricing for hawkish policy. A further steepening of this spread would confirm that near-term rate hikes are the dominant expectation. Conversely, a reversal toward a more normal or even inverted curve would signal a growing fear of economic drag, potentially reversing the current flow into risk assets.