Treasury Selloff Intensifies as Oil Geopolitics Test Stock Rally

Summary

• Oil prices jumped close to $90 as attacks on shipping dent hopes for Strait of Hormuz reopening in August 2026.
• US Treasury yields rose to 2026 highs with two-year notes climbing 6 basis points amid the bond selloff.
• U.S. GDP growth of 1.5 to 2.0% expected for 2026 assuming contained Middle East tensions and resilient consumer spending.

Oil prices surged toward $90 per barrel in August 2026. Attacks on shipping in the Middle East cast doubt on any quick reopening of the Strait of Hormuz. This spike comes with a sharp rise in US Treasury yields to their highest levels of the year.

It creates fresh headwinds for the stock market rally. The combination of higher energy costs and elevated borrowing rates tests investor assumptions built on steady growth.

"Oil prices have jumped as attacks on shipping in the Middle East cast doubt on the Strait of Hormuz reopening."

, Al Jazeera (Source)

Context

Iranian demands escalated geopolitical tensions around the Strait of Hormuz in 2026. They cloud prospects for resumed tanker traffic. The strait remains a critical chokepoint for global oil supply.

Recent disruptions mark one of the largest energy shocks in recent years. US bond markets saw yields climb to levels last seen in 2007.

The selloff reflects inflation concerns tied directly to the oil spike rather than broader economic overheating.

Details

Oil prices rose as tanker attacks dented hopes for a swift resolution. They pushed the international benchmark near $90. The largest-ever monthly increase in oil prices had already occurred earlier in March 2026.

This underscores the scale of the supply disruption. US Treasury yields reached 2026 highs. Two-year notes climbed about 6 basis points on Thursday alone.

Analysts link the move to oil-driven inflation fears that complicate Federal Reserve policy expectations. J.P. Morgan projects U.S. GDP growth between 1.5% and 2.0% for 2026 under the assumption that Middle East tensions stay contained.

The forecast hinges on continued consumer resilience and strong AI-related capital spending.

Outlook

Markets will watch whether oil prices stabilize or if further shipping incidents widen the supply shock. Treasury yields remain sensitive to incoming inflation data through the rest of 2026.