---
title: "Oil Prices Surge Past $90, Bond Yields Climb Amid Iran Tensions"
url: https://www.hereplymouth.com/2026/07/20/oil-prices-surge-past-90-bond/
date: 2026-07-20T05:49:41-04:00
modified: 2026-07-20T05:49:41-04:00
author: "Antony Ray"
categories: ["Business"]
site: "HERE Plymouth"
attribution: "HERE Plymouth"
---

# Oil Prices Surge Past $90, Bond Yields Climb Amid Iran Tensions

*Source: [HERE Plymouth](https://www.hereplymouth.com/2026/07/20/oil-prices-surge-past-90-bond/) — July 20, 2026 by Antony Ray*

Brent crude oil prices surpassed $90 per barrel on Monday, July 20, marking the first time the benchmark has reached this level since early June. The surge in oil prices is directly linked to heightened tensions involving Iran and disruptions in the critical Strait of Hormuz shipping lane.

Market reports from Sunday indicated a significant reduction in vessel traffic through the Strait of Hormuz, with only a handful of ships observed transiting the waterway. Compounding the situation, one vessel was reported to be on fire, further exacerbating supply chain anxieties. This disruption has sent shockwaves through energy markets, pushing prices upward.

The impact of the escalating conflict has also been felt in the bond market. Treasury bond futures experienced a decline, and the yield on the 30-year Treasury moved above the 5.0 percent mark. This rise in bond yields reflects investor concerns about inflation, which is often exacerbated by higher energy costs.

Financial markets are now recalibrating their expectations for Federal Reserve monetary policy. Rate futures suggest approximately a 65 percent probability of a Federal Reserve interest rate hike in September. The renewed U.S.-Iran hostilities complicate the existing inflation trajectory, presenting a challenge for policymakers aiming to stabilize prices.

A week-ahead market outlook highlighted the sharp increase in oil prices, which had recently climbed back above $80 before this latest spike. The outlook noted that the renewed hostilities between the U.S. and Iran have created a more complex environment for managing inflation, potentially influencing future economic planning and investment strategies.

The confluence of rising oil prices and increased bond yields underscores the sensitivity of global financial markets to geopolitical events. The situation in the Strait of Hormuz, a vital chokepoint for a significant portion of the world’s oil supply, remains a key factor to monitor for its ongoing impact on market stability and economic forecasts.