The Hormuz Bottleneck: Why Reopening the Strait Won’t Fix the Supply Chain Overnight

The ongoing conflict in the Middle East has triggered a massive supply shock in the petrochemical sector that is expected to fuel global inflation through the end of 2026. While global attention often focuses on oil and natural gas, Jim Fitterling, Chairman and CEO of Dow, warns that the effective closure of the Strait of Hormuz has blocked nearly 20% of the world's petrochemical capacity. This disruption mirrors the supply chain "unwind" experienced during the COVID-19 pandemic, with Fitterling noting that the recovery will not be instantaneous and could take up to 275 days.

The crisis is intensifying a "K-shaped" economic divide, creating a stark contrast between the Eastern and Western hemispheres based on their primary chemical feedstocks. Petrochemical plants in the United States and the West largely utilize natural gas-derived ethane, which remains insulated from the conflict. In contrast, facilities in Asia and Europe rely on crude oil-based naphtha. Because roughly half of Asia’s naphtha supplies must pass through the Strait of Hormuz, many Asian plants have already declared force majeure and slashed production. As Kurt Barrow of S&P Global explains, while consumers haven't seen the full impact on retail shelves yet, the potential for widespread shortages is high because "chemicals go into everything," from construction materials to consumer goods and the aerospace industry.

Logistical bottlenecks further complicate the recovery. Even when the Strait eventually reopens, the backlog will be cleared with a strict priority system. With over 300 oil tankers among the hundreds of stranded vessels, energy and food supplies like fertilizer will be prioritized first. Petrochemicals, which are lower on the list, face an additional four-week transit time to reach Asian markets. This bottleneck has caused the price arbitrage between U.S. and Asian petrochemicals to skyrocket from the typical $500 per metric ton to over $1,200.

While the U.S. petrochemical industry finds itself in an advantageous position—running plants at full capacity to capture higher margins—the global spare capacity is insufficient to fill the void. For companies like Dow, which has seen its stock rise nearly 70% this year, the volatility remains a major concern. The inflationary pressure from these spikes threatens to stall economic growth by potentially forcing interest rates higher, which would dampen sectors like housing. Ultimately, the industry is navigating "off the charts" volatility, where the primary challenge is managing a two-speed economy defined by geopolitical instability and a widening gap between those with access to raw materials and those without.