A commodity price shock occurs when the price of a raw material moves sharply in a short period, typically driven by a supply disruption, demand surge, or speculative repricing of risk.
Commodity markets are global and interconnected. Brent crude oil is priced in US dollars on the ICE exchange in London. When that price moves, it affects every country that imports oil, regardless of whether they are involved in the conflict that caused the shock. In the Strait of Hormuz escalation of February–March 2026, Brent surged from $70 to $107.81 per barrel (+54%) in under two months (EIA Short-Term Energy Outlook, March 2026). This affected fuel prices in the Philippines within days, even though the Philippines has no direct involvement in the US-Iran conflict.
Not all commodities behave the same way during shocks. Energy commodities like oil and natural gas tend to spike quickly. Agricultural commodities like wheat and corn move more slowly because existing stockpiles and alternative suppliers can buffer the initial shock. The EIA estimated that the effective closure of the Strait of Hormuz removed approximately 16 million barrels per day of crude oil flow — 80% of the strait’s normal volume (EIA, March 2026).
The concept of a price shock depends on whether a country is a net importer or net exporter. For net exporters like Brazil (soybeans, oil) or Indonesia (palm oil), a commodity price shock can actually be beneficial, increasing export revenues and potentially strengthening the currency. For net importers like Egypt or Pakistan, the same shock is devastating.
Substitution effects can dampen or redirect shocks. When sunflower oil prices spiked due to the Ukraine war, consumers switched to palm oil or soybean oil, causing those prices to rise too. India banned rice exports in July 2023 (WTO notification, 2023) to stabilize domestic prices, but this worsened the global shock for importing countries — particularly in Sub-Saharan Africa.
Speculative trading amplifies commodity shocks in the short run. The Federal Reserve Bank of Dallas estimated that a one-quarter closure of the Strait of Hormuz would raise average WTI prices to $98 per barrel and lower global GDP growth by an annualized 2.9 percentage points (Dallas Fed, Q1 2026).
Sources: EIA Short-Term Energy Outlook (March 2026). Federal Reserve Bank of Dallas (Q1 2026). WTO export restriction notifications (2023). ICE Brent crude futures.