What Happened

On May 17, 2026, geopolitical tensions in the Middle East are escalating to their peak. Iran has announced the imposition of tolls on the Strait of Hormuz, posing a direct threat to the global energy supply chain, and concerns over a prolonged war in Iran are driving up international oil prices daily. U.S. President Trump has maintained a hardline stance, stating that the economic pain from the Iran war is worth enduring, leaving no clear path to resolution. Japan is moving to strengthen its energy security by securing Middle Eastern crude oil through ship-to-ship transfers in preparation for instability in Middle Eastern oil supply and demand, and by preparing for its first LNG imports via the Strait of Hormuz.

Why It Matters

The Strait of Hormuz is a critical chokepoint, accounting for approximately 20% of the world's seaborne oil shipments, and Iran's imposition of tolls can be interpreted as a measure equivalent to a 'quasi-blockade'. This is a severe threat that could lead not only to soaring oil prices but also to a reduction in global trade volume and a paralysis of the entire supply chain. MarketWatch warned that the economic impact of the Iran war could reach up to $300 billion, leading to increased mortgage rates and wage pressures, which would place a significant burden on American households. The key point is the increasing uncertainty that could lead to 'market paralysis' beyond mere oil price hikes. Furthermore, there are projections that rising energy prices could push the 2027 Social Security cost-of-living adjustment (COLA) up to 4.2%, exacerbating widespread inflationary pressures.

Impact on the Korean Market

The deepening geopolitical risks in the Middle East and surging oil prices will directly impact the South Korean economy, which relies on imports for most of its crude oil. First, rising international oil prices will act as upward pressure on domestic inflation, weakening household purchasing power and increasing production costs for businesses. Industries highly dependent on energy, such as refining, aviation, and shipping, may face deteriorating profitability. However, the shipbuilding industry could potentially see a ripple effect from increased orders for energy carriers. Additionally, global supply chain instability will add uncertainty to South Korea's export-oriented economy and could lead to a weaker Korean Won. It is time for the government to make multifaceted efforts to strengthen energy security.

Key Stock Analysis

  • S-Oil (010950) (stock, positive): Rising international oil prices can increase refiners' inventory valuation gains and positively impact refining margin improvements. In the short term, benefits from higher oil prices are expected.
  • Korean Air (003490) (stock, negative): Rising oil prices directly lead to increased aviation fuel costs, severely impacting airline profitability. If the Middle East situation prolongs, there are concerns about weakened competitiveness due to changes in flight routes or increased costs.
  • WTI (commodity, positive): Deepening geopolitical instability in the Middle East and Iran's imposition of tolls on the Strait of Hormuz will amplify concerns about global crude oil supply, exerting continuous upward pressure on WTI oil prices.
  • BRENT (commodity, positive): Similar to WTI, supply risks originating from the Middle East will be a major factor driving up Brent crude prices. Volatility is expected to increase for this global benchmark oil price.
  • HD Korea Shipbuilding & Offshore Engineering (09540) (stock, positive): Deepening energy supply chain instability could lead to increased demand for energy carriers such as LNG carriers and oil tankers. In particular, Japan's exploration of emergency transport methods, including ship-to-ship transfers, raises expectations for new vessel orders.
  • COPPER (commodity, positive): Copper prices have already hit record highs due to AI demand. Rising energy prices from Middle East risks will increase overall inflationary pressures and draw more attention to copper as an inflation hedge and a critical resource for energy transition infrastructure.

Future Scenarios

The situation in the Middle East is expected to show complex dynamics that will be difficult to resolve in the short term. An optimistic scenario involves the easing of tensions in the Strait of Hormuz through international mediation and diplomatic efforts, leading to an earlier-than-expected end to the Iran war. However, a pessimistic scenario involves Iran's hardline stance persisting, with military tensions escalating with Western countries, including the U.S., leading to a full-scale war. This could result in soaring oil prices and a paralysis of the global economic system. Investors should pay close attention to military movements in the Middle East, diplomatic responses from major countries, and whether OPEC+ adjusts crude oil production. Companies should prepare for uncertainty by diversifying supply chains, enhancing energy efficiency, and establishing contingency plans.