Stock Markets March 18, 2026

Asian equities slip as BOJ keeps rates steady and warns of oil-driven inflation risks

Tokyo leads declines after Bank of Japan pauses tightening; surging Brent and Middle East tensions weigh on regional markets

By Caleb Monroe
Asian equities slip as BOJ keeps rates steady and warns of oil-driven inflation risks

Asian stock markets fell broadly as the Bank of Japan held its short-term rate at 0.75% and highlighted rising uncertainty around inflation amid a sharp rise in oil prices and escalating conflict in the Middle East. The BOJ decision, a hawkish tilt from the Federal Reserve and a jump in Brent crude above $110 a barrel combined to sap investor risk appetite across the region.

Key Points

  • BOJ held its short-term policy rate at 0.75%, pausing tightening while flagging imported inflation risks from rising oil prices and geopolitical shocks.
  • Japan’s equity benchmarks led regional declines - Nikkei 225 down 2.6% and TOPIX down 2% - as energy import exposure raises concerns about domestic inflation.
  • Brent crude surged past $110 a barrel amid attacks on energy facilities in the Middle East, amplifying fears of supply disruption through the Strait of Hormuz and weighing on risk sentiment across Asian markets.

Asian bourses retreated on Thursday, with Japan’s benchmarks recording the deepest losses after the Bank of Japan elected to keep its short-term policy rate unchanged and explicitly signalled that higher oil prices and the intensifying Middle East conflict add uncertainty to the inflation outlook.

Regional markets weakened after a retreat on Wall Street overnight that followed a hawkish message from the Federal Reserve; futures tied to U.S. stocks were largely unchanged through Asian trading hours.


BOJ decision and internal dissent

The Bank of Japan left its short-term policy rate at 0.75%, a move that was widely expected by market participants. Policymakers described the choice as a pause in tightening while they evaluate the impact of imported inflation and other external shocks. In its communique, the board warned that the future trajectory of the Middle East conflict and movements in crude oil prices could materially influence Japan’s inflation path, a particular concern for a country that relies heavily on energy imports.

One board member dissented. Hajime Takata preferred a 25 basis-point rise, highlighting that some officials see a need for a firmer policy response if price pressures persist.


Market moves across the region

  • Japan’s Nikkei 225 fell 2.6% and the broader TOPIX index slid 2%.
  • South Korea’s KOSPI dropped 1.3%.
  • Singapore’s Straits Times Index edged down about 0.5%.
  • China’s Shanghai Composite and the Shanghai Shenzhen CSI 300 each slipped 1%.
  • Hong Kong’s Hang Seng index declined roughly 1.5%.

In other regional moves, Australia’s S&P/ASX 200 decreased 1.5% after data showed the unemployment rate rose in February alongside a decline in full-time employment. Futures tied to India’s Nifty 50 were up about 0.4%.


Oil, geopolitics and market sentiment

Oil was a central driver of market sentiment. Brent crude climbed above $110 a barrel on Wednesday and extended gains into Asian trade on Thursday. The recent surge in oil prices followed a string of attacks on energy facilities across the Middle East after a strike on Iran’s South Pars gas field.

Regional authorities said the incidents inflicted substantial damage: Qatar attributed extensive damage at the Ras Laffan energy hub to Iranian missiles, while Saudi Arabia reported intercepting ballistic missiles and drone attacks targeting energy infrastructure. Market participants cited a heightened risk of prolonged supply disruption through the Strait of Hormuz, a channel that handles about a fifth of global oil and liquefied natural gas flows.

Overall market sentiment was also influenced by the Federal Reserve’s rate-hold decision earlier in the week, which carried a hawkish tone and helped pressure risk assets globally.


This article reports market moves, central bank actions and geopolitical developments as stated by official releases and market indicators. Where available, percentage moves and specific descriptions of events are presented exactly as reported.

Risks

  • Escalation of the Middle East conflict and further attacks on energy infrastructure could sustain or deepen oil price increases, impacting energy-importing economies and inflation-sensitive sectors such as consumer goods and transportation.
  • A sustained hawkish posture from major central banks, including the Federal Reserve, may continue to damp investor risk appetite and put pressure on equity markets across the region.
  • Rising unemployment and falling full-time employment, as seen in Australia’s February data, create downside risks for domestic demand and sectors reliant on consumer spending.

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