Financial market display showing global oil prices and indexes

Asian equity markets fell sharply on Wednesday as higher oil prices and a global bond selloff revived fears that inflation will stay elevated and central banks will keep borrowing costs high.

The MSCI Asia-Pacific index dropped about 2%. South Korea's KOSPI fell nearly 4%, while Japan's Nikkei 225 lost roughly 2.9%. The moves followed declines on Wall Street, where the S&P 500 slipped 0.7% and the Nasdaq fell 1%.

Why markets are under pressure

Renewed fighting involving the United States and Iran pushed Brent crude to around $95 a barrel. Investors are particularly sensitive to any threat to shipping through the Strait of Hormuz because the route carries a major share of global oil supplies.

Higher energy prices affect more than petrol. They raise transport, manufacturing and food costs, making it harder for central banks to bring inflation down. That concern has pushed government bond yields higher and reduced the appeal of expensive technology shares.

The US 10-year Treasury yield reached about 4.81%, its highest level in nearly three years. Markets were pricing a roughly 67% probability of a quarter-point Federal Reserve rate increase at the September meeting, up significantly from a week earlier.

Currency and commodity moves

The US dollar strengthened near a two-week high as investors sought liquidity and responded to rising Treasury yields. Gold fell about 0.6%, while bitcoin and ether also traded slightly lower.

Japan faces an especially difficult mix. Higher oil import costs can weaken the yen and add inflation at the same time that long-term Japanese bond yields are climbing. South Korea's export-heavy market is also vulnerable when global growth expectations weaken.

What happens next

Traders will focus on US employment and inflation data, central-bank guidance and any change in energy flows through the Gulf. A cooling economy could normally support stocks by encouraging lower rates, but oil-driven inflation complicates that argument.

The current selloff is therefore not about a single data release. It reflects a collision between geopolitical risk, expensive energy, stretched market valuations and the possibility that interest rates remain higher for longer.

Source: Reuters global markets update.