Asian Markets Trade Mixed as Rising Bond Yields and US Inflation Data Shape Investor Sentiment

Japan's Nikkei 225 rose 1.5%, while the broader TOPIX gained 1%. Chinese equities also edged higher, with the CSI 300 up 0.2% and the Shanghai Composite rising 0.3%. Hong Kong's Hang Seng index fell 0.3%, while South Korea's KOSPI declined 0.4%.

The moves came after the US 30-year Treasury yield reached 5.6206% on Tuesday, its highest level since 2002. It subsequently eased to around 5.56% in Asian trading, offering some relief to risk assets after a sharp rise in long-term borrowing costs.

Investors are focused on the US personal consumption expenditures price index for August, the Federal Reserve's preferred inflation measure. The data is expected to provide further evidence on the persistence of price pressures and could influence expectations for the central bank's interest-rate path.

US Treasury yields have become an important driver of global asset allocation as investors reassess the possibility of further Federal Reserve tightening. Higher US yields can increase the relative attractiveness of dollar-denominated assets and place pressure on emerging-market currencies and equities.

Oil markets remain another source of uncertainty. Brent crude was trading around $103 a barrel as investors monitored the Middle East conflict and uncertainty around the Strait of Hormuz. Signs of recovering Saudi exports and alternative supply routes have provided some relief, although energy prices remain elevated.

Regional economic data added further complexity. Australia's annual inflation rate accelerated to 4% in August from 3.5% in July, while the Reserve Bank of Australia had raised its cash rate to 4.6% the previous day. Japan's industrial production, meanwhile, fell 1.7% in August, marking a second consecutive monthly decline.

China provided a more positive signal, with manufacturing activity returning to expansion and the non-manufacturing PMI also improving.

The immediate focus for global markets will be the US inflation release and subsequent labour-market data, alongside movements in Treasury yields and oil prices.

Together, those indicators will help determine whether the recent pressure from higher borrowing costs begins to ease or remains a dominant factor for Asian and global investors.