BY COMFORT OGBONNA

Oil prices and government bond yields rose on Tuesday, putting pressure on Asian equities as investors prepared for an expected interest rate increase in Australia and adjusted to a global environment in which borrowing costs could remain elevated for years.

The benchmark 10-year U.S. Treasury yield climbed above 5.27% overnight, reaching its highest level in 19 years. The yield has risen by nearly 50 basis points in September, marking one of the sharpest monthly increases in recent years as investors reassess the outlook for inflation, economic growth and monetary policy.

The two-year Treasury yield has risen even more sharply, gaining more than 57 basis points this month and approaching 5%. The increase reflects expectations that persistent U.S. economic growth and inflation could prompt the Federal Reserve to raise interest rates several more times through the middle of next year.

Higher government bond yields have broad consequences for financial markets because they serve as a benchmark for borrowing costs around the world. They influence mortgage rates, corporate financing and the cost of government debt while also providing investors with a reference point for deciding how much they are willing to pay for riskier assets such as stocks.

As yields rise, borrowing becomes more expensive for governments, companies and households, potentially putting pressure on spending and investment.

The latest increase in yields came despite support for technology stocks from Nvidia, which announced a $150 billion increase to its existing share repurchase authorization. The move helped lift the chipmaker’s shares, although it was not enough to prevent the technology-heavy Nasdaq from falling 0.9%.

Asian markets were also affected by the rise in global borrowing costs. Government bond markets in Japan, South Korea and Australia came under pressure, while most major regional stock indexes moved lower.

Investors are increasingly considering the possibility that the era of exceptionally low interest rates that followed the global financial crisis may not return soon.

Angus Hui, head of fixed income at Fullerton Fund Management in Singapore, said investors were entering a new environment in which higher borrowing costs could become a more persistent feature of financial markets.

Government interest expenses are already taking up a larger share of budgets in many developed economies, he said, potentially putting additional strain on public finances. That could also make it more difficult for bond markets to recover strongly even if global economic growth slows.

The prospect of sustained higher yields has become one of the central concerns for investors because governments will have to refinance debt at increasingly expensive rates. Companies and households face similar pressures as existing loans mature and are replaced with debt carrying higher interest costs.

Oil prices added to the pressure on markets. Brent crude futures rose to around $106.60 a barrel as investors continued to watch developments in the Middle East, where uncertainty over diplomatic efforts remained high.

A prolonged period of elevated oil prices could add to inflationary pressures by increasing transportation, manufacturing and energy costs. That could make it more difficult for central banks to reduce interest rates even as higher borrowing costs weigh on economic activity.

In China, weakness in technology shares added to the cautious mood. The blue-chip CSI300 index remained near a one-year low after technology stocks were hit by concerns surrounding U.S. plans to restrict the use of Chinese components in data centers.

The developments have added to uncertainty surrounding China’s technology industry, which is already facing pressure from trade restrictions and increasing competition in artificial intelligence.

The enormous investment required to develop artificial intelligence infrastructure is also drawing attention from investors. A prospectus from AI company Anthropic highlighted the scale of spending expected in the sector, with the company targeting a valuation of about $2 trillion while planning hundreds of billions of dollars in spending on computing capacity and infrastructure.

The figures underscore both the growth potential and financial risks associated with the global AI boom as technology companies race to secure the computing power needed to develop increasingly advanced systems.

Currency markets were relatively stable during Asian trading on Tuesday, although the U.S. dollar remained on course for a monthly gain.

The Japanese yen traded around 157.31 per dollar after strengthening on Monday. The move followed comments from Japan’s senior currency official, who warned traders to pay attention to concerns expressed by both Tokyo and Washington over the yen’s weakness.

The yen has remained under pressure for much of the year as differences in interest rates between Japan and the United States have encouraged investors to favor dollar-denominated assets. Japanese authorities have repeatedly warned that excessive currency movements could prompt action.

The euro was little changed at about $1.1367, while the Australian dollar stood near $0.7012.

Australia’s currency and bond markets were closely watched ahead of the Reserve Bank of Australia’s expected interest rate increase. Financial markets had largely priced in a hike, as well as the possibility of another increase by February.

The key question for investors is whether policymakers will signal that additional rate increases are likely or suggest that the current move could be enough to contain inflation.

Westpac rates strategists Damien McColough and Uma Choudhury said markets would be watching closely to see whether the central bank governor delivers a sufficiently firm message to support current expectations, particularly if the rate decision is not unanimous.

The combination of higher oil prices, rising bond yields and expectations of further interest rate increases is creating a challenging environment for investors. With borrowing costs rising across major economies, markets are increasingly focused on how governments, businesses and households will absorb higher financing costs without significantly weakening economic growth.

Original article