Asian equities were relatively resilient on Wednesday despite a severe global bond sell-off that has pushed borrowing costs to levels not seen for years. The 10-year US Treasury yield held around 5.23%, near its highest since 2007, and was heading for a monthly increase of almost 50 basis points, its largest monthly rise in roughly two years.
Key points
- US 10-year Treasury yields remain around 5.23%, with the biggest monthly increase in roughly two years.
- MSCI Asia-Pacific ex-Japan gained 0.4%, while Japan’s Nikkei rose 2.1%.
- Brent crude was around US$103.13/barrel, while the dollar was heading for a 2% monthly gain.
Why it matters
Thailand is entering the final quarter with a low domestic policy rate, flood-related disruption and elevated energy costs. A structurally higher global yield environment could increase financing costs and pressure the baht even if Thai equities remain supported by strong electronics and AI-related investment.
The bond-market deterioration reflects several forces acting simultaneously: higher inflation expectations, heavy government borrowing and issuance, concerns over public finances and elevated energy prices linked to the Middle East conflict. Japan’s 10-year government bond yield was also on course for a 42bp quarterly increase, underscoring how the shift toward higher global yields is no longer confined to the US market.
SCI’s Asia-Pacific index excluding Japan rose 0.4% on Wednesday. Japan’s Nikkei gained 2.1%, while South Korea’s Kospi was heading for a monthly gain of 0.7%. The resilience reflects strong corporate earnings and continued enthusiasm around AI, which are helping offset the higher discount rates normally associated with rising bond yields.
China remains a notable exception. The CSI 300 was up only 0.2% and was heading for a 13% quarterly decline, while the Shanghai Composite was on course for a 6.2% quarterly fall. The contrast suggests that technology-driven earnings strength is not sufficient everywhere to overcome concerns about domestic growth, property and broader economic conditions.
The currency and commodity backdrop remains challenging for Thailand and ASEAN. The dollar is on track for a 2% monthly gain, while Brent crude was around US$103.13 a barrel. Higher US yields and oil prices can pressure emerging Asian currencies and raise imported costs, increasing the difficulty of maintaining accommodative monetary policy.
The relief rally in Japanese equities highlights the intense relationship between energy costs, inflation expectations, and monetary policy in an import-dependent economy.
Key Factors Behind the Market Pivot
- Easing Supply Concerns: International benchmark Brent crude plummeted from volatile highs near $107–$108 a barrel down to approximately $102 a barrel. A major catalyst was Saudi Arabia partially reopening its vital East-West pipeline and expanding alternative crude routes, which greatly reduced fears of localized Middle East shipping disruptions.
- Alleviating “Imported Inflation”: Because Japan relies on foreign imports for the vast majority of its energy needs, soaring oil prices act as a direct tax on corporate profit margins and consumer spending. The sharp retreat in crude relieved immediate pressure on input costs.
- The Bank of Japan (BOJ) Vector: Throughout September 2026, spiking energy prices fueled speculation that the BOJ would be forced into an accelerated schedule of domestic interest rate hikes. Lower oil prices tempered immediate domestic inflation anxieties, offering a temporary breather regarding consecutive rate hikes.
- Technology Resurgence: High-growth sector shares—specifically AI and semiconductor stocks—had been battered due to rising bond yields and energy macro pressures. Lower crude costs sparked a significant wave of tech buybacks, driving INDEXNASDAQ:.IXIC futures higher and pushing the INDEXNASDAQ:.IXIC counterpart INDEXNASDAQ:.IXIC up by over 2% in matching momentum.
These factors contribute to increased volatility and uncertainty in the bond market. Investors are wary of potential interest rate hikes by central banks aiming to combat inflation, which could further impact bond yields. Additionally, the geopolitical tensions in the Middle East add another layer of complexity, potentially affecting global supply chains and energy markets. As governments continue to finance their efforts through significant borrowing, the long-term sustainability of public finances remains a concern, prompting investors to reassess risk and seek safer assets.
