Asian Markets Rally as US Treasury Moves to Stabilize Bond Yields

Starting September 9, the Treasury will increase buybacks for bonds maturing in 10 years or more to at least $4 billion per operation, up from the current $2 billion. This decision triggered an immediate retreat in regional yields, with Japan’s 10-year sovereign debt falling 5.5 basis points to 2.835%. Australian 10-year bonds declined 3 basis points to 4.995%, while New Zealand’s equivalent securities dropped 2 basis points to 4.690%.

Equity markets responded with broad gains as investors welcomed the cooling trend. South Korea's Kospi surged 5.4%, the Nikkei 225 climbed 1.3%, and Hong Kong's Hang Seng Index rose 1.0%. Analysts suggest that while the buyback program does not shift long-term economic fundamentals, it demonstrates a clear intent by policymakers to prevent further runaway increases in borrowing costs. This sentiment helped stabilize regional currencies even as investors parsed Federal Reserve meeting minutes, which hinted at continued hawkishness regarding interest rates.

Parallel to the market rally, oil prices ticked upward as geopolitical tensions flared. West Texas Intermediate futures rose 0.3% to $86.07 a barrel, while Brent crude gained 0.5% to $92.05, following threats of a new economic campaign against Iran. Despite the uncertainty surrounding the Strait of Hormuz, the immediate focus for traders remains the Treasury’s intervention, which MUFG Bank analysts believe could provide a temporary ceiling for the U.S. dollar and offer a supportive backdrop for tech-exposed Asian economies.