Asian markets experienced a broad decline amidst escalating bond yields and geopolitical tensions stemming from renewed U.S.-Iran friction. The U.S. 30-year Treasury yield reached its highest level in nearly two decades, fueling a global bond sell-off that rattled investors across the Asia-Pacific region. Major indices in Japan, South Korea, Australia, and Hong Kong closed lower, reflecting widespread market apprehension.
Asian markets experienced a significant downturn on Wednesday, with investors grappling with the dual pressures of soaring bond yields and heightened geopolitical instability. The situation was exacerbated by remarks from U.S. President Donald Trump, who revealed he was "an hour away" from authorizing a strike on Iran before opting to delay the action for several days.
The global bond sell-off continued as fears of resurgent inflation pushed yields higher. Notably, the U.S. 30-year Treasury bond yield, a key benchmark, traded almost 1 basis point lower at 5.174%, having briefly touched an almost 19-year high of 5.197% during the session – a level not seen since July 2007.
Japanese government bonds also felt the strain, though super-long yields showed some reprieve. The 30-year JGB yield eased by over 3 basis points to 4.122%, retreating from record highs seen earlier in the week. Conversely, shorter-dated Japanese debt continued its ascent, with the 5-year JGB yield climbing to a new record of 2.041%.
Bird's-eye view of central Tokyo including Tokyo Tower at sunrise hours.
Vladimir Zakharov | Moment | Getty Images
Masahiko Loo of State Street commented on the record JGB yields, describing them as part of a broader global "duration reset." He suggested that this adjustment would tighten global financial conditions gradually rather than triggering systemic distress, emphasizing that Japan's debt market is predominantly domestically financed and supported by substantial household savings.
Market performance across the region reflected the pervasive anxiety. Japan's Nikkei 225 dropped 1.29%, while the Topix fell 1.45%. South Korea's Kospi was down 0.69%, and the small-cap Kosdaq saw a steeper decline of 2.23%. Shares of tech giant Samsung Electronics plummeted 3% following the breakdown of wage negotiations, which could lead to a strike by over 47,000 employees on Thursday.
Elsewhere, Australia's S&P/ASX 200 recorded a loss of 0.85%. In Greater China, Hong Kong's Hang Seng index slid 0.55%, and mainland China's CSI 300 decreased by 0.3%.
Despite the Asian sell-off, U.S. stock futures showed a slight uptick, with S&P 500 futures adding 0.14%, Nasdaq 100 futures gaining 0.25%, and Dow Jones Industrial Average futures rising 55 points, or 0.11%.
This followed a challenging session on Wall Street, where stocks closed lower for the third consecutive day. The S&P 500 shed 0.67% to 7,353.61, the Nasdaq Composite finished 0.84% lower at 25,870.71, and the Dow Jones Industrial Average dropped 322.24 points, or 0.65%, closing at 49,363.88, as the surge in bond yields threatened to undermine the ongoing bull market.
— Contributions from CNBC's Sean Conlon, Sarah Min, and Lisa Kailai Han informed this report.
