Asian equities struggled to maintain momentum on Tuesday as the initial euphoria over a preliminary US-Iran peace deal gave way to renewed focus on central bank policy. Japan's Nikkei 225 slipped 0.3% from recent record highs after the Bank of Japan raised its benchmark interest rate to 1%, the highest level in 31 years, prompting investors to reassess the outlook for further tightening.
The broader MSCI index of Asia-Pacific shares outside Japan was flat, erasing early gains as weak Chinese economic data and lingering uncertainty over the durability of the US-Iran framework weighed on sentiment. Hong Kong's Hang Seng index underperformed after China's retail sales and fixed-asset investment figures missed expectations, underscoring the fragility of the region's largest economy.
BOJ Decision Takes Center Stage
The Bank of Japan's rate increase to 1% marked a historic shift in monetary policy, drawing investor attention away from the geopolitical relief that had lifted markets on Monday. With Governor Kazuo Ueda absent from the post-meeting briefing due to medical treatment, Deputy Governor Shinichi Uchida will face questions on whether the central bank sees room for additional tightening, particularly after the US-Iran deal pushed oil prices lower.
Analysts at Mitsubishi UFJ noted that they do not expect major changes to the BOJ's assessment, adding that Uchida's explanation will likely align with Ueda's June 3 speech. The Nikkei's retreat reflects caution as traders weigh the implications of higher borrowing costs for corporate earnings and economic growth.
US-Iran Deal Faces Reality Check
The relief rally that lifted Wall Street on Monday proved short-lived in Asia as investors sought concrete evidence that the US-Iran agreement can hold. Brent crude oil steadied near $83 a barrel, close to three-month lows, after settling at its lowest level since March. While traders have removed some war premium, shipping companies warned that confidence in the reopening of the Strait of Hormuz will take time to rebuild.
Westpac analysts described the pact as an important diplomatic breakthrough that should remove a source of volatility, but cautioned that its durability remains uncertain given unresolved issues such as Iran's nuclear program. The cautious tone in energy markets suggests that investors are not yet pricing in a full normalization of oil flows.
Wall Street Rally Faces Asia Caution
The cautious mood in Asia contrasts with a strong US session on Monday, where the S&P 500 rose 1.7%, the Nasdaq Composite jumped 3.1%, and the Dow Jones Industrial Average closed at a record high. Lower oil prices and easing inflation risks fueled the rally, with Europe's Stoxx 600 also reaching an all-time high.
However, Asian traders face a busy week of central bank decisions. The Reserve Bank of Australia is expected to hold rates at 4.35% after three increases this year, while the Federal Reserve's policy announcement later this week will be closely watched for signals on the pace of rate cuts. The dollar index held near 99.69, and the 10-year Treasury yield remained broadly steady around 4.47%.
Gold edged higher to approximately $4,311 an ounce, indicating that investors have not fully abandoned defensive positions despite the recent risk-on sentiment. For a broader perspective on market dynamics, see our analysis of Ethereum's retreat amid macro headwinds and the Nikkei's earlier plunge driven by chip sector weakness.
Outlook: Central Banks Hold the Key
For now, Asia's message is clear: the peace rally has bought time, but central banks will determine whether it lasts. With the BOJ already moving, the Fed and RBA decisions this week will set the tone for risk assets. Weak Chinese data adds another layer of uncertainty, while oil markets remain in limbo as the US-Iran deal faces its first real test. Investors should brace for continued volatility as policy risks and geopolitical developments compete for attention.
This article is for informational purposes only and does not constitute financial advice.
