Japanese shares mixed as investors digest election outcome

The Nikkei 225 slipped by 0.1% to close at 39,775, while the broader Topix Index edged up by 0.1% to 2,836 on Tuesday, with Japanese markets struggling for direction as investors digested the implications of the weekend’s upper house election and awaited clarity on international trade policy.

While the ruling coalition lost its majority, the outcome was largely in line with expectations and thus had a limited immediate impact on market sentiment. Political continuity appeared assured, with Prime Minister Shigeru Ishiba reaffirming his commitment to remain in office, helping to ease concerns of abrupt leadership changes or disruptions to policymaking.

Ishiba emphasized the importance of maintaining stability as Japan continues sensitive tariff negotiations with the United States and navigates a delicate phase of its economic strategy, including energy policy reforms and support for domestic manufacturing.

Investors took some comfort from these reassurances, though broader market enthusiasm was tempered by lingering uncertainty over global trade dynamics and a lack of fresh domestic catalysts.

Sector performance was mixed. Industrials and technology shares saw divergent movements. Among top performers, Fujikura surged 4.4% following strong earnings and bullish guidance on demand for its fiber-optic components.

Mitsubishi Heavy Industries jumped 6.2%, driven by expectations of increased defense and aerospace spending amid rising geopolitical tensions in the Asia-Pacific region. SoftBank Group also rose 2.9%, supported by investor optimism around its AI and tech portfolio, including renewed momentum at Arm Holdings.

On the downside, semiconductor-related stocks came under pressure amid concerns about weakening global chip demand. Lasertec fell 2.7%, and Tokyo Electron dropped 1.3%, both weighed down by cautious forward guidance from overseas peers. Metaplanet plunged 14.1% in a volatile session, with analysts attributing the decline to profit-taking following a recent speculative rally fueled by its blockchain and digital asset initiatives.

Overall, the mood in Tokyo was cautious, with investors awaiting more clarity on corporate earnings and upcoming macroeconomic data, including inflation figures and BOJ policy signals. Market participants are also closely monitoring developments in U.S.-Japan trade talks, which could shape near-term sentiment for export-heavy sectors.