Nikkei Hits All-Time High Following Sanae Takaichi’s Appointment as Japan’s Prime Minister

Web Editor

October 21, 2025

a group of people walking past a large sign with numbers on it's side in a city area, Andries Stock,

Background on Sanae Takaichi and Her Impact

Sanae Takaichi, a 64-year-old Japanese politician, has been appointed as the country’s new Prime Minister. This historic moment marks her selection as Japan’s first female leader, following 103 male predecessors. Takaichi took over the leadership of the ruling Liberal Democratic Party (LDP) in early October, succeeding Shigeru Ishiba, who resigned amidst the party’s consecutive losses in national elections. These defeats left the LDP in a minority position within both chambers of Parliament, complicating their ability to pass legislation.

Takaichi’s Rise to Power

Takaichi, who previously served as the Minister of Internal Affairs and Communications, has expressed admiration for former British Prime Minister Margaret Thatcher as a political inspiration. Following her election as LDP leader, Takaichi secured the necessary support in Parliament to form a coalition with the libertarian party Innovation. This partnership paved the way for her confirmation as Prime Minister after a narrow victory in the second round of voting, garnering 125 votes in the House of Representatives and 123 in the House of Councillors.

Market Reaction and Future Implications

The Tokyo Stock Exchange’s Nikkei index, Japan’s primary stock market barometer, closed on Tuesday with a 0.27% gain, reaching an all-time high of 49,316.06 points—its highest closing level since the index’s inception in 1950. This surge can be attributed to investor optimism surrounding Takaichi’s appointment and her potential policies.

  • Nikkei’s Historic High: The Nikkei’s record-breaking close reflects market confidence in Takaichi’s leadership and anticipated economic reforms.
  • Takaichi’s Policy Expectations: Investors expect Takaichi to implement pro-growth policies, potentially boosting Japan’s economy and attracting foreign investment.
  • Upcoming Government Formation: Takaichi is currently working to establish her cabinet, with key positions such as Minister of Finance and Minister of Trade expected to be filled by Satsuki Katayama, Ryosuke Akazawa, and Shinjiro Koizumi, respectively.
  • Donald Trump’s Upcoming Visit: The United States President, Donald Trump, is scheduled to visit Japan next week. Takaichi will likely focus on strengthening the US-Japan relationship during this visit.

Takaichi’s Cabinet and Key Appointments

As Takaichi works to form her new government, several prominent figures are being considered for key cabinet positions:

  • Satsuki Katayama: Strong contender for the Minister of Finance role, Katayama is expected to play a crucial part in shaping Japan’s economic policies.
  • Ryosuke Akazawa: As the head of Japan’s delegation in US trade negotiations, Akazawa is a likely candidate for the Minister of Trade position.
  • Shinjiro Koizumi: Koizumi is rumored to take on the role of Minister of Foreign Affairs, working alongside Toshimitsu Motegi, who may be appointed as Minister of Economy, Trade and Industry.

Conclusion

Sanae Takaichi’s appointment as Japan’s Prime Minister has sparked market optimism, pushing the Nikkei to an all-time high. As she works to establish her cabinet and navigate key international relationships, such as the upcoming visit by US President Donald Trump, Takaichi’s leadership will undoubtedly shape Japan’s future economic and political landscape.