On October 9, 2023, the Nikkei average experienced a significant rise, temporarily exceeding 57,000 points, marking a historic milestone as it surpassed the previous threshold of 55,000 points. The surge followed the overwhelming victory of the Liberal Democratic Party (LDP), which won 316 seats in the recent House of Representatives election held on October 8. This election result is notable as it allows the LDP to have a supermajority, holding more than two-thirds of the seats, and is expected to facilitate the government's aggressive fiscal policies under Prime Minister Sanae Takaichi.

Following the election, the Tokyo Stock Exchange opened strong on October 9, starting at 55,130 points, an increase of 876 points from the previous week. As trading continued, the Nikkei index broke past its record high from October 3, displaying confidence in the market bolstered by not only local political developments but also positive performance from overseas stock markets, particularly those in New York, where major indices rose sharply, including the Dow Jones Industrial Average surpassing 50,000 points for the first time.

A broad range of stocks saw purchasing interest, especially in AI and semiconductor-related sectors, indicating a bullish sentiment in tech stocks. Additionally, the yen experienced slight depreciation against the dollar, trading around 157 yen per dollar, positively impacting export-related stocks like automakers. This rally emphasizes market optimism regarding the continuation of expansive fiscal policies and may signal a trend known as "Takaichi trading" that capitalizes on political stability and growth expectations in Japan's economy.