Japan Markets Watch BOJ, Yen and AI Rally in October's First Week

Japanese markets began the week of October 5 with a focus on several key factors, including Prime Minister Sanae Takaichi’s policy speech, the Bank of Japan’s next rate signal, the yen’s weakness, and the AI-led rally in Tokyo stocks. The Nikkei 225 has been supported by AI, semiconductor, and high-priced technology shares, while the TOPIX has struggled to keep pace. Investors are watching to see if the market advance can spread beyond chip-related heavyweights into banks, exporters, and consumer shares.

Takaichi’s policy speech on October 5 will be the first major domestic political event of the week. She is expected to pledge a nimble response to economic and financial market developments while closely monitoring interest-rate movements. The BOJ raised its policy rate to 1.25% in September, the highest level in 31 years, and investors are trying to gauge whether another hike could come as soon as October or later in the year.

Key economic data releases this week include the Reuters Tankan for corporate sentiment, household spending, current-account data, and machine-tool orders. These will provide insights into the health of the economy and the impact of higher borrowing costs. Fast Retailing’s earnings report will also be closely watched, as the retailer is a key indicator of consumer spending and market sentiment.

The AI and semiconductor theme remains the market’s main growth driver, with companies like Tokyo Electron, Advantest, and Kioxia central to Tokyo’s market direction. The yen’s weakness supports exporters but raises the cost of imported goods, making currency moves both a financial and political issue. The Federal Reserve’s minutes due this week will also be important, as they affect U.S. yields, the dollar-yen exchange rate, and global appetite for growth stocks.