Japan’s stock market saw a sharp decline in the morning session, led by a significant drop in the Nikkei 225 which fell 4.15%. The primary driver behind today’s market weakness is the Bank of Japan’s decision to maintain its ultra-loose monetary policy, signaling no immediate change despite rising global inflationary pressures. This stance disappointed investors hoping for a policy shift toward tightening, causing a sell-off particularly in growth and technology-related stocks. Additionally, concerns about global economic slowdown, influenced by mixed cues from Wall Street overnight, added to the cautious sentiment.

The sector impact was uneven with financial and automotive shares standing out as relative outperformers amid the broad market weakness. Major automakers Toyota (7203) and Honda (7267) gained around 2.5%, supported by their strong export prospects and recent upbeat earnings reports. Conversely, technology and industrial heavyweights such as Hitachi (6501) declined by 1.67%, reflecting investor aversion to companies seen as more vulnerable to higher costs and slower growth. The banking sector showed modest gains, with MUFG (8306), SMFG (8316), and Mizuho (8411) up by less than 1%, benefiting from expectations that current policy will keep interest rate spreads stable for now.

The yen’s movement also played a key role in shaping market performance. The currency strengthened slightly against the US dollar following the BOJ’s policy announcement, which tends to pressure exporters by making their goods more expensive overseas. However, the gains by Toyota and Honda suggest that investors remain confident in their global competitiveness despite the yen’s appreciation. Importers and domestic-focused companies generally benefit from a stronger yen, but this effect was overshadowed today by concerns about slower global demand and persistent supply chain issues impacting many sectors.

During the morning session, we saw a clear rotation away from high-growth and export-dependent sectors into more defensive and value-oriented areas such as banking and large-cap autos. This sector rotation reflects investors seeking safer havens amid uncertainty around monetary policy and global economic conditions. Looking ahead to the afternoon session, market participants will likely continue to digest the BOJ’s stance alongside earnings announcements and any updates from global markets. Unless there is new positive news, the cautious mood may persist, with further pressure on tech and growth stocks balanced by selective buying in financials and exporters with strong fundamentals.