Japan Stock of the Day | Kabutaro & Friends

On October 5, 2026, the most talked-about Japanese stock online was TIER IV <593A>.
Background: At 10 a.m. on October 5, the company issued a press release stating that it had been selected for the Ministry of Economy, Trade and Industry's "Global South Future-Oriented Co-Creation Project Subsidy (Large-Scale Demonstration, Non-ASEAN Member Countries)." Using the subsidy, it will advance autonomous bus trials and local human resource development in Saudi Arabia, building a business model for future commercial operation. The trials will start with driving in closed areas before expanding to public roads; the vehicles will be developed with a European automaker, and the company will work with partners including local technology company Elm. According to its September 4 disclosure, the subsidized expenses applied for total 6 billion yen, with a planned subsidy rate of two-thirds. The stock rose as high as 2,283 yen and closed up 292 yen (+15.36%) at 2,193 yen. Turnover swelled to about 89.8 billion yen, and its market capitalization is 139.3 billion yen.