# 軟銀集團公司超越豐田汽車公司，成為日本最有價值的公司。

*business · news · 2026-06-01 · Moneycontrol*

## Key points

- 軟銀首次在超過20年來超越豐田，成為日本最有價值的公司。
- 2024年軟銀股價上漲超過90%，而豐田股價下跌超過10%。
- 軟銀持有近13%的OpenAI股份，該投資金額達650億美元，預計於十月完成。
- 人工智慧驅動的需求推動Kioxia Holdings市值達約40兆日圓，超越三菱UFJ金融集團。

SoftBank Group Corp. overtook Toyota Motor Corp. as Japan’s most valuable company on Monday, marking a milestone for the global artificial intelligence boom and a dramatic reshuffling of the country’s corporate hierarchy. Shares of the Masayoshi Son-led technology group climbed 14% in Tokyo trading, pushing its market capitalization past Toyota’s for the first time in more than two decades. The feat was last achieved only briefly during the peak of Japan’s internet bubble in 2000, based on market value including treasury shares. The rally has propelled SoftBank shares up more than 90% this year, pushing the company’s market value above ¥48 trillion, higher than Toyota’s around ¥46 trillion. Toyota shares, by contrast, have fallen more than 10% this year. The changing of the guard underscores how rapidly investor tastes have shifted toward companies that are benefiting from the AI buildout. It also reflects how the fortunes of two Japanese corporate titans have diverged, as macroeconomic headwinds and geopolitical tensions weigh on the auto sector while AI euphoria takes hold. “This epoch-making event symbolizes the AI boom,” said Kazuhiro Sasaki, head of research at Phillip Securities Japan Ltd. “Extraordinary conditions are emerging around expectations for massive IPOs in the US,” triggering a reshuffle of capital, he said. Japan’s memory-chip maker Kioxia Holdings Corp.’s market cap is also hovering around ¥40 trillion, making it Japan’s third-most valuable company, surpassing Mitsubishi UFJ Financial Group Inc. The supplier of NAND flash chips expects to earn more in the current quarter than it did in the 12 months ended March due to AI data centers’ voracious appetite for data storage. SoftBank climbed on Monday as AI-related companies gained across the region, making it the biggest boost to the Topix index, while Toyota was the benchmark’s largest drag. SoftBank stock has been gaining since news broke last month that two high-profile portfolio companies - OpenAI and SB Energy Corp. - were preparing for potential US listings. SoftBank has committed close to $65 billion to the ChatGPT developer, which will give it a stake of around 13% by October. Investor sentiment toward SoftBank has experienced a turnaround, brushing aside earlier concerns that intensifying competition from rivals including Anthoropic PBC, Alphabet Inc.’s Google and Elon Musk’s xAI Corp. might erode OpenAI’s dominance. The company’s valuation has been further supported by gains in chip-design unit Arm Holdings Plc following Nvidia Corp.’s earnings results and growing conviction that AI demand will continue spreading across industries. Excluding treasury shares, SoftBank’s market cap has already surpassed Toyota’s last month. Unlike in the US, it’s customary in Japan for market capitalization to include treasury shares, although analysts often exclude them for global comparisons. In contrast, Toyota shares have fallen this year and retreated against a worsening macroeconomic backdrop. Hostilities tied to the Iran conflict have sent oil prices higher, raising fuel costs and dampening demand for automobiles. The automotive sector’s growth also remains heavily pressured as the industry navigates a grueling and capital-intensive structure transition toward electric vehicles amid software integration. “SoftBank has concentrated its management resources on AI-related businesses and has successfully ridden the broader global tech rally,” said Tomo Kinoshita, a global market strategist at Invesco Asset Management Japan Ltd. “Toyota, meanwhile, has been hit by rising oil prices stemming from the Iran war, which raises the cost of operating vehicles and weighs on global auto demand.” While Kinoshita said that the valuation gap could reverse later this year if crude prices decline and support automotive demand, the long-term trajectory favors tech. “Over the longer term, AI-related companies are likely to command higher valuations,” said Kinoshita. “Their presence in Japan’s equity market will only continue to grow stronger.”

**Companies:** SoftBank Group Corp., Toyota Motor Corp., Kioxia Holdings Corp., Mitsubishi UFJ Financial Group Inc.
**Countries:** Japan, United States

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