Japan's biggest company doesn't make cars anymore. SoftBank just passed Toyota at the top of the market after a 90% stock surge powered almost entirely by AI bets.
The swap marks a major shift for Japan, where Toyota has anchored the rankings for years as the country's industrial flagship.
SoftBank Up 90%, Toyota Down 13%
SoftBank shares have climbed more than 90% this year, while Toyota's have dropped 13% - a gap wide enough to flip the country's market rankings.
The carmaker's troubles run deeper than its stock price. Global sales have fallen for three straight months through April, with suppliers warning about shortages tied to trade disruptions in the Middle East.
Toyota is also losing ground in electric vehicles, where Chinese rivals like BYD have built faster and cheaper supply chains. The world's largest carmaker by volume has been slow to shift away from gas and hybrid models, and that hesitation is now showing up in its valuation.
Why it matters: The old-economy giant is shrinking just as the AI-focused one runs hot, and Japanese investors are rotating out of traditional industrials and into anything tied to AI growth.
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SoftBank's Rally Tracks OpenAI's IPO Path
The recent run in SoftBank shares ties back to one thing: signs that OpenAI is getting ready to go public. SoftBank owns a big chunk of OpenAI, so an IPO would mark up the value of that stake in a hurry.
SoftBank's existing stake is reportedly worth tens of billions on paper, but private valuations only matter on paper until a public listing forces a real market price.
The company is also racing to lock in AI infrastructure around the world. Over the weekend, SoftBank announced plans to spend as much as €75 billion (about $87 billion) on 5 gigawatts of AI data centers in France - roughly the power output of five nuclear reactors, all pointed at training and running AI models.
Son's $60 Billion OpenAI Bet
Masayoshi Son's total commitment to OpenAI now tops $60 billion, which has some inside SoftBank getting nervous.
The catch: Son appears locked in on Sam Altman personally, even as OpenAI works through business challenges, reputational hits, and legal fights from media companies and former partners.
OpenAI is currently fighting copyright lawsuits from major news publishers and book authors, and Altman himself faced internal pushback at the company over the past year.
The size of the bet means SoftBank's future increasingly depends on whether one American startup delivers - a level of concentration most institutional investors would never accept in a single name.
What To Watch
AI demand keeps climbing, SoftBank keeps benefiting, and Toyota keeps drifting, so the new rankings could hold for a while.
The bigger question is whether SoftBank still trades like a diversified Japanese conglomerate or has quietly become a leveraged bet on a single AI startup. Watch for any update on the OpenAI IPO timeline, which would directly move SoftBank's mark-to-market value.
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