SoftBank Group’s market value halved from its peak in June, as higher borrowing costs fuel investor concerns over the sustainability of its massive investments in artificial intelligence. Shares of the Tokyo-based company fell 6.9% on Thursday, taking their drop from an all-time high struck on June 2 to 50%, with earnings from U.S. megacaps failing to ease the angst. After briefly overtaking Toyota as Japan’s biggest company four months ago, its market capitalization is now about ¥24.7 trillion ($157 billion), smaller than that of Hitachi and Recruit.
Global concerns over AI spending had accelerated after U.S.-based cloud-computing provider CoreWeave’s bonds fell to levels associated with distress, exposing financing risks across the industry. If global sentiment toward the AI growth story turns sour, it may lead to valuation losses for SoftBank’s Vision Fund, which would in turn result in higher premium for future funding, he said. The price to insure SoftBank’s debt against default has climbed, with credit-default swaps rising to the highest level in nearly four years on Tuesday.
With the company relying on debt financing for much of its investments across the AI ecosystem, ranging from infrastructure and energy to robotics, CoreWeave’s troubles dented confidence even in equity investors who had earlier focused on returns from SoftBank’s AI bets. The stock is Nikkei’s worst performer so far this month, down more than 30% and wiping out all gains from September. Rising competition among AI models also remains an overhang.
OpenAI, in which SoftBank has invested almost $65 billion, now faces more affordable Chinese rivals offering comparable performance. SoftBank raised $11.1 billion in September via the largest corporate junk bond sale on record to finance founder Masayoshi Son’s big AI ambitions.
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