Analysts warned that the market's renewed optimism on SoftBank is masking mounting balance-sheet risks.

Shares of the Masayoshi Son-led technology group climbed as much as 10% in Tokyo trading Monday, as AI-related shares climbed across the region. SoftBank shares have been gaining…

Fueled by its significant stake in AI powerhouse OpenAI, SoftBank Group has surged past Toyota to become Japan's most valuable company. The tech investor's market capitalization…

SoftBank Group overtook Toyota as Japan's most valuable company with a $296B market cap, fueled by AI investments in OpenAI and a proposed €75B computing cluster.

SoftBank CEO Masayoshi Son claims AI is 50x bigger than the dotcom boom, backing it with a $64.6B OpenAI stake as shares surge 46% in five days.

Analysts warned that the market's renewed optimism on SoftBank is masking mounting balance-sheet risks.

SoftBank's stock surged 73% in 2026 as Masayoshi Son's massive AI bets, including an $87 billion France data center deal and OpenAI stakes, fuel a dramatic