SoftBank Surges 11% to Clear $39, Hitting a Half-Month High
During the Asian trading session on July 10, Japanese and South Korean equities rallied, led by SoftBank’s 11.41% surge to a two-week high. This market optimism follows OpenAI’s release of the GPT-5.6 model family and the "ChatGPT Work" agent. Investors reacted positively to the advancements, which are expected to enhance OpenAI’s future IPO valuation and boost SoftBank’s net asset value. Key sector players, including Kioxia and Samsung Electronics, also recorded gains. The development underscores the significant influence of AI technological progress on major financial markets and the valuation of venture-backed technology portfolios.

TradingKey - OpenAI releases GPT-5.6 and ChatGPT Work, triggering an 11% surge in SoftBank's stock price and leading gains in Japanese and South Korean stock markets.
During the Asian trading session on July 10, Japanese and South Korean stock markets experienced a broad rally, with the Kospi index surging over 3% and the Nikkei 225 rising nearly 2%. SoftBank delivered the most stellar performance, far outperforming other heavyweight stocks.
Opening higher and continuing its upward momentum today, SoftBank surged 11.41%, breaking through the 6,400 yen (approximately $39) threshold, and is temporarily trading at 6,383 yen, marking a new high in nearly half a month. Meanwhile, Kioxia rose 7%, Samsung Electronics gained 4%, and SK Hynix opened higher but pared gains, currently up nearly 1%.
SoftBank Stock Price Chart, Source: TradingView
The primary driver of SoftBank's strong stock performance is OpenAI. Yesterday, OpenAI officially released its new flagship model family, GPT-5.6 (including Sol, Terra, and Luna), alongside "ChatGPT Work," an intelligent agent capable of executing complex workflows. This has given OpenAI greater confidence in its future IPO valuation, directly boosting SoftBank's net asset value and driving SoftBank's stock price to surge strongly today, leading the gains in Japanese and South Korean stock markets.
This content was translated using AI and reviewed for clarity. It is for informational purposes only.
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