Economy

SoftBank shares plunge as Google’s Gemini sparks fears over OpenAI’s competitiveness

SoftBank Group shares tumbled to a 2½-month low on Tuesday, extending a sharp two-day selloff triggered by concerns that Alphabet’s latest Gemini artificial intelligence model could intensify competitive pressure on OpenAI — one of the Japanese conglomerate’s most important investments.

The stock fell as much as 11% in Tokyo, following a 10.9% drop in the previous session before Japan’s long weekend.

The back-to-back declines stood out even for SoftBank, whose shares are known for their volatility.

SoftBank ended down 9.95%, shaving 338 points off the Nikkei’s final tally — even as Alphabet’s US shares hit a record high after the Gemini launch.

The Nikkei 225 erased most of its early gains to close nearly flat, rising just 0.07% to 48,659.52.

The Topix slipped 0.21% to 3,290.89.

“Investors were concerned about the competitiveness of ChatGPT from OpenAI, in which SoftBank Group invests, with Google’s new Gemini,” said Kazuaki Shimada, chief strategist at IwaiCosmo Securities.

“Typically, Japan’s AI-related heavyweights move in the same direction, but today SoftBank Group fell on its own reason,” said Shimada.

The Gemini 3 is receiving rave reviews, with Salesforce CEO Marc Benioff also stating that he will ditch ChatGPT for the Gemini 3.