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After report of OpenAI missing targets, one company sees its worst share-price decline in six months

SoftBank Group shares tumbled in Tokyo trade, suffering its worst single-day percentage loss in six months, after a published report that OpenAI missed several internal targets in the face of competition from rival artificial-intelligence labs.

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MarketWatch
April 28, 2026·1 min read
After report of OpenAI missing targets, one company sees its worst share-price decline in six months

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SoftBank Group shares tumbled in Tokyo trade, suffering its worst single-day percentage loss in six months, after a published report that OpenAI missed several internal targets in the face of competition from rival artificial-intelligence labs.

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After report of OpenAI missing targets, one company sees its worst share-price decline in six months

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