MarketWatch reported that talks between Anthropic and Samsung Electronics over a custom AI-chip deal helped drive a sharp rally in Korean stocks on July 3, 2026. The report remains unconfirmed by either company.
Reports that Anthropic is in talks with Samsung Electronics over a custom AI-chip manufacturing arrangement helped lift Korean stocks on July 3, 2026, according to MarketWatch. The report triggered a sharp move in Samsung shares and added to a broad rebound in the Kospi, but neither company had publicly confirmed the discussions.
The MarketWatch report said Samsung Electronics rose about 8% in Seoul trading and the Kospi gained about 5.75% after the news. Barron's later reported a similar rally, saying Samsung climbed about 8.2% and the benchmark index rose about 5.76% as semiconductor stocks bounced.
The catalyst appeared to be a report from The Information, which said Samsung could produce bespoke chips for Anthropic at its next-generation foundry. The Economic Times also reported that Anthropic had held discussions with Samsung about a potential custom AI-chip partnership.
Why the market reacted
Samsung carries heavy weight in Korean equity benchmarks, so any material development tied to the company can quickly move the broader market. That effect was magnified by a week of volatile trading in Korean chip names, with SK Hynix also rebounding alongside Samsung.
The move also fits a broader investor theme around AI infrastructure and chip supply chains. A confirmed manufacturing deal could matter for Samsung's foundry business and for Anthropic's access to compute hardware, but the public reporting remains limited to talks and market speculation.
What remains unconfirmed
The reporting reviewed so far does not include a public statement from Anthropic or Samsung confirming a deal. It also does not establish whether the discussions are exploratory or advanced, or whether the arrangement would be a manufacturing contract, a broader partnership, or something narrower.
Follow-up coverage from higher-authority wire services such as Reuters or Bloomberg, or direct company statements, would be needed to confirm the scope of any agreement.
What to watch next
Market participants will be watching for official comments from Anthropic or Samsung, as well as further reporting on the status of the talks. Traders will also be watching whether the rally in Samsung, SK Hynix and the Kospi holds into the next session or reverses once the initial reaction fades.
Revision note
Initial automated publication.