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Samsung Electronics, SK Hynix Shares Tumble as Chip Rout Spreads From Wall Street to Seoul

7/4/2026

Shares of Samsung Electronics and SK Hynix plummeted more than 7% in early Thursday trading in Seoul, as a broad chip-sector selloff that originated on Wall Street spread swiftly to South Korean markets and hit the country's two largest semiconductor companies.

Losses steepened as the session progressed, with declines surpassing 9% for both stocks. The Macro Driver: Wall Street Exports the Pain The immediate trigger was not local.

The rout began on Wall Street and then crossed the Pacific, arriving in Seoul when South Korean markets opened on Thursday.

That transmission pattern — American risk-off sentiment flowing into Asian chip stocks — reflects how tightly the semiconductor supply chain ties together valuations across geographies.

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