SK Hynix Tumbles, Biogen Gains, TriCo Rises

Today's biggest winners and losers in the stock market, a look at the notable movers:
On this episode of Stock Movers:

- An AI-fueled stock rout in South Korea spilled over into the US market Monday, as SK Hynix (SKHY) American depositary shares fell as much as 9.9%. The decline came after shares of SK Hynix plunged a record 15% in South Korea, sending the benchmark Kospi index down 9% and triggering a market-wide trading suspension.

-Biogen (BIIB) was raised to buy from hold at Truist Securities as analyst Danielle Brill sees an attractive risk reward ahead of pivotal clinical data readouts. Biogen is expected to show detailed data on its experimental Alzheimer's drug, diranersen, at the Alzheimer's Association International Conference in London, which could give a shot in the arm to Biogen stock.

- TriCo Bancshares (TCBK) shares rise. First Hawaiian agreed to acquire TriCo in an all-stock transaction valued at $63.12 per share based on Friday’s closing price. Upon closing, First Hawaiian and TriCo shareholders are expected to own approximately 65% and 35%, respectively, of the combined company.

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