Check out the companies making headlines before the bell: Fiserv — The fintech stock rallied more than 5% after The Wall Street Journal reported, citing sources , that Fiserv has talked with major U.S. banks — including JPMorgan and Bank of America — to sell its payments infrastructure business that handles debit card transactions. Vertex Pharmaceuticals , Crinetics Pharmaceuticals — Vertex will buy Crinetics in a $10 billion deal to acquire treatments for rare hormonal diseases, the two companies say Monday. Vertex shares dipped nearly 1%. Crinetics shares roughly doubled. First Solar — The solar module manufacturer rose nearly 3% after Deutsche Bank upgraded the stock to buy from neutral . The bank cited three reasons why investors should buy the dip on shares, including a potential trade policy shift. Semiconductors — Chip stocks slid in the premarket after mixed quarterly results from tech giant Samsung overnight led investors to pare exposure to the artificial intelligence trade. Shares of Micron dropped 5%, as did Lam Research . Rivian — Shares of the electric vehicle maker tumbled 9%. Rivian issued revenue and delivery guidance that topped a FactSet consensus forecast. However, it also said it’s selling 75 million new shares in a big capital raise. Korea stocks — A global chip stock selloff affected Korea’s stock exchanges, which are heavily weighted toward semiconductor companies. The Kospi Index slid more than 4%. The iShares MSCI South Korea ETF (EWY) dropped 4.6% in the premarket. — CNBC’s Fred Imbert contributed reporting
