Check out the companies making headlines before the bell: Fiserv — The fintech stock rallied more than 5% after Reuters, citing a source familiar, reported 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 . — CNBC’s Fred Imbert contributed reporting
