Among the stock activity stories for Friday, Dec. 7, from The Associated Press:
— Webster Financial Corp. announced that its biggest stockholder plans to sell 10 million shares in a public offering. Shares slid.
— Wall Street looked at hints that Amarin Corp. will market its drug Vascepa on its own, rather than with a larger drug developer. Shares dropped.
— JinkoSolar Holding Co. announced that its Swiss subsidiary reached a deal with the China Development Bank for up to $1 billion in financing over a five-year period. Shares rose.
— Shares of independent oil and gas producer Gulfport Energy Corp. fell after an analyst downgrade.