Among the stock activity stories for Monday, Dec. 31, from AP Business News:
— Shares of Facebook Inc. rose after an analyst said advertising spending was picking up on the Internet social network and raised his rating on its stock.
— Shares of Best Buy Co. rose on light volume as the struggling electronics retailer closed out a rocky year.
— Shares of Duff & Phelps Corp. rose on news that the company had agreed to be acquired.
- Investment & Company Information