A voice within the company is pushing for a change in ownership. When an activist investor in a company starts making noise, the clatter can help move the stock higher. That was the news that moved Forward Air (FWRD 6.39%) stock on Monday. Intrigued by the possibility of a sale at a premium price, investors piled into Forward's stock and sent its value more than 6% skyward on the day. That made it a standout on a session where the S&P 500 index landed in the red with an almost 1% decline. An activist invest ...