In addition to Credit Suisse's upgrade, Ivanhoe Mines (IVN +22.8%) is gaining on news of Rio...

|By:, SA News Editor

In addition to Credit Suisse's upgrade, Ivanhoe Mines (IVN +22.8%) is gaining on news of Rio Tinto (RIO) upping its stake in the company by another 0.5%, to 49%. The move brings Rio's stake in Ivanhoe to the maximum allowed by a December agreement between the companies, though speculation exists Rio may buy Ivanhoe outright.