Donuts

Face-Off: Tim Hortons, Rio Tinto and McAfee

With market volatility comes opportunity. Problem is, one man's gold can be another man's garbage. Here, Nikhil Hutheesing and Dan Burrows give their "thumbs-up, thumbs-down" views on three hot stocks: Tim Hortons (THI), Rio Tinto (RTP) and McAfee (MFE).