We’re about 6 weeks into 2012 and already some athletes are making a big impact on the MVPExchange market. As of tonight 6 NBA players stocks have each gone up over 30%. Some are who you thought they might be, others maybe not. Here are the those top 6 stocks: 1. Ricky Rubio +38.43% —  aka Rrrrrrricky Rrrrrrrrubio (my best