Have you been paying attention to shares of MannKind (MNKD) ? Shares have been on the move with the stock up 10.1% over the past month. The stock hit a new 52-week high of $7.15 in the previous session. MannKind has gained 94.2% since the start of the year compared to the 3.1% move for the Zacks Medical sector and the -2.7% return for the Zacks Medical - Biomedical and Genetics industry.What's Driving the Outperformance?The stock has an impressive record of positive earnings surprises, as it hasn't missed o ...