Mannkind is a pharmaceutical company developing inhaled insulin (Afrezza) to treat diabetes. The author proposes a long position in Mannkind due to its undervaluation from a previous FDA denial and competitors' failures. The author believes the stock price will rise in anticipation of a potential FDA approval of Afrezza in Q1 2014. Mannkind also presents acquisition opportunities for large pharmaceutical companies seeking new diabetes treatments. However, the stock could decline significantly if the FDA denies approval again.