MannKind Corporation (NASDAQ:MNKD) is one of the best NASDAQ stocks to buy in 2026. On December 23, MannKind Corporation secured FDA approval for the FUROSCIX On-body Infusor to treat pediatric patients weighing 43 kg or more. This expands the treatment’s existing reach beyond adults with chronic heart failure/CHF and chronic kidney disease/CKD, providing a home-based option for managing fluid buildup/edema. Earlier on December 1, MannKind Corporation (NASDAQ:MNKD) announced that the US FDA accepted for ...