As a satellite designer and manufacturer, AST SpaceMobile (ASTS) plays a pivotal role in the burgeoning space economy. Subsequently, it’s one of the most relevant enterprises in the market and its performance shows. Since the start of the year, ASTS stock has gained almost 251%, a simply blistering rally. At the same time, it’s fair to wonder whether the upswing is sustainable or not. Sure, for both patient investors and near-term speculators, the rewards have been bountiful. For example, in the past five ...