Advent Technologies Holdings, Inc. experienced a notable decrease in short interest in June, with 71,300 shares being shorted, down 10.5% from the previous month. This shift suggests a reduced bearish outlook on the company. Furthermore, Mirae Asset Global Investments Co. Ltd. recently purchased 355,687 shares of Advent Technologies, signaling positive investor activity. The stock's performance has been volatile, opening at $3.05 and having a wide range between its twelve-month low of $2.70 and high of $30.00. Advent Technologies, a company operating in the fuel cell and hydrogen technology markets in various regions, focuses on developing and producing fuel cell systems and essential components for energy systems.