| Symbol | Name | Country | Exchange |
|---|---|---|---|
| ADN | Advent Technologies Holdings, Inc. | US | NASDAQ |
| AMS | American Shared Hospital Services | US | AMEX |
| BLDP | Ballard Power Systems, Inc. | US | NASDAQ |
| CCM | Concord Medical Services Holdings Limited ADS | US | NYSE |
| PLUG | Plug Power, Inc. | US | NASDAQ |
| RDHL | Redhill Biopharma Ltd. | US | NASDAQ |
| TECFF | Teco 2030 ASA | US | OTC |
| AVO | Advanced Oncotherapy Plc | UK | LSE |
| ITM | ITM Power Plc | UK | LSE |
| PPS | Proton Power Systems Plc | UK | LSE |