mira - A fair question. My goal is to make money in alt fuel stocks which are being Hyped or are already over-valued.
Many of these stocks are merely glorified Science Fair projects, with little or no real world economics or market value , FCEL, HYLN, HLGN, WPRT, PLUG and even TESLA are all great examples of HYPE (PUMP) and DUMP stocks which I have enjoyed. If you click on my "boards posted on link" you can see that many of the stocks I have tracked are already out of business BPZ, FSYS, REGI, etc.
As for real hydrogen company investments you have heard me say before: Cummins, Linde, Bosch, Etc.