- It's that time again! "Mad Money" host Jim Cramer rings the lightning round bell, which means he's giving his answers to callers' stock questions at rapid speed.
Fuelcell Energy: "Fuelcell is not as good as Plug [Power]. ... but what matters is they have enough money to be able to get it to where [green] hydrogen fuel ... can be a legitimate fuel, and nobody else really does."
Opendoor Technologies: "I think you've got a good one and I am not going against it."
American Superconductor: "American Superconductor is going to work if this continued movement toward speculation stays strong."