On CNBC's "Mad Money Lightning Round," Jim Cramer said a deal with Amazon Web Services is not enough for him to pull a trigger in BlackBerry Ltd (NYSE:BB).

FuelCell Energy Inc (NASDAQ:FCEL) is not as good as Plug Power Inc (NASDAQ:PLUG).

Opendoor Technologies Inc (NASDAQ:OPEN) is a good one, thinks Cramer.

American Superconductor Corporation (NASDAQ:AMSC) is a spec and it could work if this continued movement towards speculation stays strong, said Cramer.

See also: How to Buy BlackBerry (BB) Stock