Who knows Bloom Energy best -- the fuel cell company itself, or the analyst who covers it?Easy come, easy go. One month ago, Bloom Energy (BE -10.06%) stock soared 11% in a day after reporting strong sales (but a big GAAP loss) in its Q2 2024 earnings report. Today, the fuel cell stock is moving in the opposite direction, down 11.7% through 10:05 a.m. ET.You can blame investment bank Jefferies for that.Downgrading Bloom Energy stockIn a note covered on StreetInsider.com, Jefferies analyst Lloyd Byrne took B ...