Plug Power stock just flashed a warning sign: May 11 will be key
Plug Power stock price has recoiled in the past few days, moving from the year-to-date high of $3.45 to the current $3.13. This pullback has ended a relatively strong rally that pushed it from a low of $1.73 to the year-to-date high of $3.42. Plug Power to publish its earnings on May 11 Plug Power,
