American Semiconductor stock skyrockets 67.4%

Shares of American Semiconductor Corp.
AMSC,
+2.44%
skyrocketed 67.4% in premarket trades Tuesday, exhibiting meme-like activity. The stock surged on trading volume of 4.7 million shares, but no apparent news. American Semiconductor shares ended Monday’s session up 2.4% on trading volume of 2.75 million shares, well above its 65-day average trading volume of just under 354,700 shares. Shares of the power grid and wind power company have risen 173.9% this year.