this stock has been a highly volatile one this month. Shares...

$Insignia Systems(ISIG.US)$ this stock has been a highly volatile one this month. Shares of ISIG stock opened the month around $5 per share. This stock then soared to more than $35 per share, before deflating toward the $10 level. Today’s rise of more than 80% has brought ISIG stock back above the $20 level.