PCOM ---GRADE:: A+

Pre-Open Alert on PCOM on heavy volume in pre-market on news of Improved Results....

CAMPBELL, Calif. (CBS.MW) -- Shares of P-Com doubled Wednesday after the company said it could top forecasts for fourth-quarter revenue.

P-Com's (PCOM: news, chart) powered up $1.55, or 100 percent higher, to $3.09. Volume in the stock was approximately 3.6 million shares, more than triple the daily average.