Stock in Red Hat continued its torrid advance on Monday, climbing another $1.13 to close at $18.62.

The 6,5 percent increase came after Banc of America Securities changed its rating of Red Hat (Nasdaq: RHAT) to “buy” from “neutral.”

Red Hat climbed 22.5 percent on Friday to reach $17.49. That surge followed the Linux software and services firm’s quarterly earnings report on Thursday of a $4.1 million/2 cent per share profit and a surge in subscriber growth.

Red Hat: