J.C. Penney shares rose as much as 10.8 percent on Friday after Wall Street firm ITG Investment Research lifted its sales forecast for the department store chain, citing "improving sales trends" in five of the last seven weeks.

Penney shares were up 8.7 percent at $8.15 in afternoon trading and rose as high as $8.31. They hit a 32-year low of $6.24 last week.