Here are a few stocks to keep on your radar: 

• Shares of GTX Inc. (NASDAQ:GTXI) were up 3 cents to $3.71 in early Thursday trading following a 34% jump Wednesday sparked by an upgrade by Citi, which slapped an $8 price target on the stock.
• Check Point Software (NASDAQ:CHKP) fell 1.1% after the company beat first-quarter earnings and revenue expectations.
• Delcath (NASDAQ:DCTH) shares were up 3.6% after the company said Wednesday that it received European regulatory approval for its liver cancer drug.
• Shares of Supervalu (NYSE:SVU) gained 12% after the company beat fiscal fourth-quarter profit estimates and said its fiscal 2012 earnings and revenue would come in above current Wall Street expectations.
• Zoom Tech (NASDAQ:ZOOM) slipped 1.3% after a strong Wednesday that followed a licensing agreement with Qualcomm (NASDAQ:QCOM)