Can You Guess This Chart?

Think you know the markets? See if you can guess this stock by the chart and clues below. Answer is at the bottom. 

• This stock was upgraded to Overweight by Piper Jaffray Thursday morning, after they announced a Q4 earnings beat and Q1 guidance beat yesterday afternoon.
• Last week TheStreet published an article saying "May Catch Activist Investor Attention Amid Sector Consolidation'
• Sympathy plays include A10 Networks Inc ATEN Cisco Systems, Inc. CSCO and Radware Ltd. RDWR

Answer: F5 Networks, Inc. FFIV