23. Citrix Systems
Dec. 30, 2011: $60.72
Citrix's stock went on a rollercoaster ride for much of the year, but particularly in the fourth quarter when shares fluctuated from $53 up to $75, down to $58 before ending the year at almost $61. Late in the year, Citrix said it planned to make changes to its Americas Advisor Rewards Program for enterprise accounts that could impact their businesses.