S1 Corporation (NASDAQ:SONE) achieved its new 52 week high price of $9.66 where it was opened at $9.57 UP +0.09 points or +0.94% by closing at $9.64. SONE transacted shares during the day were over 1.17 million shares however it has an average volume of 1.73 million shares.

** Aruba Networks (ARUN) posted record revenue of $113.8 Million dollars in the fourth quarter 2011, a 47% increase sequentially, while its revenue in fiscal year 2011 grew 49% to $396.5 million dollars compared with Fiscal year 2010.

**************************

** ACI Worldwide, Inc. offered to buy all outstanding shares of S1 Corporation (SONE) for $9.50 a share in a cash-and-stock transaction valued at around $540 million.

******************************

Optimer Pharmaceuticals, Inc. (NASDAQ:OPTR) announced the presentation of information from insurance claims and survey databases highlighting the unmet need for targeted therapies to treat subpopulations at high risk of recurrence of Clostridium difficile infection (CDI). The research also presented the substantial mortality and frequent complications associated with CDI.