NEW YORK – ACI Worldwide on Friday said the Department of Justice has closed its antitrust investigation of its acquisition of S1 Corp., giving the final approval to the deal.
ACI has agreed to acquire S1 for approximately $360 million in cash and 5.8 million ACI shares.
The deal came after S1 had agreed to a merger with FundTech Ltd. Of Israel, but ACI offered a higher price for the Norcross, Ga., provider of back-office services for credit unions and banks.








