https://www.reuters.com/article/us-fiserv-caixa-economica-partnership/fiserv-partners-with-brazils-caixa-economica-federal-in-card-deal-idUSKBN2CE00P >Payments company Fiserv has reached a deal with Brazilian state-controlled lender Caixa Economica Federal to offer its card services to the bank's clients, according to a securities filing on Monday.