Fiserv Has Largest U.S. Marketshare of Top Bank Core Processors

, FIS, and Jack Henry all come to mind when thinking of the top . But what is each firm’s market share in the U.S. last year? According to data gathered by, the top processor is Brookfield, Wis.-based Fiserv. With more than 37% of the market share, Fiserv is well ahead of [&;]
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