Vantiv, the largest acquirer in the U.S. based on transaction processing volume, is now a significant global competitor as well, following the $9.9 billion dollar acquisition of UK-based WorldPay, who has over 400,000 processing clients across 146 countries. It was announced on July 5th that Vantiv would acquire global processor WorldPay for $9.9 (£7.7) billion
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