Capital One Merchant Services, the 37th largest U.S. acquirer, has signed a long-term revenue sharing agreement with Vantiv, the 4th largest U.S. acquirer. Vantiv has been providing acquiring processing services for Capital One’s small business merchants and cardholder account processing for debit cards issued by Capital One. The new agreement adds complete EMV-compliant credit and debit card processing and related support services for all active Capital One merchants. Last year, those merchants handled $6.19 billion in Visa and MasterCard card payments and another $1.20 billion in Ame...