#Visa stock tumbles after report of debit card probe
“#Visa stock tumbles after report of debit card probe” Visa’s stock price slid Friday as the card giant confirmed that the feds are probing whether it has used anticompetitive practices to maintain its dominance in the debit-card market. Shares in the payment processor tumbled 6.2 percent to close at $206.90 after the Wall Street Journal…