Shares of Shift4 Payments tumbled Tuesday nearly12% after the payments provider agreed to buy two companies for a combined $579 million. 

Shift4 (ticker: FOUR) is acquiring Israeli company Finaro for $525 million in upfront consideration and up to $50 million in an earnout, according to an investor presentation announcing the deal. Formerly known as Credorax, Finaro provides cross-border payments, has a large European presence, and is a European Union bank, a statement said. 

Shift4…