Coinspeaker American Fintech Firm Airfox Taken Over by Brazilian Retail Store Giant Via VarejoAirfox, a Boston based fintech company, was acquired by the Brazilian retailer Via Varejo. Two years ago the companies worked together on an online bank application banQi that shows a rise in the user number amid the coronavirus pandemic.American Fintech Firm Airfox Taken Over by Brazilian Retail Store Giant Via Varejo