Russia and CIS-focused private equity firm Baring Vostok Capital Partners, along with Stockholm Stock Exchange-listed investment company Vostok Emerging Finance (VEF), has agreed to invest up to US$20 million in Russia-based retail payment solutions specialist Revo Technologies and digital marketing services provider Sorsdata. VEF had previously invested in the two companies in 2015 and will contribute up to US$5 million of the total investment amount in the round.