Argentina-based Mobile Payments Fintech Ualá Raises $150 Million via Series C Investment Round  Crowdfund Insider. : Argentina-based mobile payments firm Ualá has been valued at almost $1 billion in its most recent investment round, which was led by Chinese tech giant Tencent, according to sources familiar with the details of the transaction. Tencent led Ualá’s $150 million Series C investment round. The Chinese internet firm was joined by the SoftBank Group Corp and various other investors. The Buenos Aires-headquartered company had previously been valued at around $850 million to $950 million, according to Bloomberg, which cited sources familiar with the deal.