Argentinian fintech company Pomelo has raised $55 million in a Series C funding round led by Kaszek and Insight Partners, with participation from Index Ventures. The company plans to use the funds to enhance its credit card processing operations in Latin America, focusing on Mexico and Brazil. Additionally, Pomelo aims to launch a global credit card product denominated in stablecoins, specifically utilizing Circle's USDC. The company is also developing a cross-border, real-time agentic payment system.