When U.S. regulators sued Do Kwon and Terraform Labs this week for the spectacular implosion of their UST stablecoin and related LUNA token, a huge question was left unanswered: who was the trading partner that booked $1.28 billion in profits as Terra’s $40 billion ecosystem crumbled? According to CoinDesk sources, it was Jump Crypto, a company whose parent has deep roots in conventional finance that’s become a giant in digital assets.