Bitnomial, a CFTC-regulated derivatives exchange and clearinghouse, has become the first U.S.-registered entity to accept stablecoins as margin collateral. The Chicago-based platform now permits institutional investors to use RLUSD and XRP for leveraged trading in perpetuals, futures, and options. This innovation allows institutions to maintain digital assets without converting them to fiat for margin calls, enhancing capital efficiency and operational streamlining. The move marks a significant advancement in integrating digital assets into regulated financial markets.