Institutional trading and AI infrastructure financing platform Marble has closed an $11 million seed round led by Polychain Capital, with participation from Maven 11, Ripple, Susquehanna Crypto, Lattice, Blockwall, other venture and strategic investors, and angel investors from the AI sector. Marble operates two business lines: Marble Markets provides institutional access to digital assets, real-world assets, prediction markets, and compute trading, with plans to launch spot, lending, and derivatives trading for digital assets, block trades in prediction markets, and over-the-counter forward contracts for compute capacity. Marble Compute offers private credit financing to independent neocloud providers and GPU operators through both traditional and on-chain credit structures. The company is co-led by Matt Ballensweig, former Head of Global Trading at BitGo, and Leon Marshall, former CEO of Galaxy Digital Europe.