Untangled Prime is a cross-chain prime brokerage platform for institutional asset allocators to track, allocate, trade, borrow and hedge from one account. We are solving the RWA distribution and composability problems that today keep allocator positions siloed across chains and venues. Our wedge, Portfolio, is a single read-only view of all positions and risk across chains (EVM and Stellar, Solana next), with protocol risk monitoring (RMS, live on Blend), an agent-powered risk report on demand, and agent-researched RWA opportunities - a low-risk way for allocators to explore and trust Prime before they execute. At Open House we shipped Robinhood Chain support, so curators can explore tokenized US stocks right next to their on-chain positions. The full platform - allocate, trade, borrow and hedge - gets a separate demo.