Decentralized Finance (DeFi), leveraging blockchain technology, has broken traditional barriers to finance, particularly around restrictions on who can access the financial markets. However, supporting non-custodial margin trading that is available to anyone is still a challenge. We’re building Primex, the new prime brokerage liquidity protocol for DEX-agnostic cross-margin trading with trader scoring mechanisms. In Primex, lenders provide liquidity to pools where traders can use it for leveraged trading, lenders, in their turn, have a possibility to earn higher yields compared to lending protocols, as the interest is generated from margin fees and profits of successful trades.