Definition
A prime broker is a financial services firm that offers hedge funds and institutional trading firms an integrated bundle of services including execution, custody, financing, securities lending, and consolidated reporting. In digital assets, prime brokerage emerged as a response to the fragmented venue landscape and pre-funding capital drag, letting clients access many venues through a single credit relationship with the prime broker rather than pre-positioning capital at every venue. Prime brokers also handle cross-margining and can reduce counterparty exposure through centralized settlement arrangements.
Example
A hedge fund trades across 10 venues through a single prime broker account. The prime broker provides unified custody, routes orders to venues on the fund's behalf, handles cross-margining, and consolidates reporting, so the fund deals with one counterparty rather than 10 venue credit relationships.
How Liquid Mercury Handles This
Mercury Pro integrates with institutional prime brokerage providers so clients can access venues through their prime broker relationship, with OMS-level reporting and risk surfaces that reflect the prime-brokered structure.