Plain English
A crypto prime broker consolidates trading, custody, lending, and cross-margining across multiple exchanges into one account. Coinbase Prime, Hidden Road, FalconX, Galaxy. You post collateral once; the prime broker gives you exposure across Binance, OKX, CME, Deribit, etc. without needing separate funded accounts at each.
How it actually works
The PB holds your collateral in segregated qualified custody; lines of credit at exchanges sit against your balance. Your trades execute at the underlying venue, but P&L and collateral are netted at the PB level. They also offer financing (margin loans), securities lending (borrow tokens to short), and a single tax reporting feed.
What it means for you
For HNW investors running multi-venue strategies (basis trades, market neutral, multi-leg structured products), prime brokerage is the structural unlock that turns operationally messy positions into one clean book. The minimums are usually $5–10M deployed. Below that, smaller “sub-prime” providers like B2C2 and Falcon offer a similar service with lower thresholds.
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Educational content only. Not investment, tax, or legal advice.