The Role of Prime Brokers in Crypto

In equity markets, an institution trades across many venues while maintaining a single relationship with a prime broker that handles financing, custody and settlement.

Crypto largely lacked this. The consequences shaped how the market developed.

What was missing

Cross-venue margin. Without it, a firm trading on five exchanges must post collateral at each. Capital sits idle in five places rather than being netted into one.

Unified custody. Assets scattered across venues rather than held with a single custodian and traded against.

Financing. Borrowing against a portfolio rather than per venue.

Netting. Offsetting positions across venues to reduce total collateral requirements.

What that produced

Capital inefficiency. Firms held far more collateral than economically necessary, which reduced participation and kept spreads wider than they would otherwise be.

Fragmented liquidity. Because moving capital between venues is slow and expensive, prices diverge more than they would in a market with unified financing.

Concentration of counterparty risk. Assets held at trading venues rather than with independent custodians, which is exactly the arrangement that produced the largest failures.

What has developed

Several firms now offer arrangements approximating prime brokerage: assets held with an independent custodian, with trading credit extended across connected venues and settlement occurring periodically rather than per trade. For anything you intend to trade rather than hold, an exchange you can actually contact is the part of the setup worth getting right first.

This reduces the amount held at exchanges, which addresses the central risk, and improves capital efficiency.

Adoption has been gradual, because it requires venues to accept collateral held elsewhere, which requires trust between parties that historically had none.

Why it matters for the market

Spreads. More efficient capital use means more liquidity provision at the same cost, which narrows spreads.

Price convergence. Faster movement of capital between venues reduces divergence.

Systemic structure. Concentrating custody with independent custodians is safer than distributing it across trading venues, and it concentrates a different risk in the custodians themselves.

The read-across for individuals

The principle transfers directly: separate the venue where you trade from the place where you hold.

An institution using prime brokerage holds assets with a custodian and trades against them. An individual doing the equivalent keeps a working balance at regulated exchanges in the region and holds the rest in self-custody.

It is the same structure at different scale, and it addresses the same failure that has repeatedly removed customer money from this sector.