Prime brokerage

Imagine Jana’s working day: she places a purchase, checks where the acquired assets are held and arranges payment. Prime brokerage helps connect these tasks. A BIS, Bank for International Settlements, study describes financing alongside market access, custody and clearing, the processing of obligations arising from trades. Each step answers a different question, however. A purchase confirmation alone does not identify who holds the assets or when they settle. The service name is therefore not a general guarantee of safety. [1]

Jana wants to separate long-term purchases from more frequent trading. Coinbase Prime organises client accounts into Organization, Entity and Portfolio: an organisation, its units and individual portfolios. A Portfolio can separate a strategy, team and permissions. Its ID identifies it in the system; that alone does not prove legal asset segregation in insolvency. Nor does Entity in the client hierarchy automatically identify the provider company that is the contractual counterparty. Jana finds that in the relevant agreement, not the compartment’s name. [2]

Jana now checks how the assets are held. Coinbase Prime documentation distinguishes, for example, Trading Balance and Prime Custody Wallet, which use an omnibus arrangement: shared custody with records for individual clients. Custodial Vault Wallet is instead described as segregated offline custody. These are different arrangements, not different kinds of bitcoin. A separate Wallet ID does not establish that the client controls the private keys, which authorise transfers through signatures. Jana therefore separates the account identifier, actual key control and contractual rights to receive the assets. [3]

For an ordinary prefunded trade, Jana needs the funds available before placing an order. Coinbase Prime also describes T+1 settlement for a portfolio with an approved credit line, meaning settlement on the following day under the service terms. An order can be placed before funds are fully settled. Borrowed credit must be repaid. The buying power figure may therefore include both the client’s funds and available credit. Opening a new portfolio does not automatically provide a loan; financing availability and terms need separate checks. [4]

Jana sees assets worth 100,000 USD in the account, but there is 60,000 USD of debt against them. In this simplified example of our own, subtracting debt leaves 40,000 USD before costs. That is neither 100,000 USD of the fund’s own money nor an automatic withdrawal limit. Coinbase Prime separates buying power from withdrawal power, the amount that can be withdrawn while maintaining required collateral. Collateral is property backing a debt. Jana therefore watches liabilities and permitted transfers, not just the total asset balance. [4]

Collateral is meant to help a lender if the borrower cannot pay. Yet it can lose value precisely when the borrower gets into trouble. BIS calls a simultaneous rise in credit exposure, the amount at risk, and the likelihood of counterparty default wrong-way risk. Falling collateral values can thus hurt a lender while the client’s ability to repay deteriorates. The question is more than whether a loan has any collateral at all. Today’s valuation does not guarantee the price in a forced sale, when selling quickly may be necessary. [1]

Two portfolios may look separate on screen while depending on the same financing or market. Another Portfolio ID does not by itself reduce total leverage, the scale of trading supported by debt, or create an independent provider. BIS describes Archegos, whose brokers did not know the full extent of positions with other banks. Jana therefore does not view each compartment in isolation: she combines debts, related positions and collateral. Who is allowed to click Buy in an account is a different question from where financial risk is concentrated. [1] [2]

Finally, Jana needs to understand how to get the assets back. At Coinbase Prime, she compares statements of assets, debts and available withdrawals with the terms of the particular service. She checks timing, fees and any provider right to reuse collateral; the name Prime brokerage alone does not establish such a right. An API is an interface through which programs communicate. It can retrieve information or submit a request, but does not itself determine claim priority, meaning who is entitled to be paid first in insolvency. Even a successful system response does not guarantee recovery of all funds. [2] [3] [4]