What Is Rehypothecation and Why Does It Matter in Crypto?

How does rehypothecation work in traditional finance?

Rehypothecation began in securities lending and prime brokerage. When you buy stock on margin, your broker lends you money and takes the stock as collateral. Hypothecation is your pledge of that stock to the broker. Rehypothecation is the broker's next step: pledging your stock to its own lender to raise the cash it lent you, or lending it to a short seller for a fee.

Regulators allow this within limits. In the United States, a broker may rehypothecate customer securities only up to a set percentage of the customer's debit balance, and fully paid securities are protected. Rules in other markets have historically been looser. Prime brokers serving hedge funds have used rehypothecation as a core source of funding and revenue.

The failure of Lehman Brothers showed the cost. Hedge fund clients of its London prime brokerage found that assets they thought were theirs had been rehypothecated and were tangled in the estate. Recovery took years. The lesson carried into every later debate about who really owns a client's assets when the intermediary fails.

How does rehypothecation work in crypto?

In crypto, the legal and economic treatment depends on the platform's terms and account structure. Some interest-bearing arrangements transfer title or grant the platform broad rights to use customer assets, leaving the customer with a contractual claim. The platform may then lend the assets, post them as collateral or deploy them into other strategies.

Such a structure can create losses if a borrower defaults, collateral falls short or a protocol fails. Where the governing terms leave customers with unsecured contractual claims rather than ownership of specific assets, they may share in the bankruptcy process with other unsecured creditors, and recoveries can be less than the amount deposited.

The chain of exposure is often invisible to the depositor. A retail customer of one platform could be exposed, through the platform's loans, to a hedge fund's leveraged bet on a token the customer never heard of. That is what happened in 2022, when losses at a small number of trading firms rippled through platforms that had lent to them.

What happened with Celsius and BlockFi?

Celsius Network paused customer withdrawals in 2022, citing extreme market conditions, and filed for Chapter 11 bankruptcy protection shortly afterward. Court filings showed that customer deposits under its Earn program were treated as Celsius's own property under its terms of use, and had been deployed into loans, DeFi positions and its own trading. The bankruptcy court later agreed that Earn assets belonged to the estate, not to the customers.

BlockFi filed for Chapter 11 in 2022 following significant exposure to FTX and Alameda and broader market stress. Its interest-account business involved lending crypto assets to institutional borrowers. Earlier that year, BlockFi settled with the SEC and state regulators concerning the offer and sale of its interest accounts.

In both cases, the ability to use customer assets was one component of the business model, but it was not the only cause of loss. Risk management, concentrated exposures, contractual ownership terms and other firm-specific circumstances also affected customer outcomes.

How can you tell if a platform rehypothecates your crypto?

Read the terms of service, specifically the sections on ownership, title and use of assets. Language to look for includes phrases such as the platform having the right to pledge, repledge, hypothecate, rehypothecate, sell, lend, or otherwise transfer or use any amount of your digital assets. Terms that say title to your assets passes to the platform, or that your deposit is a loan to the platform, mean you own a claim, not the coins.

Additional diligence points include unusually high stated rates, whether a custodian is identified, whether assets are held in omnibus or segregated accounts, and whether the provider discloses where assets may be deployed. These factors should be evaluated together with the governing agreements and risk disclosures.

Protective language looks different. It states that assets are held in a segregated account titled to you, names the custodian, states that the platform will not pledge or lend your assets for its own account, and describes what would happen to your assets if the platform failed.

What does no rehypothecation actually mean?

A no-rehypothecation policy generally means the platform does not pledge client assets as collateral for its own borrowing, lend them for its own revenue or use them for proprietary trading. Whether assets remain in a client-titled custody account or move to a venue, protocol or counterparty depends on the authorized strategy and governing documentation.

That structure is designed to reduce the risk that client assets are treated as the platform's proprietary assets. It does not by itself determine bankruptcy treatment, which depends on account titling, custody arrangements, contractual terms and applicable law. Qualified custody and segregation can provide additional structural protections but do not eliminate insolvency risk.

It does not protect against everything. If you choose a strategy that deposits stablecoins into a lending protocol, the protocol can fail. If a strategy posts collateral at an exchange, the exchange can fail. Those are strategy risks you have chosen and that should be disclosed to you. The policy also does not protect against price declines, fraud at the custodian, or losses inside the strategy itself.

Does Abra rehypothecate client assets?

No. ACM does not use client assets for its own borrowing, proprietary lending or proprietary trading. Eligible undeployed assets may be held in separately managed accounts titled to the client with Fireblocks Trust Company, LLC, using Fireblocks technology as part of the operational infrastructure. Assets deployed to an authorized strategy may leave that custody environment and become subject to the applicable venue, protocol or counterparty arrangements.

The applicable advisory agreement and disclosures describe how client assets may be used, and custody records identify assets maintained with the custodian. ACM's Form ADV also describes material custody arrangements and is publicly available through the SEC's adviser database. Abra Capital Management, LP is an SEC-registered investment adviser; registration does not imply a certain level of skill or training.

Abra's strategies do take on risk, including exchange and protocol exposure inside the strategies you choose. Those are disclosed as strategy risks. The methodology page explains each mechanism and the risks that go with it.

Is no rehypothecation enough on its own?

No. It removes one failure mode. It says nothing about whether the strategies themselves are sound. A platform can honestly avoid rehypothecation and still deposit your assets into a poorly audited protocol, hold them at a fragile exchange, or run a hedge that fails in a volatile market.

Evaluate the custody model: who holds the keys, how the keys are protected, and whether accounts are segregated and titled to you. Evaluate regulatory status: whether the firm is registered, with whom, and what that registration obliges it to disclose and to do. Evaluate counterparty vetting: how the firm chooses exchanges and protocols, what limits it sets, and what happened to its positions in past stress events.

Ask about insurance and attestations, and read what they actually cover. Ask how the firm reports to you and how often. A no-rehypothecation policy may reduce one source of balance-sheet exposure, but it does not replace diligence on custody, counterparties, strategy risks, insurance and reporting.

How should you evaluate a yield platform's rehypothecation risk?

Work through a diligence checklist before depositing. Seek written answers regarding ownership, custody, permitted use of assets, counterparties and insolvency treatment, and compare those answers with the governing agreements and disclosures.

Finish with the yield itself. Where does the return come from, mechanism by mechanism? Does the rate make sense given those mechanisms, or does it imply hidden leverage? If the platform became insolvent tomorrow, would your assets be part of its estate, and would you be an owner of specific property or an unsecured creditor?

• Who holds legal title to my assets once deposited?
• Are they held in an account in my name or in an omnibus wallet?
• Who is the custodian, and can I verify that relationship independently?
• Does the agreement give the platform the right to pledge, lend or use my assets for its own account? If so, under what limits?
• Has the platform published what happened to client assets during past market stress?
• Is it regulated, by whom, and where can I read its filings?
• Where does the yield come from, and does the rate make sense for that mechanism?