Stablecoin Issuers as Money Market Funds

A fiat-backed stablecoin issuer takes deposits, issues redeemable claims, and invests the proceeds in short-term instruments. That is functionally a money market fund with a token as the share class.

The comparison clarifies several things.

The business model

Deposits come in and are invested in short-dated government debt and cash equivalents. The issuer keeps the yield.

Holders receive no interest. That is the entire economics: the issuer earns the short rate on the full reserve and passes none of it on.

When short rates are near zero, this is a modest business. When they are substantially positive, an issuer holding a large reserve earns a great deal.

Why the comparison to a fund is useful

The risks are the same category. Reserve composition, duration, counterparty exposure at custodian banks, and the ability to meet redemptions under stress.

The failure mode is the same. A money market fund fails when it cannot meet redemptions at par. A stablecoin depegs for exactly that reason.

The oversight is converging. Regulatory frameworks introduced in major jurisdictions require reserve composition rules, redemption rights and disclosure. These are money market fund rules applied to a new wrapper.

Where the comparison breaks

Holders receive no yield. A money market fund distributes its return. A stablecoin issuer keeps it.

Redemption is restricted. Most retail holders cannot redeem directly with the issuer. The peg is maintained for them by arbitrageurs and exchange liquidity rather than by a right they hold.

Freeze capability. Major issuers can freeze specific token balances. No money market fund can do the equivalent to a shareholder’s units.

Settlement. Transfers settle on-chain in minutes, continuously, which is the actual innovation and the reason the products exist.

The concentration question

A small number of issuers account for the overwhelming majority of stablecoin supply. Their reserves sit with a small number of custodian banks and asset managers.

The March 2023 episode demonstrated the consequence: a major stablecoin traded well below its peg for approximately two days when a portion of its reserves sat at a bank that failed over a weekend.

The token behaved exactly as a claim on a bank deposit behaves when the bank fails, which is what it was.

What a holder should check

Reserve composition in the most recent attestation, the firm performing it and its frequency, the regulatory framework the issuer operates under, and whether direct redemption is available to you. A related option here is an OTC crypto desk with a named counterparty.

Most holders will find the answer to the last question is no, which means the practical exit runs through a venue. Whether a stablecoin can be converted to currency at a given platform is published by venues including a venue that handles institutional crypto allocations, and that availability is what makes it usable as an exit rather than only as trading collateral.