Tokenized Treasuries Explained: How BUIDL, USDY and OUSG Actually Work
What's actually inside the token
Strip away the crypto branding and a tokenized treasury fund looks like a conventional short-duration government money fund with a blockchain-based transfer agent bolted on. BlackRock's USD Institutional Digital Liquidity Fund (BUIDL), launched in March 2024 and administered through the tokenization platform Securitize, invests its assets in cash, U.S. Treasury bills, and repurchase agreements, and aims to hold a stable $1 per token value while accruing daily dividends paid out as new tokens.
Ondo Finance runs the two other reference products in this category. OUSG holds shares of institutional money-market and short-duration government funds — including an allocation to BUIDL itself, alongside funds from Franklin Templeton, WisdomTree, Fidelity, and Wellington/FundBridge vehicles — plus bank deposits and USDC for liquidity. USDY is a separate note structured to pay a yield derived from short-term Treasuries and bank deposits, aimed at a wider, largely non-U.S. holder base rather than U.S. qualified purchasers.
In every case, the token is a claim on a fund's NAV, not a bearer instrument backed by the U.S. Treasury directly. If the fund administrator or transfer agent fails operationally, or if the underlying custodian has a problem, the token's value depends on how the legal structure resolves that — not on any blockchain guarantee.
Who can actually buy in, and at what minimum
Access is the first filter, and it varies sharply by product. OUSG requires completing onboarding for Ondo's Qualified Access Funds before any purchase, with an instant-transaction minimum of $5,000 and a $100,000 minimum for larger, non-instant investment requests (redemptions run $5,000 instant / $50,000 non-instant). Tokens can only sit in non-custodial wallets — externally owned accounts like MetaMask or supported multisig/Fireblocks setups — not exchange-custodied balances on platforms like Coinbase or Binance.
BUIDL is similarly gated: it is distributed exclusively through Securitize to investors who qualify and complete Securitize's onboarding, with eligibility and minimums set at the fund level rather than open to retail investors browsing an app. USDY, by contrast, was designed with a broader, primarily non-U.S. retail audience in mind, which is the practical reason the three products get discussed together but are not interchangeable — OUSG and BUIDL sit in an institutional lane, USDY in a more retail-accessible one outside the U.S.
This access structure is a securities-law artifact, not a technology limitation. The tokens are typically offered as private placements or comparable exempt structures, and issuers restrict onboarding accordingly rather than opening subscriptions to the general public.
What the yield actually is (and isn't)
The yield on these products floats with prevailing short-term Treasury rates minus a fee, not a fixed crypto APY. Third-party tracking of OUSG, for example, has shown 7-day and 30-day annualized yields in the mid-3% range with a 0.15% management fee applied to the fund (waived by Ondo through a stated date) — figures that move with Fed policy and T-bill auctions, the same way a conventional Treasury money-market fund's yield does.
That means the pitch of "stablecoin-like token, T-bill-like yield" is directionally accurate but the number is not locked in. When the Fed cuts or the yield curve shifts, these tokens reprice the same way any short-duration government fund would. Investors comparing a tokenized product's advertised yield to a bank savings rate should check the as-of date and fee drag before treating the two as equivalent.
AI agents and automated portfolio tools can pull live, machine-readable snapshots of tokenized-treasury yield and structure data through OnchainPulse's /api/rwa-yield endpoint rather than scraping issuer dashboards by hand.
Redemption, liquidity, and the operational risk that matters most
The most underappreciated risk in this category is operational, not market risk. T-bills themselves barely move in price over short holding periods; what can go wrong is the plumbing — transfer-agent downtime, a stablecoin de-peg affecting the liquidity sleeve used for instant redemptions, a smart-contract bug in the token layer, or a cutoff-time mismatch that delays settlement by a business day or more. Ondo's own investing documentation, for instance, spells out a same-day-versus-next-business-day distinction tied to a 4pm ET cutoff — a very traditional fund-administration detail wearing a blockchain UI.
Regulators have been explicit that wrapping a security in a token doesn't change its legal character. Tokenized securities are still securities, and market participants must continue to comply with existing securities laws regardless of the settlement rail — a framing regulators have repeated as tokenization volume has grown. That matters for buyers: disclosure, custody, and recourse obligations don't disappear because the fund interest is represented on-chain.
GET https://onchainpulse.theaslangroupllc.com/api/rwa-yield — x402 pay-per-query, no API key. See llms.txt.FAQ
Is a tokenized treasury fund insured like a bank deposit?
No. These are fund or trust interests, not deposit accounts, and they carry no FDIC or equivalent deposit insurance in the U.S., U.K., or Canada. Protection comes from the fund's underlying Treasury holdings and its legal structure, not from a deposit guarantee scheme.
Can a U.S. retail investor buy BUIDL or OUSG directly?
Generally no. Both are structured for qualified purchasers or accredited investors who complete onboarding with the issuer's platform, with minimums running from roughly $5,000 for instant transactions up to $100,000 for larger, non-instant investment requests. Retail-oriented tokenized dollar products exist, but they are separate offerings with different eligibility terms.
Does the token's yield ever fall to zero or go negative?
The yield tracks short-term government rates and fund fees; it can fall toward zero in a near-zero-rate environment the way any T-bill fund would, though the underlying assets themselves don't produce negative nominal yield the way some funds using derivatives can. Check the current annualized figure rather than assuming a fixed rate.
How is this different from just holding a stablecoin like USDC?
A stablecoin like USDC is designed to hold a constant $1 value and generally does not pass yield to the holder directly. Tokenized treasury products are explicitly yield-bearing fund interests whose value can tick up daily as interest accrues, and they are typically structured as securities rather than payment instruments.
Sources
- Securitize — BlackRock BUIDL Fund
- Ondo Finance — OUSG overview (docs)
- Ondo Finance — OUSG investing process (docs)
- RWA.xyz — OUSG asset data
- Ondo Finance — USDY product page