Tokenized US Treasury bills as a sector grew from ~$5.6B to ~$19B across the trailing 12 months — a ~3.4x expansion that's one of the most aggressive structural growth stories in crypto right now. Within that, the "tokenized treasury supply" specifically (vs broader RWA) sits around $4.5B with BlackRock BUIDL leading at $1.6B (35% share), Ondo at $850M (19%), and a long tail of smaller issuers covering the rest.
What makes this interesting isn't the size — $4.5B is small relative to USDT's $135B or USDC's $58B. What's interesting is who's holding these tokens. Tokenized treasuries are eating institutional cash management, not retail stablecoin allocation. ETF issuers, corporate treasuries, family offices, sovereign wealth allocations into crypto are using tokenized treasuries instead of holding USDC and earning zero on the float.
I run a small USDY position (~3-5% of my stablecoin allocation) and watch this sector as a leading indicator of institutional crypto adoption. Below is what each major tokenized treasury product actually does, where they compete, and which one fits which use case.
The Tokenized Treasury Sector Map
Q1 2026 tokenized US Treasury supply by issuer:
| Issuer | Approx supply | Share | Access |
|---|---|---|---|
| BlackRock BUIDL | $1.6B | 35% | Institutional only (qualified purchasers) |
| Ondo (USDY + OUSG) | $850M | 19% | USDY retail-accessible (with KYC), OUSG institutional |
| Franklin Templeton BENJI | $440M | 10% | Institutional |
| Mountain Protocol USDM | $325M | 7% | Retail accessible |
| Hashnote USYC | $280M | 6% | Institutional |
| Backed bIB01/bIB02 | $215M | 5% | Retail accessible (EU-anchored) |
| Other (Maple cash, smaller issuers) | $810M | 18% | Mixed |
Total: ~$4.5B
The split between institutional-only and retail-accessible products is structurally important. Institutional products (BUIDL, BENJI, USYC) require qualified purchaser status (~$5M+ investable assets in US, similar in other jurisdictions). Retail-accessible products (USDY, USDM, bIB01/bIB02) require KYC but accept smaller minimums.
So if you're a retail user wanting tokenized treasury exposure, your real options are:
- USDY (Ondo) on multiple chains
- USDM (Mountain Protocol) with Bermuda regulation
- bIB01/bIB02 (Backed) for EU users primarily
Most of the BlackRock/Franklin/Hashnote products aren't actually accessible to most readers of this piece.
How USDY Actually Works
Ondo's USDY is the cleanest retail tokenized treasury product:
- Yield: 4.4-4.8% APY (tracks T-bill rates)
- Mechanism: Yield-bearing token that accrues value over time
- Minimum: ~$500 entry
- KYC: Required (US users excluded; non-US users with KYC can hold)
- Chains: Ethereum, Solana, Sui, Mantle, Aptos, others
- Backing: Short-duration US T-bills + cash
- Operating cost (Ondo retains): 0.15-0.25% of yield
For a non-US user wanting tokenized T-bill exposure with retail accessibility, USDY is the best product. The yield is competitive with Sky sUSDS (which pays 5.6-6% but has more complex backing structure). The chain availability is broader than alternatives. The operational cost spread is reasonable.
The catch: USDY isn't accessible to US users because of regulatory positioning. Ondo restricts US-resident access to OUSG (institutional, $100K minimum) which most retail users don't qualify for.
How OUSG and BUIDL Connect
Ondo's institutional product OUSG is interesting because it's not directly backed by treasuries — it's backed by BlackRock BUIDL. Specifically:
- OUSG composition: ~70% BlackRock BUIDL + 30% direct short-duration T-bills
- BUIDL is BlackRock's tokenized money market fund (technically a fund interest, not direct T-bill ownership)
- So OUSG holders effectively hold BUIDL through Ondo as the wrapper
This stack creates institutional-grade compliance:
- Investor holds OUSG (Ondo's product)
- Ondo holds BUIDL (BlackRock's fund interest)
- BlackRock manages the actual T-bill portfolio
- Real T-bills sit in BNY Mellon custody
Each layer adds operational simplicity for the next-up holder. Institutional traders get BlackRock-grade backing without having to onboard with BlackRock directly. They onboard with Ondo, get exposure through OUSG.
The BUIDL share of OUSG ($260M of OUSG holdings in BUIDL) represents ~16% of total BUIDL supply. So Ondo is one of BlackRock's larger BUIDL clients, which gives Ondo specific positioning leverage on operational integration.
Why This Sector Is Growing 3-4x
The tokenized treasury sector grew from ~$5.6B to ~$19B in 12 months. The drivers:
Treasury yield environment. With T-bills at 4.4-4.8%, the spread between yield-bearing tokenized treasuries and non-yield stablecoins is meaningful. Institutional cash that used to sit in USDC at 0% can sit in tokenized treasuries at 4.4-4.8% with similar operational characteristics. That's $1B+ per year of yield differential per $25B reallocated.
Institutional infrastructure maturation. BlackRock launched BUIDL in March 2024 and reached $1.6B by Q1 2026. Franklin Templeton scaled BENJI. The infrastructure that institutional treasury teams need to allocate to crypto tokenized assets has matured rapidly.
ETF cash management. Spot Bitcoin ETF issuers and other crypto fund vehicles need cash management for their settlement operations. Tokenized treasuries provide yield on that cash without exposing the fund to unwanted credit risk.
Stablecoin alternatives narrative. As regulatory clarity on stablecoins evolved, institutions started questioning whether non-yield-bearing stablecoins are the right cash equivalent. Tokenized treasuries are the obvious replacement.
Where the Sector Hits a Ceiling
The tokenized treasury sector probably can't grow indefinitely. Three structural ceilings:
KYC/accreditation requirements. Most products are institutional-only or KYC-required for retail. That's millions of potential users excluded from accessing the products. Without those constraints, the sector could be 5-10x bigger.
DeFi composability gaps. USDY can be used as DeFi collateral on some protocols but most major DeFi (Aave V3, Compound V3) doesn't accept tokenized treasuries directly. The compliance constraints on the tokens limit their integration depth.
Treasury yield dependency. All of these products' value proposition depends on T-bill yields staying around 4-5%. If the Fed cuts aggressively and yields drop to 2-3%, the differential against USDC compresses and the institutional flow reasoning weakens.
My USDY Allocation
Stablecoin allocation breakdown:
- ~60-65%: USDC (primary, US/EU compliant DeFi)
- ~25-30%: USDT (non-US CEX trading, emerging market)
- ~8-12%: Sky sUSDS (yield-bearing, RWA-backed via Sky)
- ~3-5%: Ondo USDY (yield-bearing, direct tokenized treasury)
- Smaller: Ethena sUSDe, Maple syrupUSDC
USDY specifically gets ~3-5% as a "direct tokenized treasury" allocation that's distinct from sUSDS's "Sky-routed RWA backing." The diversification is across yield mechanism (USDY = direct T-bills, sUSDS = Sky's mixed backing) rather than between two equivalent products.
If I were US-resident I couldn't hold USDY directly. I'd be limited to USDM or institutional products if I qualified. The USDM allocation would substitute for USDY at similar percentage of stablecoin allocation.
Decision Framework
Non-US user wanting yield-bearing stablecoin exposure with KYC: USDY (Ondo). Best chain availability and yield economics.
EU user wanting tokenized treasury: bIB01/bIB02 (Backed). EU-anchored regulatory positioning.
US user wanting yield-bearing stablecoin (without qualifying for institutional products): USDM (Mountain Protocol) is one of the few options. Or use Sky sUSDS as a Sky-routed alternative.
Institutional with $1M+ minimums: BlackRock BUIDL is the gold standard. Franklin BENJI is alternative. OUSG (Ondo) gives you BUIDL exposure with operational wrapper.
Anyone wanting yield without KYC complications: Sky sUSDS. Higher yield (5.6-6% vs USDY's 4.4-4.8%), no KYC, broader DeFi composability.
For most retail users I'd argue Sky sUSDS beats Ondo USDY on the math. USDY's pitch is direct tokenized T-bill exposure, but sUSDS captures similar economics through a different (and more flexible) wrapper. The exception: users who specifically want BlackRock-grade institutional exposure for compliance reasons would prefer the OUSG/BUIDL stack.
What I Watch For
T-bill yield trajectory. If yields drop materially the sector compresses. If they hold or expand, sector growth continues.
ETF issuer adoption. As more spot crypto ETFs launch (Solana ETF, multi-asset ETFs), tokenized treasury adoption for cash management scales proportionally.
DeFi composability expansion. If Aave V3 or other major lending protocols start accepting tokenized treasuries as collateral, the sector unlocks substantial additional adoption.
US stablecoin legislation passing. CLARITY Act would change the regulatory positioning between traditional stablecoins (USDC, USDT) and tokenized treasuries. Could shift institutional flow either way.
Caveats
The supply figures are from each issuer's published dashboards through April 2026; tokenized treasury supply tracking is still imperfect because some products report differently than others. The "$5.6B → $19B in 12 months" growth figure references the broader tokenized RWA category which includes more than just tokenized treasuries; treasury-specific subset is the $4.5B I described. The retail accessibility framing is general — specific KYC requirements vary by issuer and jurisdiction. None of this is financial advice — tokenized treasury products carry counterparty risk on the issuer plus interest rate risk on the underlying treasury portfolio.