A structural shift is underway in how digital markets collateralize risk. For the first time, tokenized U.S. Treasury products — led by BlackRock's BUIDL, Circle's USYC, and Ondo's OUSG — are displacing traditional stablecoins as the preferred collateral layer for institutional crypto trading. Th...
"With BUIDL now accepted as collateral on Crypto.com and Deribit, the fund is evolving from a yield-bearing token into a core component of crypto market infrastructure." — Carlos Domingo, CEO & Co-Founder, Securitize
A structural shift is underway in how digital markets collateralize risk. For the first time, tokenized U.S. Treasury products — led by BlackRock's BUIDL, Circle's USYC, and Ondo's OUSG — are displacing traditional stablecoins as the preferred collateral layer for institutional crypto trading. The tokenized Treasury market crossed $10.8 billion in early 2026, up from $3.9 billion just twelve months earlier, a 177% year-over-year expansion that dwarfs the growth rate of stablecoins over the same period.
The implications are profound. Stablecoins like USDT and USDC hold an estimated $130 billion in Treasury bills in their reserves — but pass zero yield to holders, with issuers capturing the full interest spread. Tokenized Treasuries invert this model, delivering 4–5% annualized yield directly to holders while simultaneously serving as margin collateral on exchanges including Binance, Deribit, and Crypto.com. This is not a marginal improvement. It is a $5–6 billion annual opportunity cost that institutional capital can no longer justify paying, and it is restructuring the collateral stack of decentralized finance from the bottom up.
The concept is deceptively simple. When an institutional trader posts $100 million in USDC as margin on a derivatives exchange, that capital earns nothing. Meanwhile, Circle collects approximately 4.5% annually on the Treasury bills backing that USDC — roughly $4.5 million per year per $100 million in dead collateral. Scale that across the $301 billion stablecoin market, and the aggregate opportunity cost to holders is staggering.
Tokenized Treasuries eliminate this structural inefficiency. A fund like BUIDL invests directly in short-term U.S. government securities, cash, and repos, then issues blockchain-native tokens representing fractional ownership. Holders earn the yield. When exchanges accept these tokens as collateral, institutional traders can margin their positions with an asset that appreciates daily rather than one that depreciates through foregone interest.
This is not a theoretical arbitrage. Tether reported $10 billion in profit through the first three quarters of 2025 alone, derived primarily from interest earned on its Treasury bill reserves — reserves that belong, economically, to USDT holders who receive none of it. The U.S. Treasury Department's own borrowing advisory committee flagged this asymmetry in its April 2025 report, noting that stablecoin issuers collectively held approximately 2.25% of the entire Treasury bill market.
The tokenized Treasury market has consolidated around three dominant products, each with distinct distribution strategies:
BlackRock BUIDL — tokenized by Securitize and deployed across nine blockchain networks — remains the category's anchor. BUIDL reached $2.5 billion in AUM by late 2025 and has expanded aggressively in 2026. Backed by BlackRock's $11.5 trillion asset management franchise, BUIDL carries institutional credibility that no crypto-native issuer can replicate. Its minimum investment threshold of $5 million positions it squarely as an institutional product.
Circle USYC — acquired through Circle's purchase of Hashnote in January 2025 — briefly overtook BUIDL as the largest tokenized Treasury fund on January 22, 2026, hitting $1.69 billion in AUM versus BUIDL's $1.68 billion. However, USYC's concentration risk is notable: Binance holds $1.43 billion of USYC, representing 94% of total supply. A single counterparty relationship underpins the product's market position.
Ondo OUSG — a tokenized short-term Treasury fund that invests primarily through BUIDL itself — accumulated over $1.1 billion in TVL and is expanding via a partnership with State Street and Galaxy Asset Management for a new $200 million tokenized fund called SWEEP. Ondo's OUSG and USDY products offer yields of approximately 3.75% and 3.69% respectively, with broader retail accessibility than BUIDL.
Together, the top three products account for over half of the $10.8 billion tokenized Treasury market. The remaining market share is split among Franklin Templeton's BENJI ($850 million in AUM, deployed across seven blockchain networks), Superstate, Maple, and a growing tail of smaller issuers.
On February 11, 2026, BlackRock crossed a line that most of traditional finance thought was still years away: it listed BUIDL for trading on Uniswap, the largest decentralized exchange, and purchased an undisclosed quantity of UNI governance tokens.
This was not a pilot program or a press release. BUIDL shares are now available through UniswapX, a trading system that sources quotes from whitelisted market makers — including Flowdesk, Tokka Labs, and Wintermute — and settles trades on-chain. Access remains restricted to qualified purchasers (those with $5 million or more in assets), but the mechanism is fully decentralized.
The significance is structural. BlackRock, a $11.5 trillion asset manager, is now using DeFi rails for primary distribution of a regulated security. This is the first time a fund of this scale has relied on smart-contract-based order matching and settlement rather than traditional broker-dealer infrastructure. The UNI token purchase signals that BlackRock intends to participate in the governance of the protocol it now depends on for distribution — an unprecedented integration of TradFi capital allocation with DeFi governance.
The competitive threat to stablecoins is not about technology. It is about economics.
Circle reported reserve income of $733 million in Q4 2025 on $75.3 billion in USDC circulation. That revenue comes entirely from the yield on reserves — yield that USDC holders do not share. The proposed GENIUS Act, currently moving through the U.S. Congress, would codify this asymmetry by explicitly prohibiting yield-bearing stablecoins, creating a regulatory moat around the issuers' interest income.
But the market has found a workaround. Yield-bearing stablecoins backed by tokenized Treasuries — such as Ethena's USDtb, which holds over 90% of its reserves in BUIDL — pass yield through to holders while maintaining stablecoin-like composability. USDtb is not classified as a stablecoin under the proposed framework; it is a tokenized fund share that happens to target a $1 peg.
This distinction is more than semantic. It creates a two-tier collateral market:
| Feature | Traditional Stablecoins (USDC/USDT) | Tokenized Treasuries (BUIDL/USYC/OUSG) | |---|---|---| | Yield to holder | 0% | 4.0–5.0% | | Issuer captures yield | Yes ($10B+ annually for Tether) | No (pass-through) | | Accepted as exchange collateral | Universal | Binance, Deribit, Crypto.com, FalconX | | Regulatory classification | Payment stablecoin | Security / fund share | | Minimum investment | None | $5M (BUIDL), lower for OUSG/USYC | | Redemption speed | Instant | T+0 to T+1 |
For an institutional desk running $500 million in perpetual derivatives positions, the difference between 0% and 4.5% yield on posted collateral is $22.5 million per year. That is the economic gravity pulling capital from stablecoins to tokenized Treasuries.
The collateral integration map has expanded rapidly since late 2025:
Binance began accepting BUIDL as off-exchange collateral for institutional traders in November 2025, alongside a parallel integration with Circle's USYC. Franklin Templeton's BENJI shares are also accepted through a program where collateral value is mirrored within the trading environment while assets remain in regulated custody.
Deribit and Crypto.com started accepting BUIDL as collateral in mid-2025, giving options and derivatives traders a yield-bearing alternative to cash margin. For Deribit's institutional client base — which trades over $1 billion daily in Bitcoin and Ethereum options — the yield pickup on margin collateral represents a material improvement in capital efficiency.
FalconX and Hidden Road, two of crypto's largest prime brokers, permit hedge fund clients to use BUIDL as collateral across multiple DMA venues including Binance, OKX, Bybit, and Deribit, enabling portfolio-level margin netting across all supported venues.
Each integration expands the addressable market for tokenized Treasuries while simultaneously reducing the share of total crypto collateral held in non-yielding stablecoins. The flywheel is accelerating: as more venues accept tokenized Treasuries, more institutional capital migrates, which drives more venues to add support.
The most consequential development is not exchange collateral. It is the use of tokenized Treasuries as foundational building blocks for DeFi protocols.
Ethena's USDtb demonstrates the pattern. By backing a stablecoin-like product with 90%+ BUIDL reserves, Ethena has created a composable token that can serve as collateral in DeFi lending markets while passing through Treasury yield to the underlying infrastructure. This collapses two steps — earning yield and posting collateral — into a single asset.
Ondo's OUSG is being integrated as collateral in DeFi lending protocols, enabling users to borrow against tokenized Treasury positions without liquidating the underlying asset. The yield continues accruing during the loan, making it economically superior to borrowing against non-yielding stablecoins.
This composability creates a new hierarchy: tokenized Treasuries sit at the base layer, yield-bearing stablecoins built on top of them form the second layer, and DeFi protocols that accept both as collateral form the application layer. Each level passes yield upward while maintaining the composability that makes DeFi functional.
The structural implication is that DeFi's collateral base is transitioning from crypto-native assets (ETH, BTC) and non-yielding stablecoins (USDC, USDT) to government-backed, yield-bearing instruments. This reduces systemic risk — Treasury-backed collateral does not suffer the liquidation cascades that have historically destabilized DeFi during market downturns — while simultaneously improving capital efficiency.
The migration from stablecoins to tokenized Treasuries as DeFi's collateral base layer is not a trend. It is an economic inevitability. When the opportunity cost of holding non-yielding collateral exceeds $5 billion annually and regulated alternatives exist, institutional capital will move — regardless of incumbency, liquidity depth, or regulatory classification.
BlackRock's willingness to list BUIDL on Uniswap signals that the world's largest asset manager has concluded DeFi infrastructure is robust enough for institutional-grade distribution. This is a one-way door. Once Treasury-backed collateral becomes the standard for exchange margin, DeFi lending, and stablecoin reserves, the structural demand for non-yielding stablecoins as collateral instruments will permanently decline.
The question is no longer whether tokenized Treasuries will replace stablecoins as DeFi's foundation. It is how quickly the remaining $290 billion in stablecoin collateral will be repriced by a market that has discovered it was leaving $5 billion per year on the table.