Circle USYC — The Yield-Bearing Collateral Standard

FundSmart RWA Intelligence Deep-Dive Report

Report Date: October 2, 2026 Author: FundSmart RWA Intelligence Report Type: Deep-Dive Tier Access: Free

Disclaimer: FundSmart RWA Intelligence provides independent general market commentary for educational purposes only. It does not constitute investment advice, an offer to buy or sell securities, or a solicitation. Always do your own research.

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Executive Summary

Circle's USYC (US Yield Coin) has emerged as the single largest tokenized U.S. Treasury product on-chain, surpassing BlackRock's BUIDL fund in early 2026 and maintaining that lead through Q3. As of October 2026, USYC holds approximately $2.4 billion in assets under management, compared to BUIDL's $2.2 billion, making it the dominant force in a tokenized Treasury market that has grown to roughly $10 billion total.

USYC's ascent is not a brand story — it is a structural one. The product won because of three mechanical advantages: a lower minimum investment ($100,000 vs. BUIDL's $5 million), an accumulating yield structure that integrates cleanly into automated collateral systems, and native integration with Circle's USDC infrastructure enabling atomic USYC-to-USDC redemptions. When Binance added USYC as off-exchange collateral for institutional derivatives in July 2025 — four months before BUIDL received the same treatment — it cemented USYC's position as the default yield-bearing collateral in crypto-native markets.

The Circle acquisition of Hashnote in January 2025 transformed USYC from a promising but niche product into a strategic asset inside the world's second-largest stablecoin ecosystem. With USDC at ~$60+ billion in circulation and USYC as its yield-bearing counterpart, Circle has built an integrated cash-and-yield stack that no competitor can replicate without owning both sides of the equation.

Key Metrics (October 2026):

• AUM: ~$2.4B (largest tokenized Treasury on-chain)
• Chains: Ethereum, Sui, Canton Network
• Underlying: Short-term US Treasury bills + overnight reverse repos
• Yield mechanism: NAV appreciation (accumulating)
• Minimum investment: $100,000 USDC
• Access: Qualified non-US investors, US qualified purchasers
• Redemption: Atomic USYC → USDC conversion via Circle
• 30-day growth (at time of flip): +11% vs. BUIDL -2.85%

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1. Product Overview

What Is USYC?

USYC is the on-chain token representing shares of the Hashnote International Short Duration Yield Fund Ltd. (SDYF), a Cayman-domiciled offshore feeder fund. The fund invests exclusively in short-term US Treasury bills and overnight reverse repurchase agreements, maintaining an intentionally narrow portfolio designed to behave like cash with minimal duration risk.

The token accrues yield through net asset value (NAV) appreciation rather than distributing coupons. This means the USYC token price increases over time as Treasury yields and repo rates accrue, rather than holders receiving separate interest payments. RWA.xyz categorizes this as an "Accumulating" income structure, in contrast to BUIDL's "Distributing" model.

The Circle Acquisition

Circle announced the acquisition of Hashnote on January 21, 2025. At the time, USYC had approximately $1.52 billion deployed. The strategic logic was straightforward: Circle already operated USDC, the second-largest dollar stablecoin, and Hashnote owned one of the largest tokenized Treasury products. Bringing them under one roof created a native yield-bearing instrument that institutional USDC holders could move into and out of without leaving Circle's ecosystem.

Post-acquisition, USYC and USDC effectively sit on the same operational infrastructure. An institutional treasury holding USDC can subscribe into USYC to capture money market yield, then redeem back to USDC when liquidity is needed for payments or settlement. Circle has publicly framed this as a "24/7 cash-and-yield pair" for institutional users.

Multi-Chain Strategy

USYC operates across three blockchains, each serving a distinct institutional audience:

| Chain | Purpose | |-------|---------| | Ethereum | Default settlement layer for institutional on-chain treasury products and DeFi integrations | | Sui | High-throughput Move-based chain for non-EVM environments and structured product integration | | Canton Network | Privacy-preserving network for traditional capital markets infrastructure (DTCC, major banks) |

This deployment strategy lets Circle meet institutions where they already operate. An EVM-native fund subscribes on Ethereum. A market-making desk using Canton's privacy model settles on Canton. A Sui-native venue wiring tokenized collateral into derivatives sits on Sui. The fund is the same; the rails are different.

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2. Market Positioning

The Tokenized Treasury Landscape

The tokenized U.S. Treasury market crossed $10 billion in early 2026, up from under $1 billion in early 2024. This represents a 10x expansion in two years, driven by institutional demand for on-chain dollar yield and the maturation of collateral infrastructure.

The category is now dominated by four products:

| Product | Issuer | AUM (Oct 2026) | Wrapper | Min. Investment | |---------|--------|-----------------|---------|-----------------| | USYC | Circle/Hashnote | ~$2.4B | Cayman feeder fund | $100,000 | | BUIDL | BlackRock/Securitize | ~$2.2B | US 1940 Act MMF | $5,000,000 | | BENJI | Franklin Templeton | ~$2.5B | US 1940 Act MMF | $20 | | OUSG/USDY | Ondo Finance | ~$1.3B | Layered structure | Varies |

USYC's #1 position by AUM is notable, but its structural advantages are more important than the headline number.

Why USYC Won: Three Structural Advantages

1. Access Funnel BUIDL restricts access to US Qualified Purchasers — requiring $5 million in investable assets for individuals or $25 million for entities — with a $5 million minimum investment. USYC targets qualified non-US investors and US qualified purchasers with a $100,000 minimum. This opens USYC to a dramatically broader addressable market: offshore institutions, family offices, trading firms, and crypto-native funds that cannot meet BUIDL's Qualified Purchaser threshold.

2. Accumulating Yield Structure USYC's NAV appreciation model means yield compounds within the token balance automatically. BUIDL distributes returns separately. For collateral systems — especially automated margin and derivatives infrastructure — an accumulating structure is operationally cleaner. Set-and-forget balances that compound without requiring handling of separate payouts integrate more seamlessly into collateral automation. This is not cosmetic; it is mechanical, and it matters at scale.

3. USDC Integration as Distribution USYC's atomic redemption into USDC via Circle's infrastructure gives it a distribution moat that no competitor can replicate without owning a major stablecoin. Institutions already routing stablecoin flows through Circle can onboard USYC without building new operational pathways. The cash-to-yield-to-cash loop stays within one ecosystem.

The Binance Catalyst

On July 24, 2025, Binance announced that institutional customers could hold USYC as off-exchange collateral for derivatives, with custody through Banking Triparty or Ceffu and near-instant redemption into USDC. BUIDL was added to Binance's collateral list on November 14, 2025 — nearly four months later.

That sequencing was decisive. If the cash collateral stack is built first inside prime brokerage and derivatives workflows, the product that integrates earlier captures the flow. USYC didn't just get listed; it got embedded into the operational layer where institutions manage margin and collateral automation.

The DRW/Cumberland Partnership

Alongside the Hashnote acquisition, Circle announced a strategic partnership with global trading firm DRW, whose subsidiary Cumberland provides liquidity and settlement capabilities for USDC and USYC. This partnership deepens USYC's institutional distribution through one of the largest crypto-native trading desks, ensuring that subscription and redemption flows have professional market-maker support.

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3. Team and Background

Circle Internet Financial

Circle was founded in 2013 by Jeremy Allaire and Sean Neville. It is one of the longest-standing companies in digital assets, having pivoted from a Bitcoin exchange to a stablecoin infrastructure provider. Circle issues and operates USDC, the second-largest USD stablecoin by circulation (~$60B+ as of October 2026).

• Jeremy Allaire — Co-Founder and CEO. Serial technology entrepreneur; previously founded Brightcove (NASDAQ: BCOV). Longstanding advocate for digital currency regulation and stablecoin clarity.
• Sean Neville — Co-Founder. Previously led product and technology strategy.
• Disu Liu — CFO. Joined from Goldman Sachs, bringing institutional finance rigor to Circle's treasury operations.

Circle went public via IPO in 2025, providing public market transparency into its financials and USDC reserves — a meaningful differentiator for institutional counterparties evaluating counterparty risk.

Hashnote

Hashnote was founded as a digital asset management firm specializing in tokenized Treasury products. The team brought traditional fund management expertise and regulatory experience to the construction of USYC's fund structure. Post-acquisition, Hashnote operates as a Circle subsidiary, maintaining the fund management and operational infrastructure for USYC.

Key Partners

• DRW / Cumberland — Strategic partner providing institutional liquidity and settlement for USYC and USDC
• Binance — Off-exchange collateral integration for institutional derivatives
• Canton Network — Privacy-preserving settlement infrastructure for traditional finance counterparties

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4. Fund Structure and Tokenomics

Legal Structure

USYC represents shares of the Hashnote International Short Duration Yield Fund Ltd., a Cayman Islands-domiciled offshore feeder fund. This is a critical structural distinction:

• Not a US 1940 Act money market fund — unlike BUIDL and BENJI, which are registered under the Investment Company Act of 1940
• Cayman feeder structure — designed for qualified non-US investors and US qualified purchasers
• Permissioned access — wallets must be onboarded through Hashnote's KYC and qualified investor screening

The legal claim runs through the Cayman fund vehicle rather than directly to the underlying Treasury securities. This introduces an additional layer of structural complexity compared to directly registered US funds, but also provides flexibility for international distribution.

Underlying Assets

The fund maintains a concentrated portfolio:

• Short-term US Treasury bills — the primary holding, providing direct US government credit exposure
• Overnight reverse repurchase agreements — short-term cash lending against Treasury collateral, providing additional yield with minimal duration

The portfolio is designed to behave like cash. Duration is extremely short (days to weeks), and counterparty exposure is limited to the US Treasury market and bank repo counterparties. NAV moves daily as Treasury yields and repo rates accrue.

Yield Mechanism

| Feature | USYC | BUIDL | |---------|------|-------| | Income structure | Accumulating (NAV appreciation) | Distributing (separate payouts) | | Yield source | US Treasury bills + reverse repos | US Treasuries + cash | | Token price | Increases over time | Stable at $1, yield paid separately | | Collateral integration | Set-and-forget (balance compounds) | Requires handling of separate distributions |

The accumulating structure has a practical advantage in collateral systems: the token balance itself reflects total value, so margin calculations don't need to account for separately distributed income. This is a small mechanical difference with real operational consequences at scale.

Redemption Mechanics

Post-Circle acquisition, USYC redemption flows through Circle's infrastructure:

• Institutional holders can convert USYC to USDC atomically, subject to fund cut-off times
• USDC can then be redeemed for USD via Circle's standard rails
• This contrasts with traditional fund redemptions that end in a bank wire 1-2 business days later

The USYC → USDC → USD path provides a faster, more flexible redemption experience than typical fund structures, though institutional users should verify current cutoff times, minimums, and operational windows in Hashnote's offering documents.

Minimum Investment

• USYC: $100,000 USDC
• BUIDL: $5,000,000 USDC
• BENJI: $20

USYC sits in a middle ground — accessible enough to capture a broad institutional market, but high enough to maintain a professional investor base. This $100K threshold opens USYC to family offices, mid-size trading firms, and crypto-native funds that BUIDL's $5M minimum excludes.

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5. Risk Assessment

Fund-Level Risks

Low but non-zero credit risk. The underlying portfolio holds US Treasury bills — the global benchmark for risk-free assets — and overnight reverse repos collateralized by Treasuries. Credit risk is minimal in theory but not zero: repo counterparties introduce a layer of counterparty exposure, and the fund's NAV depends on the accuracy of pricing and valuation.

Duration risk. The fund is intentionally short-duration, but rising Treasury yields could modestly impact the portfolio's mark-to-market value. In practice, overnight reverse repos and short-dated T-bills have minimal price sensitivity to rate changes.

Structural Risks

Cayman fund wrapper. USYC's legal claim runs through a Cayman Islands feeder fund, adding jurisdictional complexity. Investors in USYC hold shares in an offshore fund, not a direct claim on Treasury securities. This introduces:

• Cayman regulatory framework rather than US SEC oversight
• Potential complications in enforcement or dispute resolution
• Additional layers between the investor and the underlying assets

Permissioned access. While KYC/AML screening is a feature for institutional investors, it introduces operational dependency on Hashnote's onboarding process. Changes to eligibility criteria or onboarding requirements could affect access.

Infrastructure Risks

Smart contract risk. USYC tokens exist on three chains (Ethereum, Sui, Canton). Each deployment carries its own smart contract risk. A vulnerability or upgrade failure on any chain could affect token operations.

Circle operational dependency. USYC's value proposition depends on Circle's infrastructure functioning correctly — for subscriptions, redemptions, NAV calculations, and USDC integration. Circle's IPO in 2025 provides public financial transparency, but operational concentration in a single entity is a structural consideration.

Canton Network maturity. The Canton Network is newer and less battle-tested than Ethereum. While it is backed by significant traditional finance participants, its operational track record at scale is still developing.

Competitive Risks

BUIDL counterattack. BlackRock is not passive. BUIDL has periodically reclaimed the #1 position by AUM during 2026, and BlackRock's brand and distribution power remain formidable. Securitize's infrastructure and BlackRock's institutional relationships could drive BUIDL growth through traditional finance channels that USYC's crypto-native positioning doesn't reach.

Regulatory changes. The SEC's Innovation Exemption (September 2026) and evolving stablecoin regulations could reshape the competitive landscape. Products that benefit from new regulatory frameworks could rapidly gain ground.

BENJI's retail accessibility. Franklin Templeton's BENJI has a $20 minimum and the broadest chain footprint, positioning it to capture retail and smaller institutional flows that USYC's $100K minimum excludes. As the market broadens beyond institutional players, BENJI's accessibility could become a significant advantage.

Risk Score

| Risk Category | Level | Notes | |---------------|-------|-------| | Credit risk | Very Low | US Treasuries + repo, government-backed | | Duration risk | Very Low | Overnight to short-dated T-bills | | Structural risk | Medium | Cayman feeder adds jurisdictional complexity | | Smart contract risk | Low-Medium | Three chain deployments, each audited but different | | Counterparty risk | Low | Circle (public co.), DRW/Cumberland, repo counterparties | | Liquidity risk | Low | Atomic USYC→USDC redemption, institutional depth | | Regulatory risk | Low-Medium | Cayman structure, evolving tokenized fund regulations | | Competitive risk | Medium | BUIDL and BENJI have strong institutional backing |

Overall Risk: Low-Medium. USYC carries minimal credit and duration risk through its Treasury/repo portfolio. The primary risks are structural (Cayman wrapper), operational (Circle dependency), and competitive (BlackRock counterattack). For an institutional allocator, USYC represents one of the lower-risk tokenized Treasury products, with the main tradeoff being the offshore structure versus a US-registered fund.

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6. Competitive Analysis

USYC vs. BUIDL: The Core Rivalry

The USYC-BUIDL rivalry defines the tokenized Treasury market. Both target institutional on-chain dollar yield from US Treasuries, but their approaches differ fundamentally:

| Dimension | USYC | BUIDL | |-----------|------|-------| | Issuer | Circle/Hashnote | BlackRock/Securitize | | AUM (Oct 2026) | ~$2.4B | ~$2.2B | | Wrapper | Cayman feeder fund | US 1940 Act MMF | | Min. investment | $100,000 | $5,000,000 | | Income | Accumulating (NAV) | Distributing (coupons) | | Chains | Ethereum, Sui, Canton | Ethereum, 7+ chains | | Redemption | Atomic → USDC | Convertible to USDC (via Circle integration) | | Target market | Non-US + US qualified purchasers | US qualified purchasers | | Collateral use | Binance off-exchange collateral | Binance off-exchange collateral (added later) | | Stablecoin pairing | Native USDC integration | USDC convertible, but no native stablecoin |

USYC's advantages: Lower entry barrier, accumulating structure ideal for collateral, native USDC integration, non-US accessibility, earlier Binance collateral integration.

BUIDL's advantages: US-registered fund (stronger legal framework for US investors), BlackRock brand and distribution, broader chain footprint, larger traditional finance network.

USYC vs. BENJI: The Accessibility Gap

Franklin Templeton's BENJI (FOBXX) is a US-registered 1940 Act money market fund with a $20 minimum and deployments across more chains than any competitor. While USYC targets institutional non-US investors and US qualified purchasers, BENJI captures retail and smaller institutional flows. The two products serve different market segments and are more complementary than competitive.

BENJI's $2.5B AUM gives it the largest individual fund AUM in the category, but its retail distribution model means it doesn't compete directly with USYC for institutional collateral use cases.

USYC vs. OUSG/USDY: The Ondo Layer

Ondo Finance's OUSG (institutional Treasury token) and USDY (yield-bearing stablecoin) offer a different value proposition. OUSG uses BUIDL and other institutional MMFs as part of its underlying structure, creating a layered product. Ondo's multi-chain DeFi composability and broader product suite (including Ondo Stocks for tokenized equities) provide ecosystem breadth that USYC's focused single-product approach doesn't attempt.

For pure institutional cash management and collateral use, USYC's direct Circle integration is cleaner. For DeFi-native users seeking composability and a broader tokenized asset platform, Ondo offers more optionality.

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7. Growth Outlook

Catalysts

1. USDC ecosystem expansion. As USDC circulation grows (currently ~$60B+), the addressable market for USYC as the native yield-bearing counterpart grows proportionally. Every new institutional USDC user is a potential USYC subscriber.

2. Collateral infrastructure buildout. If more exchanges replicate Binance's off-exchange collateral model, USYC's early integration advantage compounds. Each new venue that accepts USYC as collateral creates incremental demand.

3. Canton Network adoption. As DTCC and traditional finance infrastructure migrate settlement to Canton, USYC's Canton deployment positions it as the default Treasury token for institutional TradFi flows that require privacy-preserving settlement.

4. SEC Innovation Exemption. The September 2026 SEC Innovation Exemption creates a 5-year sandbox for on-chain securities trading. While primarily targeted at tokenized equities, the broader regulatory clarity benefits all tokenized financial products, including Treasury funds.

5. Stablecoin yield gap. With stablecoin yields near zero, tokenized Treasuries offer risk-free on-chain rate without exiting crypto rails. As institutional stablecoin holdings grow, the demand for yield-bearing alternatives increases structurally.

Headwinds

1. BUIDL counterattack. BlackRock has the distribution power and institutional relationships to push back. BUIDL's periodic reclamation of the #1 AUM position shows this is an ongoing battle, not a settled outcome.

2. Fee compression. As more tokenized Treasury products compete, fee compression is inevitable. BENJI already offers the lowest fees in the category. USYC's fee structure will face pressure.

3. Regulatory uncertainty for Cayman structures. While the Cayman wrapper provides international distribution flexibility, evolving global tax transparency and fund regulation could create headwinds for offshore structures.

4. Multi-chain fragmentation risk. Operating on three chains adds operational complexity. If one chain underperforms or faces issues, it could fragment USYC's liquidity and user experience.

Projections

If current trends hold:

• Conservative scenario: USYC reaches $3.5-4B AUM by mid-2027, maintaining its #1 position as collateral integration expands
• Base scenario: USYC reaches $4-5B AUM by mid-2027 as Canton adoption accelerates and USDC-locked collateral demand grows
• Bull scenario: USYC reaches $6B+ AUM if collateral flywheels accelerate across multiple exchanges and Canton becomes a primary settlement layer for institutional flows

The tokenized Treasury market as a whole could reach $20-25B by mid-2027 under conservative assumptions, with the bull case at $40-60B if collateral infrastructure scales rapidly.

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8. Conclusion

Circle's USYC has established itself as the most structurally advantaged tokenized Treasury product in the market. Its #1 AUM position is not a marketing victory but a mechanical one — the product of lower access barriers, an accumulating yield structure suited for collateral automation, and native integration with the world's second-largest stablecoin.

The investment thesis for USYC is fundamentally about positioning in the institutional crypto cash management stack. Circle has built something that no competitor can replicate without owning both a major stablecoin and a tokenized Treasury fund: a seamless cash-to-yield loop that operates 24/7, settles atomically, and integrates into the collateral infrastructure where institutional capital actually flows.

However, this is not a winner-take-all market. BUIDL remains a formidable competitor with BlackRock's institutional distribution power and a US-registered fund structure that many regulated entities prefer. BENJI's retail accessibility gives it the broadest reach. And Ondo's ecosystem approach offers DeFi composability that USYC's focused single-product model doesn't attempt.

For institutional allocators evaluating tokenized Treasury products, the decision framework is wrapper-first:

• Need a US-registered 1940 Act fund? BUIDL or BENJI
• Need the tightest cash-to-yield loop with USDC? USYC
• Need multi-chain DeFi composability? OUSG/USDY
• Need the lowest minimum? BENJI ($20)
• Need non-US accessibility with institutional scale? USYC ($100K)

USYC's structural advantages — the accumulating collateral model, USDC integration, and the $100K entry point — align with how institutional crypto capital actually operates. That alignment, more than any single feature, explains why USYC overtook BUIDL and why it is positioned to maintain its lead in the evolving tokenized Treasury market.

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Key Takeaways

1. USYC is the largest tokenized Treasury product on-chain at ~$2.4B AUM, having overtaken BlackRock's BUIDL in early 2026 through structural rather than brand advantages.

2. Three mechanical advantages drove the flip: $100K minimum (vs. BUIDL's $5M), accumulating yield structure (better for collateral automation), and native USDC integration (atomic redemptions).

3. The Binance collateral integration was the catalyst. USYC was added as off-exchange collateral four months before BUIDL, capturing institutional derivatives margin flows first.

4. Circle's ownership of both USDC and USYC creates an unreplicable moat — no competitor has both a major stablecoin and a tokenized Treasury fund under one roof.

5. The Cayman feeder structure is a double-edged sword: it enables non-US distribution and broader accessibility but adds jurisdictional complexity compared to US-registered alternatives.

6. Risk profile is Low-Medium. Treasury/repo backing provides minimal credit and duration risk; the main risks are structural (Cayman wrapper), operational (Circle dependency), and competitive (BlackRock counterattack).

7. Growth outlook is positive but contested. USYC's collateral integration advantage could drive $4-5B AUM by mid-2027, but BUIDL's institutional distribution power means this rivalry is far from settled.

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Sources: Circle product page and acquisition announcements; RWA.xyz treasury data; Hashnote fund disclosures; CryptoSlate analysis; CoinFi; Crypto.news; SEC press releases. AUM, chain deployments, and product mechanics change as Circle integrates USYC further into the USDC stack. Verify current state on issuer sites before allocating.

© 2026 FundSmart Technologies. This is not investment advice. FundSmart RWA Intelligence is not licensed by the SFC or any regulatory authority to provide investment advice.