USDY is a yield-bearing token issued by Ondo Finance, backed by short-duration U.S. Treasuries and bank demand deposits. Each USDY represents a senior unsecured claim on a portfolio held by Ondo USDY LLC, a Delaware bankruptcy-remote vehicle. The token accrues interest through a rising redemption value: holders see USDY trading at a premium to $1.00 that grows over time, with the premium reflecting accumulated yield. As of April 25, 2026, USDY pays 4.65% APY, with $740 million in supply across Ethereum, Solana, Mantle, Sui, and Aptos (Ondo USDY composition).
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This article explains the structure, the yield mechanics, the regulatory restrictions (USDY is non-U.S.-only), and how it compares to other tokenized-Treasury offerings like USDM, BUIDL, and OpenEden TBILL. USDY is the most chain-distributed of the major tokenized-Treasury wrappers, which makes it the de facto standard for cross-chain treasury allocations to short-duration government debt.
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USDY is a tokenized note. The token represents a debt claim on Ondo USDY LLC, secured by a portfolio of U.S. Treasury securities (with maturities under 6 months) and bank demand deposits at insured U.S. banks. The portfolio is held in segregated custody and reviewed monthly by an independent auditor. As of April 2026 the composition is approximately 92% Treasuries and 8% bank deposits, with the deposit portion functioning as redemption-day liquidity (Ondo transparency reports).
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USDY launched in August 2023 as an Ethereum-native token. It expanded to Solana in early 2024, Mantle and Sui in mid-2024, and Aptos in late 2024. Cross-chain availability is bridged through native deployments coordinated with Ondo's issuance system. Total supply has grown from ~$60 million at launch to over $740 million in early 2026, with Solana now hosting roughly 35% of the float.
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USDY's distinctive feature is its accrual mechanism. The token does not target $1.00. It launched at $1.00 and the redemption value rises with accrued interest. As of April 23, 2026, 1 USDY trades at approximately $1.117. There is also a rebasing variant, rUSDY, that pays interest as a balance increase rather than a price increase. Holders choose the form that fits their accounting.
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The mechanism is straightforward. The complexity lies in the legal structure and the redemption process.
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Ondo USDY LLC holds Treasuries through a regulated broker-dealer (Morgan Stanley) and bank deposits at multiple U.S. insured banks. The Treasuries are short duration to minimize interest-rate risk; the deposits provide T+1 redemption liquidity. BlackRock acts as investment manager.
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Each USDY is a transferable digital note representing a fractional senior claim on the LLC's assets. Holders receive interest pro-rata to their balance, calculated daily and reflected in the redemption value (or the rebased balance for rUSDY).
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The yield is the weighted-average return on the portfolio minus a 25 bps annual management fee. Treasuries currently yield ~4.3% (3-month) to ~4.5% (6-month). Bank deposits yield ~4.5%. The blend, less the fee, produces the headline 4.65% APY.
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Mint requires KYC. Eligible holders wire USD to Ondo's bank, and Ondo mints USDY at the current token price. Redemption is the reverse: holders submit USDY to the contract, and Ondo wires USD on T+1. Minimum mint and redemption: $100,000. Below that minimum, holders rely on secondary-market liquidity (Curve, Aerodrome, Solana DEXs) to enter and exit.
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Ondo coordinates supply across chains through a controlled mint-burn process. There is no single canonical chain; Ondo can shrink supply on one chain and expand on another to match demand. This contrasts with many tokenized-Treasury products that exist on a single chain. The cross-chain availability is why USDY appears in DeFi vaults on Solana, Sui, and Mantle that have no other Treasury exposure.
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Yield tracks the front-end Treasury curve minus the 25 bps fee. Recent rates:

The yield compresses smoothly with each Fed cut. A 25 bps cut translates to approximately 22 bps in USDY APY (the small difference is the time it takes the portfolio to roll into newly issued bills at the lower rate).
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Pendle markets list PT-USDY for fixed-yield exposure on Ethereum. The implied APY typically tracks spot within 10 bps, reflecting the low yield volatility relative to other yield-bearing stablecoins.
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Treasuries are held at Morgan Stanley; deposits at multiple insured banks. A custodian failure freezes redemption. Bank deposits are FDIC-insured up to $250,000 per bank — meaningful for retail but immaterial for the multi-million-dollar deposit positions Ondo holds. The Treasury holdings are bankruptcy-remote from Morgan Stanley's broker-dealer balance sheet.
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The portfolio is short duration. A 100 bps parallel shift in the curve produces less than 0.5% mark-to-market change. The risk is a step-function at Fed meetings: yields drop, USDY's go-forward APY drops with them. Past accruals are locked in.
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T+1 redemption assumes orderly demand. A Friday-evening redemption queue clears Monday. A holiday weekend can stretch to T+3. During an SVB-style stress event, the bank-deposit leg might be temporarily unavailable, deferring redemption until the Treasury portion can be sold and settled.
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Each chain deployment is a contract. Cross-chain coordination introduces a transient inconsistency window during supply moves. Ondo audits cover Spearbit and OpenZeppelin for the Ethereum and Solana deployments; newer chains (Sui, Aptos) have correspondingly less audit history.
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USDY is restricted to non-U.S. persons. The Ondo terms and the LLC's offering memorandum exclude U.S. holders from primary issuance. Secondary-market acquisition by U.S. persons is technically possible but legally murky. U.S. institutions seeking equivalent exposure typically use Ondo's separate U.S.-permitted product (OUSG, which is qualified-purchaser only).
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USDY's edge is chain availability. The token is the easiest tokenized-Treasury exposure for a Solana-native team, a Sui-native team, or a multi-chain treasury that wants Treasury yield without bridging T-bill exposure manually. USDM beats USDY on rate (~35 bps) and on U.S. accessibility but is Ethereum-Polygon-Base-only. BUIDL is institutional-only.
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Eligible holders complete KYC with Ondo, wire USD, and receive USDY. Redemption mirrors the process. The $100K minimum makes this path institutional-only in practice.
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Anyone with a wallet can buy USDY on Curve (Ethereum), Orca (Solana), Aerodrome (Base via bridge), or any DEX listing. Spreads are typically 5 to 15 bps. The acquired USDY accrues interest the same way regardless of how it was obtained.
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USDY is collateral on multiple DeFi platforms. Notable: Drift Protocol on Solana lists USDY collateral, Aave V3 on Ethereum has had governance proposals to onboard it, and Pendle splits USDY into PT and YT tokens for fixed-yield exposure.
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Treasury teams use USDY as a yield-bearing alternative to plain USDC for working-capital balances. The 4.65% on idle dollars compares to 0% on Circle's USDC. The trade-off is the non-U.S. restriction and the dependence on Ondo's custodian relationships.
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USDY's chain availability is its most distinctive feature among tokenized-Treasury products. The breakdown as of March 2026:

For a Solana-native team that wants Treasury exposure, USDY is the most accessible option without bridging from Ethereum-native products. BUIDL has expanded to Avalanche and Aptos but not Solana. USDM is on Ethereum-Polygon-Base. USYC is permissioned. USDY uniquely covers the multi-chain DeFi-native treasury use case.
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Secondary-market depth varies by chain:

A holder buying or selling USDY on any chain other than Ethereum or Solana should expect wider spreads and longer execution windows. Primary redemption is the cleaner exit at scale, subject to the $100K minimum and T+1 settlement.
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The token's composability is improving but is still limited compared to plain USDC. Notable integrations:

The composability ceiling is higher for USDY than for permissioned tokens like BUIDL or USYC, lower than for sUSDS or sUSDe. The token's regulated status (non-U.S.-only) limits some integrations.
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USDY's multi-chain presence means a treasury team can hold USDY on Solana, Ethereum, or Sui simultaneously. Settling payments still requires unwinding to USDC or USDT and routing to the destination. Eco Routes orchestrates the multi-leg path: a team holds USDY on Solana, submits an intent to settle 100,000 USDC on Base, and Routes selects solvers willing to source USDC on Base in exchange for USDY-denominated value on Solana. The team retains yield where it accrues most efficiently while still settling counterparty obligations on the chain those counterparties prefer. See digital dollars explained and stablecoin treasury APIs compared for related context.
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Ondo Finance issues several related yield products and understanding the family helps holders pick the right one. USDY is one entry in a structured set.

The product split reflects a regulatory bifurcation: U.S. holders use OUSG with QP credentials; non-U.S. holders use USDY across chains. The combined Ondo product family aims to make tokenized Treasury exposure available across regulatory regimes.
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USDY is a yield-bearing token. It does not target $1.00. The price rises with accrued interest. A rebasing variant (rUSDY) keeps a $1.00 price and increases the holder's balance instead. Both represent the same underlying claim. Read the digital dollars explainer for context on yield-bearing variants.
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Primary issuance is restricted to non-U.S. persons. Secondary-market acquisition by U.S. persons is technically possible but legally untested. U.S. institutions seeking equivalent exposure usually hold OUSG (Ondo's U.S.-permitted Treasury product) instead.
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OUSG is Ondo's U.S.-accessible tokenized Treasury product, structured as a pool that holds BUIDL and short-term Treasuries. It is qualified-purchaser only ($100K min net worth or $5M for entities). USDY is the non-U.S. version with broader chain support and a slightly higher net APY due to differences in fee structure.
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Direct T-bill ownership requires a brokerage account, settles T+1 through TreasuryDirect or a broker, and is U.S.-accessible. USDY tokenizes the exposure, settles 24/7 on multiple chains, integrates with DeFi, and accepts non-U.S. holders. The trade-off is the 25 bps management fee and the additional custodian and smart-contract risk.
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rUSDY is the rebasing variant of USDY. It maintains a $1.00 token price and increases the holder's balance daily to reflect interest. Useful for accounting systems that prefer balance changes over price changes. Convertible 1:1 with USDY through the Ondo app.
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USDY's underlying assets are short-duration U.S. Treasuries; USDe's are crypto + perp shorts. By traditional credit-risk measures, USDY is materially safer. The trade-off is yield: USDY pays ~4.7%, sUSDe pays ~9.4%. Different risk profiles for different roles in a portfolio. See related automation platforms for routing options.
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