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Ondo's USDY is Live on Sei: Tokenized Treasuries Meet High-Performance Infrastructure

Ondo's USDY is Live on Sei: Tokenized Treasuries Meet High-Performance Infrastructure

United States Dollar Yield (USDY), Ondo Finance’s flagship yieldcoin backed by tokenized short-term U.S. Treasuries, is now live on the Sei Network.

As the first permissionless tokenized U.S. Treasury Bill primitive to debut on Sei, USDY offers the network’s ecosystem of retail users and institutions direct, permissionless access to a secure, institutional-grade asset backed by short-term U.S. Treasuries and bank deposits.

The Foundation for Institutional-Grade Assets

Sei is becoming the global settlement layer for modern finance—high-performance, low-cost infrastructure built for the rigorous demands of institutions, enterprises, and consumer finance alike. By deploying on Sei’s Parallelized EVM, Ondo leverages infrastructure delivering 400ms time-to-finality and 12,500 TPS—providing the deterministic speed required by global markets.

With a circulating supply over $1.2B, USDY demonstrates broad institutional demand and brings one of the largest pools of capital in the RWA sector to Sei.

Tokenized treasuries have grown into a $10B market by solving a real problem: idle cash. With corporate cash balances exceeding $8T globally, the opportunity is immense—and USDY arrives on infrastructure designed for what comes next.

This integration further cements Sei as a preferred ecosystem for RWAs, aligning Ondo with a growing list of world-class asset managers and infrastructure partners who recognize the value in bringing composable assets to a high velocity ecosystem like Sei. 

The Sei Network supports a rapidly growing institutional asset ecosystem, including tokenized funds from BlackRock, Brevan Howard, Hamilton Lane, Laser Digital by Nomura, and Apollo now live on the network. This activity is supported by major infrastructure partners like Circle, Binance, Securitize, KAIO, Etherscan, and now Ondo Finance.

Unlocking Yield Utility Across the Sei Ecosystem

USDY transforms how capital functions by enabling users to turn idle cash balances into composable real world assets.

The USDY integration by Ondo enables a seamless utilization of tokenized treasuries across the ecosystem — serving as high-quality collateral for DeFi lending, a stable foundation for institutional cash management, and a composable medium for global payments. By consolidating these functions into a single, institutional-grade asset, USDY simplifies liquidity management and expands the possibilities for decentralized finance on Sei.

Key unlocks for users:

  • Treasury-backed dollar exposure: Non-U.S. users can hold USDY, a dollar-denominated asset with yield derived from short-term U.S. Treasuries.
  • Global accessibility: Non-U.S. individuals and institutions can access tokenized Treasuries directly on Sei without intermediaries.
  • Fast execution: Sei's performance rails support capital-efficient operations without sacrificing transaction speed or reliability.

Key unlocks for developers:

  • Full ERC-20 composability: USDY integrates seamlessly with Sei's EVM environment, enabling advanced yield strategies, treasury management, and capital markets products.
  • Secure and productive collateral: With institutional-grade backing, USDY serves as reliable collateral in lending, trading, and liquidity-provision contexts.
  • Seamless integration: Sei builders can quickly integrate USDY as productive collateral, treasury assets, or yield primitives into protocols across DeFi.

Live Integrations: USDY Utility on Day One

Ondo Finance has integrated USDY on Sei with immediate access across Sei's DeFi ecosystem:

Swaps: Users can swap USDY on Saphyre (FKA DragonSwap), a Sei-native DEX.

Lend & Borrow Markets: Users can utilize USDY as collateral on Takara Lend and Yei Finance.

Bridging: Users can access USDY on Sei via LayerZero's omnichain infrastructure—bringing Treasury-backed assets from other ecosystems into Sei's high-performance execution environment.

These integrations enable USDY to function as an active, composable asset—real world assets ready to be deployed across trading, lending, and cross-chain environments from launch.

The Convergence of Global Finance on Sei

Ondo's launch of USDY on Sei marks another step in the convergence of traditional capital markets and the onchain economy. As tokenized treasuries scale globally, Sei provides the infrastructure to support them.

Markets Move Faster on Sei.

Disclaimer: This content is provided for informational and educational purposes only and does not constitute financial, investment, legal, tax, or any other form of professional advice. Sei Labs, the Sei Development Foundation, and affiliated contributors do not offer or purport to offer investment advice, nor are they registered financial advisors, broker-dealers, or financial institutions. Any references to tokens, protocols, or blockchain technologies, including the phrase "Markets Move Faster on Sei," are purely illustrative and should not be interpreted as a solicitation, offer, or recommendation to buy, sell, or hold any asset or to engage in any investment strategy. Investing in digital assets and blockchain-based technologies involves substantial risk, including the potential loss of capital, market volatility, and regulatory uncertainty. Past performance is not indicative of future results. The Sei protocol and associated technologies are experimental, and any participation in the ecosystem should be approached with caution. All users and readers are strongly encouraged to conduct their own independent due diligence, seek advice from qualified financial and legal professionals, and fully understand the risks involved before making any decisions. No warranties or representations are made as to the accuracy, completeness, or reliability of any content presented. Use of or reliance on any information made available through this content is strictly at your own risk. This product is not available to U.S. persons.