Stable launches USDT yield vault StableEarn for institutions

Stable, a USDT-focused Layer 1 blockchain, has launched StableEarn, a USDT yield vault tied to Treasuries and gold.

Summary

• Stable launched StableEarn with partners Morpho, Gauntlet, and Theo, offering USDT holders institutional-grade yield backed by Treasuries and real-world assets.
• The product targets USDT’s structural yield gap, as Tether keeps all reserve interest as profit rather than passing any return to token holders.
• Tether’s USDT supply stands at approximately $150 billion across 15 blockchains, the world’s largest stablecoin by circulation, but one that pays zero native yield to holders.

Stable, the USDT-dedicated Layer 1 blockchain, launched StableEarn, an institutional yield vault that lets USDT holders earn returns tied to US Treasuries and gold.

The product was developed in partnership with Morpho for lending infrastructure, Gauntlet for risk modeling, Theo for yield strategy, and Utila.io for enterprise-grade wallet security.

“USDT moves more value than any other stablecoin in the world, but putting it to work always had challenges when it came to competitive yields,” said Brian Mehler, CEO of Stable. “StableEarn changes that by bridging together institutional-grade yield and the chain built around USDT. The world’s largest stablecoin has a new home, and it’s on Stable.”

What StableEarn does and why USDT holders need a yield product

USDT pays no protocol-native yield to its holders. Tether keeps the interest spread between its zero-yield USDT deposits and the US Treasury bill reserves that back them, which is why Tether generated more than $10 billion in profit in 2025 alone.

That structural gap has driven demand for third-party products that bring USDT into productive use without requiring holders to bridge to other stablecoins.

StableEarn routes USDT holdings through real-world asset-backed strategies vetted by Gauntlet’s risk modeling. Returns come from traditional market instruments rather than from DeFi-native mechanisms, positioning it as a lower-risk yield option compared to delta-neutral synthetic stablecoin products.

Iggy Ioppe, CIO of Theo, described the product as “what on-chain dollar yield looks like done right. USDT-native, institutional-grade, with returns generated by real-world markets.”

Tether’s USDT supply stands at approximately $150 billion as of May 2026, having grown from roughly $118 billion at the start of 2025. Crypto.news has covered the ongoing intersection of stablecoin yield products and regulatory progress, as Congress debates yield-bearing stablecoin frameworks under the GENIUS Act.

Why the timing matters as institutional stablecoin yield demand scales

Yield-bearing stablecoins have grown from a niche experiment to a meaningful slice of the $311 billion total stablecoin market. Tokenised Treasury products including Ondo’s USDY and Sky’s sUSDS now serve as default treasury holdings for funds seeking passive dollar yield without managing T-bills directly.

StableEarn is the first vault designed specifically for USDT within its native chain, removing the need for USDT holders to bridge to Ethereum or other networks to access comparable products.

Morpho’s institutional lending architecture, which underpins StableEarn, is already deployed across multiple chains and is widely used by DeFi treasury managers as the risk-standard infrastructure for on-chain lending.

Crypto.news has reported on the US Treasury’s proposed AML rules for stablecoin issuers under the GENIUS Act, which would treat payment stablecoin operators as financial institutions and impose compliance obligations that institutional yield products like StableEarn must be designed to meet.

Crypto.news has also tracked the growth of tokenised Treasuries to $13.4 billion by April 2026, the asset class from which StableEarn draws its underlying returns.