Stablecoin yield infrastructure project Osero has successfully raised $13.5 million in a funding round led by Sky Ecosystem and co-led by Plasma. According to The Block reports, the round was completed on May 12, 2025, with the funding structured as a SAFT (Simple Agreement for Future Tokens). The round included angel investors representing USDT0, Maple, Accountable, Four Pillars, RedStone, The Rollup and Kairos Research. Plasma, which co-led the round, is building a stablecoin-focused blockchain and its token sale drew $373 million last year in an oversubscribed sale.
The funding addresses a significant market gap in the $300 billion+ stablecoin market. As reported by DeFiLlama data, most yield from the assets backing those stablecoins still goes to issuers like Circle and Tether, leaving holders with no direct return and fintech firms with limited ways to offer stablecoin savings products without managing assets themselves.
Osero is launching three products to address different market segments. Osero Earn allows wallets, neobanks, custodians and exchanges to embed the Sky Savings Rate into their own interfaces with integration requiring approximately 10 lines of code. The product routes deposits into the Sky Savings Rate while Osero handles the underlying asset-management, routing and risk infrastructure. Osero App provides users with direct access to the rate across chains, while Osero Foundry offers asset managers and structured product issuers a way to bring yield products on-chain with up to $2.5 billion in allocation capacity for anchor funding, swap liquidity and lending liquidity.
The $13.5 million raise will fund capital requirements for Osero's first Foundry allocations, with the capital used to underwrite the first cohort of deployments under the risk framework used for the Sky Protocol's assessment process. Sky, formerly MakerDAO, has been expanding the balance sheet and distribution network around USDS and sUSDS, receiving a B- rating from S&P last year, marking the first credit rating assigned by the agency to a DeFi protocol.
