Osero Raises $13.5M for Stablecoin Yield Infrastructure

Osero, a stablecoin yield infrastructure project jointly incubated by Stablewatch and Soter Labs, announced on May 12, 2026, that it has raised $13.5 million in a funding round led by Sky Ecosystem and co-led by Plasma. Angel investors from USDT0, Maple, Accountable, Four Pillars, RedStone, The Rollup, and Kairos Research also participated in the round.

The raise comes as the total stablecoin market has surpassed $300 billion, according to DeFiLlama data. Despite this scale, the majority of yield generated by assets backing those stablecoins continues to flow to issuers such as Circle and Tether. End holders receive no direct return, and fintech firms face significant barriers when attempting to offer stablecoin savings products without managing the underlying assets themselves. Osero is positioning itself as the infrastructure layer that bridges this gap.

The company is launching three distinct products. Osero Earn enables wallets, neobanks, custodians, and exchanges to embed the Sky Savings Rate directly into their own user interfaces using approximately 10 lines of code. Osero handles the underlying asset management, routing, and risk infrastructure, while partner platforms retain control of their user experience. Osero App provides retail users with direct access to the Sky Savings Rate across multiple blockchain networks. Osero Foundry targets asset managers and structured product issuers, offering a pathway to bring yield products on-chain with up to $2.5 billion in allocation capacity covering anchor funding, swap liquidity, and lending liquidity.

Each Foundry deployment will undergo a Basel III-inspired risk review, reflecting the project's intent to apply institutional-grade risk standards to DeFi-native infrastructure. The $13.5 million raised will directly fund capital requirements for Osero's first Foundry allocations, underwriting the initial cohort of deployments under the risk framework aligned with the Sky Protocol's assessment process.

Sky, formerly known as MakerDAO, has been actively expanding its balance sheet and distribution network around its USDS and sUSDS stablecoins. The protocol received a B- credit rating from S&P Global last year, marking the first time the ratings agency assigned a credit rating to a DeFi protocol. Sky-backed projects have also been pushing into yield-bearing real-world asset products. In March 2026, Obex announced it was allocating $1 billion across credit, energy, and AI assets to expand stablecoin yield opportunities.

Why this matters: The stablecoin yield infrastructure gap represents one of the most persistent structural inefficiencies in crypto finance. As stablecoin adoption accelerates among fintechs and traditional financial institutions, the inability to pass yield directly to holders or embed savings products without heavy asset management burdens has limited broader utility. Osero's modular approach — particularly the low-integration-friction of Osero Earn — could meaningfully lower the barrier for regulated fintechs to offer competitive savings yields backed by on-chain infrastructure.

Based on my analysis, the Sky Ecosystem's decision to lead this round is strategically coherent. Sky has been methodically building a distribution moat around USDS by backing infrastructure projects that drive deposit inflows. Osero Earn, if adopted at scale by neobanks and custodians, could become a significant demand driver for sUSDS. The Basel III-inspired risk framework for Foundry is a notable signal that the project is designing for institutional scrutiny, not just DeFi-native users. Investors and fintech operators evaluating on-chain yield products should monitor Osero's Foundry allocation pipeline and partner integrations closely over the next 12 months.

For fintech operators and digital asset platform builders, the Osero Earn integration model warrants evaluation as a low-overhead path to offering stablecoin savings products. For DeFi investors, tracking Sky Ecosystem-backed projects continues to be relevant given the protocol's expanding institutional footprint.

Not financial advice.