Sky Ecosystem leads $13.5M round for stablecoin yield startup Osero!

Osero, a stablecoin yield infrastructure project incubated by Stablewatch, has closed a $13.5 million funding round led by the Sky Ecosystem — the protocol formerly known as MakerDAO. The raise is a direct bet on expanding the footprint of Sky's two native stablecoins, USDS (formerly DAI) and sUSDS.

Osero's core proposition is access to the Sky savings rate, effectively turning stablecoin holdings into yield-bearing positions without requiring users to navigate the full MakerDAO stack. The Sky Ecosystem leading the round signals a strategic alignment: this isn't passive venture capital, it's the issuer backing the infrastructure designed to deepen adoption of its own assets.

For the broader stablecoin market, the raise underlines a persistent theme — yield is the primary driver of stablecoin adoption beyond simple dollar pegs, and protocols willing to fund that infrastructure are…