Optimism Selects Ether.fi to Deploy Liquid Staking Treasury on OP Mainnet
Today, the Optimism Collective is pleased to announce the selection of Ether.fi (weETH) as our strategic Liquid Staking partner on OP Mainnet. This marks an important step in strengthening the Optimism Collective as the leading environment for low-risk, institutionally aligned DeFi and sets the foundation for the next wave of sustainable, on-chain economic activity.
This decision follows a comprehensive, comparative assessment of all proposals submitted to the Collective’s Liquid Staking RFP. Each protocol was evaluated across liquidity depth, net yield, ecosystem alignment, and risk profile and normalized into a risk-adjusted framework grounded in established treasury management standards. Ether.fi’s proposal demonstrated the most compelling overall combination for OP Mainnet at this time.
The selection reflects Optimism’s broader view of liquid staking: the future is multi-protocol. The Collective remains committed to supporting a diverse Liquid Staking Token (LST) ecosystem and expects to expand opportunities for many partners as the Optimism Collective scales.
Why Ether.fi
Ether.fi brings a strong blend of strategic alignment, performance, and ecosystem maturity, which positions weETH as a key asset in OP Mainnet’s next phase of growth. Their proposal emphasized broadening access to weETH, deepening liquidity, and integrating high-quality staking collateral across core DeFi primitives such as DEXs, lending protocols, and custodial platforms. Combined with competitive staking and restaking yields that support efficient borrowing and lending markets, weETH offers builders and users a versatile, capital-efficient foundation for participation in OP Mainnet’s financial ecosystem. Ether.fi’s transparent, audited architecture and compatibility with leading institutional partners further ensure that weETH meets the security and operational standards expected of critical infrastructure.
Strengthening OP Mainnet’s Ecosystem
The selection of Ether.fi represents a meaningful milestone in Optimism’s work to build the most secure, liquid, and institutionally trusted DeFi environment. With weETH serving as one of the core building blocks, OP Mainnet is positioned to unlock more resilient financial integrations and a stronger foundation for long-term ecosystem growth as a home for neutral blockspace.
This partnership is designed to be additive, not exclusive. The Collective remains committed to fostering a vibrant, multi-protocol LST landscape, ensuring developers, institutions, and users can benefit from a diverse array of high-quality collateral options.
This is only the beginning, and we look forward to continuing our work with builders, partners, and the broader community as we bring this next chapter of OP Mainnet to life.