A frictionless way to earn ETH-native yield, accessible through a regulated, institutional-grade fund.
Navigating wallets, selecting assets, and managing yield strategies can be complex — especially for institutions deploying capital at scale.
The Mantle Index Fund (MI4) is designed to solve that challenge by offering diversified, yield-enhanced crypto exposure within a familiar, regulated structure.
Set to begin its Phase 1 rollout in Q2 2025, MI4 will feature yield-generating assets like mETH as part of its ETH allocation, bringing staking rewards into an institutional format.
MI4: A Diversified Crypto Index Fund
Developed in partnership with Securitize — the firm behind BlackRock’s BUIDL and Apollo’s ACRED — MI4 is a tokenized, yield-focused index fund tailored for institutions seeking regulated, scalable access to digital assets.
Backed by an anchor commitment of up to $400 million from Mantle Treasury, MI4 provides diversified exposure to BTC, ETH, SOL, and USD stablecoins, with targeted allocations to yield-bearing assets such as mETH, bbSOL, and sUSDe.
Structured like a traditional equity index, MI4 blends institutional familiarity with crypto-native yield strategies for enhanced performance.
Why mETH Matters in MI4
As a key part of MI4’s ETH allocation, mETH strengthens the fund’s yield potential while maintaining institutional simplicity:
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Staking yield, simplified mETH delivers native ETH staking rewards within the fund, no wallets or DeFi setup required.
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Institutional credibility Listed alongside BTC and ETH, mETH is a trusted, yield-generating component for institutional portfolios.
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Proven traction With rising TVL and deep integration across the Mantle Ecosystem, mETH demonstrates real-world utility and adoption.
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Tokenized flexibility Through Securitize, fund positions with mETH exposure can be tokenized — unlocking liquidity and potential collateral use on supported platforms.
Built for the Next Wave of ETH Adoption
The MI4 fund is managed by Mantle Guard, ensuring regulatory oversight, investor protection, and quarterly rebalancing based on market dynamics. With mETH integrated as a core ETH position, MI4 delivers crypto-native yield in a format institutions can trust.
Following the 2025 ETH ETF approvals and over $12B in institutional inflows, demand for structured, yield-bearing ETH exposure is rising. mETH is purposefully integrated to meet this demand, offering staking yield through regulated, accessible products.
Beyond MI4, the mETH Protocol continues to scale across institutional offerings. Current products include the Fixed Yield Vault (+2% APR on top of staking), Bybit Earn, and upcoming integrations via Mantle Banking — bridging on-chain yield with traditional financial infrastructure.
With growing adoption and ecosystem alignment, mETH Protocol is connecting institutional capital to DeFi innovation through a full-stack liquid staking and restaking platform built for capital efficiency, compliance, and the next phase of ETH adoption.