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Securitize, a leading tokenization platform, has joined forces with Mantle, a decentralized finance (DeFi) protocol, to introduce an institutional fund. This fund is designed to generate yield from a diversified portfolio of cryptocurrencies. The collaboration aims to provide investors with exposure to a mix of digital assets, including Bitcoin (BTC), Ether (ETH), and Solana (SOL), as well as stablecoins pegged to the US dollar.
The Mantle Index Four (MI4) Fund, as it is called, integrates liquid staking tokens such as Mantle’s mETH, Bybit’s bbSOL, and Ethena’s USDe. These tokens are included to boost returns through onchain yield, according to the announcement made on April 24.
The launch of this fund comes at a time when both retail and institutional investors are increasingly turning to cryptocurrencies, particularly Bitcoin, as a hedge against growing macroeconomic uncertainty. The fund is structured as a market capitalization-weighted index, with the goal of becoming a benchmark for the crypto market, similar to the S&P 500 for traditional stocks.
Timothy Chen, Mantle’s global head of strategy, highlighted the fund’s ambition to become the “de facto
or S&P 500 of crypto.” This initiative offers institutions a means to generate yield from digital assets. One of Mantle’s liquid staking products, Mantle Staked Ether (mETH), currently yields approximately 3.78% APR as of April 24, according to data from DefiLlama. The protocol has over $680 million in total value locked (TVL).Securitize is renowned for its role in tokenizing real-world assets (RWAs) for institutional investors, holding approximately 71% of the market share as of April 24. Its largest affiliated fund, the BlackRock Institutional Digital Liquidity Fund (BUILD), manages over $2.5 billion in net assets.
In March, Securitize co-founder and CEO Carlos Domingo noted that the demand for tokenized funds is surging. He attributed this to institutional investors, private equity firms, and credit managers seeking tokenization to enhance efficiency, reduce operational friction, and improve liquidity.

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