Mantle, Securitize Unveil $400M MI4 Tokenized Crypto Index Fund

Mantle announced the launch of its Mantle Index Four (MI4) Fund in a press release published on April 24.

According to the announcement, the fund is structured as a BVI Limited Partnership and managed by Mantle Guard Limited, positioned as a bridge between institutional investment structures and decentralized finance.

We’re pleased to announce the launch of the Mantle Index Four (MI4) Fund—a new institutional-grade crypto product developed in partnership with @Mantle_Official and backed by a $400M anchor investment from Mantle Treasury.

MI4 is designed to become the de facto SPX or S&P 500 of… pic.twitter.com/rNLuIaaPhH

— Securitize (@Securitize) April 24, 2025

Mantle Taps Tokenization to Package Crypto Exposure

MI4 offers exposure to a basket of digital assets—BTC, ETH, SOL, and USD-pegged tokens—integrated with on-chain yield strategies. It is designed for investors seeking passive income without direct custody or asset management responsibilities.

Mantle Treasury has committed up to $400 million as anchor capital, with Securitize tapped to tokenize investor interests on Mantle Network.

Assets will be held using institutional infrastructure including Fireblocks and multisig controls.

The fund rebalances quarterly and incorporates staking mechanisms like Mantle’s mETH and Bybit’s bbSOL to generate yield within a compliant framework.

Tokenized shares can be transferred between approved participants and may be used as collateral under specific conditions.

“Our basket of the major crypto currencies aims to capture all capital on chain looking for smart beta with income and is a set-it-and-forget-it solution for institutions without the complexities of direct custody,” said Mantle’s Global Head of Strategy Timothy Chen.

S&P 500 Logic to Crypto

Carlos Domingo, CEO of Securitize, added that the fund “mirrors the best of traditional finance while delivering the full potential of tokenized securities.”

MI4 is positioned as an index-like crypto product with embedded yield and transferability, designed for institutional use cases.

Rollout begins in Q2 2025, with further integrations planned across the broader asset management ecosystem.

Institutional funds are increasingly designing crypto products to resemble the structure and mechanics of traditional index funds.

Rather than reinvent financial tools, firms are adapting existing models—employing passive strategies, periodic rebalancing, and regulated wrappers—to bring digital assets into portfolios already built around the S&P 500 and similar benchmarks.

What was once framed as an alternative system now moves through familiar channels. As tokenization spreads across fund structures and custody models, the gap between traditional finance and blockchain is closing—not through disruption, but through replication.