According to The Block, real-world asset tokenization company Securitize has partnered with Mantle to launch a new institutional crypto index fund, with Mantle committing $400 million as a cornerstone investment in the fund. The Mantle Index Four (MI4) fund aims to invest in top crypto assets, including BTC, ETH, SOL, and USD stablecoins, with the goal of becoming the "S&P 500 of the cryptocurrency space." A press release states that its allocation reflects market capitalization and risk. The fund aims to further enhance returns through quarterly rebalancing and integrating staking strategies such as Mantle's mETH and bbSOL.