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