Grayscale has introduced the Sui Staking ETF (GSUI), an exchange-traded product not registered under the Investment Company Act of 1940. This means GSUI is not subject to the same regulations as 40 Act registered ETFs and mutual funds, posing significant risk and volatility to investors. The fund's gross expense ratio is set at 0% for the first three months or until it reaches $1 billion in assets, after which a 0.35% fee will apply. The Sui blockchain, which GSUI invests in, operates on a delegated proof-of-stake model, relying on validators to secure the network. Staking SUI involves risks such as illiquidity, security breaches, and potential loss of staked assets. Investors are advised to review the prospectus carefully before investing, as the fund's staking rewards are not directly issued to them.