[21Shares Files for Sei ETF and Plans to Explore Staking Functionality, SEC Still Reviewing Altcoin ETFs] According to a report by Jinse Finance, 21Shares has submitted an S-1 registration statement to the U.S. Securities and Exchange Commission (SEC) with plans to launch a Sei ETF. The prospectus indicates that the company hopes to explore the possibility of staking certain SEI tokens to earn rewards. Currently, the SEC has not approved ETF staking functionality. Previously, staking plans for Ethereum spot ETFs proposed by Grayscale, BlackRock, and 21Shares were also not approved. Recently, the SEC stated that some liquid staking activities do not involve securities, which could provide room for ETF staking. The Sei ETF will directly track the price of the native cryptocurrency SEI on the Sei network. Meanwhile, the SEC is also reviewing other altcoin ETF applications, including Litecoin, Solana, Dogecoin, XRP, and others.