The U.S. Securities and Exchange Commission (SEC) has requested potential Solana ETF issuers to update their S-1 filings, with these updates expected to drive the approval of Solana ETFs in the coming months. The SEC has shown particular interest in language regarding physical redemption and staking, indicating the possibility of including staking within Solana ETFs. Analysts expect that Solana ETFs could be approved within three to five weeks, potentially even before July this year. Several well-known institutions such as Fidelity, Franklin Templeton, VanEck, Bitwise, Canary Capital, 21Shares, and Grayscale are competing to issue Solana ETFs. Grayscale plans to convert its SOL Trust into a spot ETF. Previously, the SEC had delayed its decision on Grayscale's Solana ETF but has now officially acknowledged its application. The market is generally optimistic about the approval of Solana and XRP spot ETFs, partly because derivative-based ETFs already exist. CME launched Solana futures in February this year, which is seen as a positive signal for ETF approval. Multiple Solana futures ETFs have been subsequently launched.