Recently, several mainstream investment institutions have actively applied for altcoin spot ETFs. Investment giant Fidelity has submitted an application for a Solana spot ETF. Bitwise and Canary have updated the S-1 filings for their Solana spot ETFs, adding staking functionality. Invesco Galaxy's Solana spot ETF application is registered in Delaware; although not yet approved, it is regarded as a positive signal. The U.S. Securities and Exchange Commission (SEC) has approved Bitcoin and Ethereum spot ETFs but has not yet approved spot ETFs for altcoins other than Ethereum. The Ethereum spot ETF approval did not include staking functionality. With the SEC's increasingly friendly attitude towards cryptocurrencies, it is expected that more altcoin spot ETFs will be approved in the future, and staking features may be permitted. This content does not constitute investment advice.