Solana (SOL) is witnessing robust staking activity and heightened social mentions, despite regulatory uncertainties surrounding staking-based ETFs. REX Shares and Osprey Funds have filed with the SEC to launch staking ETFs for Ethereum and Solana, but the SEC has expressed concerns over the products' structure and transparency. In a notable development, a whale transaction involved staking 4 million SOL into a validator, signaling strong confidence in Solana's network capabilities. The increase in social mentions further underscores positive sentiment towards Solana, highlighting its resilient on-chain fundamentals amid ongoing regulatory challenges.