Wu learned that REX Shares has announced the upcoming launch of the first collateralized cryptocurrency ETF in the United States, the REX Osprey SOL+Staking ETF, which tracks Solana's performance and generates returns through on chain staking. Bloomberg analyst Eric Balchunas pointed out that REX has submitted an email to the SEC confirming whether all approval opinions have been resolved, and the SEC has stated that there are "no further opinions at this time".