According to reports, the U.S. Securities and Exchange Commission (SEC) has expressed concerns about the Ethereum and Solana staking ETFs launched by REX Shares and Osprey Funds. The SEC believes that these products may not meet the definition of investment companies and ETFs under the federal securities laws.

The SEC pointed out that these products may have issues with improper registration statements and misleading disclosures, and has sent a formal letter to ETF Opportunities Trust. REX has stated that it will not launch the product until the relevant legal issues are resolved.