REX Shares and Osprey Funds have submitted 21 separate cryptocurrency Exchange-Traded Fund (ETF) applications to the Securities and Exchange Commission (SEC), marking a significant development in US crypto asset management. These ETFs include assets with staking rewards, such as Cardano (ADA), Avalanche (AVAX), and DOT. The SEC filings could dramatically impact market dynamics by facilitating direct investments in cryptocurrencies, potentially increasing liquidity and attracting institutional investors. 21 single-asset cryptocurrency ETFs filed with the SEC represent a major milestone for US crypto asset management. This move signifies growing interest in integrating digital assets into traditional financial markets. Both REX Shares and Osprey Funds have prior experience in Bitcoin and Solana ETF development. The detailed application submitted to the SEC highlights the competitive landscape of the rapidly evolving ETF market.