Tuttle has filed applications for a series of single-stock Crypto Blast ETFs, aiming to combine bearish option strategies with cryptocurrency investments. These ETFs plan to utilize bearish option spreads on selected stocks while investing the remaining margin cash into crypto ETFs that track Bitcoin (BTC), Ethereum (ETH), and Solana (SOL). This strategy is designed to amplify returns by leveraging both traditional stock market movements and the volatility of cryptocurrencies.