According to documents filed by Morgan Stanley with the U.S. Securities and Exchange Commission on Tuesday, the firm is seeking regulatory approval to launch exchange-traded funds pegged to the prices of cryptocurrency tokens.The filing indicates that the bank is seeking to launch ETFs linked to the prices of the cryptocurrencies Bitcoin and Solana. This move would deepen the bank’s influence in the cryptocurrency sector, coming two years after the SEC approved the first spot Bitcoin ETF to be listed in the United States.