Charles Schwab CEO has raised concerns regarding the growing interest of young investors in cryptocurrencies. This comes as the firm released its third-quarter 2025 trader sentiment survey, which indicates a notable rebound in market optimism. The survey reveals that 43% of traders are bullish on cryptocurrencies for the next three months, with 38% optimistic about Bitcoin options ETFs and 32% on spot cryptocurrency ETFs, marking an increase from the second quarter of 2025.