Charles Schwab's latest research warns that even a 1% cryptocurrency allocation can dramatically alter portfolio risk profiles. The brokerage emphasizes that bitcoin and ether behave as high-volatility assets capable of dominating overall portfolio behavior.

Historical data shows both assets suffered drawdowns exceeding 70% in previous cycles, far surpassing typical stock or bond declines. Schwab's analysis indicates low single-digit crypto allocations can account for meaningful portions of total portfolio risk.
The firm identifies two approaches for crypto inclusion. Traditional portfolio theory considers expected returns and volatility, though Schwab notes return assumptions vary widely among investors. Risk budgeting focuses on how much total portfolio risk investors want crypto to contribute.

"There is no correct allocation to cryptocurrencies, and we believe the decision is largely a personal one," Schwab states. Factors include investment horizon, digital asset familiarity, and capacity for loss. The firm maintains crypto remains speculative, unsuitable for many investors.