Bitcoin’s Role in Portfolios Boosts Returns but Fails Hedge Test

Bitcoin may not be a reliable hedge against stock market downturns, but a small allocation could still boost portfolio returns. A Fidelity backtest covering 2016-2025 found that adding just 1% Bitcoin to a traditional 60/40 portfolio increased annual returns from 9.44% to 11.25%, with only a slight rise in volatility from 10.26% to 10.65%. However, Bitcoin failed to provide meaningful protection during major equity stress episodes, often falling more sharply than stocks.

The cryptocurrency’s correlation with equities has been unstable, shifting between positive, near-zero, and negative territory. While it can offer insights into risk appetite due to its 24/7 market and higher volatility, Bitcoin’s role as a diversifier rather than a hedge remains conditional. Its independent moves, driven by factors like ETF flows and regulation, can create rebalancing opportunities but do not guarantee downside protection.

Bitcoin’s 260-day correlation with the S&P 500 has fallen to its lowest level since 2015, suggesting it is increasingly trading on its own drivers. This raises the question of what Bitcoin can add to a stock portfolio beyond hedging. While it may not insulate against market downturns, its potential for higher returns and rebalancing benefits could still enhance portfolio performance.

The distinction between diversification and hedging is crucial. Bitcoin’s value lies in its ability to provide information, return potential, and rebalancing opportunities rather than acting as a hedge. Its role may evolve as institutional ownership grows and its relationship with traditional markets changes. For now, it remains a separate source of risk, return, and information rather than portfolio insurance.