Historically, bitcoin has exhibited relatively low correlations with traditional asset classes over full four-year crypto cycles. While those relationships have evolved as cryptocurrencies have become more integrated into financial markets through futures, exchange-traded funds (ETFs) and ETPs, bitcoin has generally maintained diversification characteristics distinct from many traditional assets.
The question becomes more complicated when investors move beyond bitcoin. Ether and $SOL are generally less liquid and more volatile than bitcoin. Since the start of 2026, ether and $SOL have exhibited volatility approximately 35% and 44% higher than bitcoin, respectively. Diversification within crypto therefore often increases volatility. Whether that improves diversification depends on correlations. A volatile asset moving in the same direction as the rest of the portfolio may reduce diversification benefits, while one moving differently may enhance them.
Historically, $SOL has acted as a better diversifier than ether. Over the four years through April 2026, bitcoin’s correlation with ether was 0.78. By contrast, $SOL‘s correlation with bitcoin was 0.72. Thus, $SOL was slightly less likely to move in the same direction as bitcoin each week. More importantly, when $SOL did not move in the same direction as bitcoin, it was historically less likely than ether to move in the same direction as other parts of a traditional portfolio, such as equities. $SOL‘s correlation with the S&P 500 Index was slightly lower than both bitcoin’s and ether’s. If historical correlations are any guide, $SOL might act as a better diversifier than ether.
