Question 1

What is the correlation between Bitcoin and Ethereum?

Accepted Answer

Bitcoin and Ethereum correlation is measured using Pearson correlation coefficients on daily closing prices. A value of +1 means perfect co-movement, -1 means perfect inverse movement, and 0 means no linear relationship. This page shows rolling windows so you can see how the Bitcoin-Ethereum correlation has shifted over time. The current 30-day rolling correlation is +0.95 as of 2026-05-02.

Question 2

Which rolling windows are available for Bitcoin vs Ethereum?

Accepted Answer

Rolling correlation is available over 1-day, 7-day, 30-day, 90-day, and 1-year windows. Shorter windows highlight regime changes and news-driven decoupling between Bitcoin and Ethereum, while longer windows reveal the structural relationship between the two assets.

Question 3

How should I interpret a Bitcoin-Ethereum correlation value?

Accepted Answer

Readings close to +1 mean Bitcoin and Ethereum tend to rally and sell off together, offering little diversification. Readings near 0 indicate the two trade largely independently. Negative readings mean they move in opposite directions, which can improve portfolio diversification when held together.

Question 4

Does holding both Bitcoin and Ethereum provide diversification?

Accepted Answer

Diversification benefit is inversely proportional to correlation. When Bitcoin and Ethereum correlate near +1 they behave as a single position under stress; when correlation drops below +0.5 they provide meaningful risk reduction. Check the rolling chart above to see whether the Bitcoin-Ethereum pair currently offers diversification or moves together.

Question 5

How is the Bitcoin-Ethereum correlation calculated?

Accepted Answer

Correlation is computed as the Pearson correlation coefficient of daily log returns over the selected rolling window. Prices are pulled from the most liquid spot reference market for each asset, aligned on matching trading days, and updated hourly. Windows shorter than 15 overlapping observations are flagged as low-confidence.

Question 6

How often is the correlation value updated?

Accepted Answer

The underlying price series refresh hourly and the rolling correlation value is recomputed every 30 minutes. The "as of" date in the header reflects the latest trading day included in the calculation.

Question 7

Can correlation between Bitcoin and Ethereum regime-shift?

Accepted Answer

Yes — crypto correlations compress sharply during macro risk-off events (everything correlates to 1) and decompress in steady-state bull markets. Major unlocks, protocol events, and ETF flows can temporarily break historical correlation patterns between Bitcoin and Ethereum, which is why the 7D and 30D windows often disagree.

Bitcoin vs Ethereum Correlation+0.9530d rolling

Bitcoin vs Ethereum Correlation+0.9530d rolling