The ETH/BTC ratio recently formed a "golden cross," where the 50-day moving average crosses above the 200-day moving average. Since early June, ETH has consistently outperformed BTC, with the ETH/BTC ratio rising about 25% from its low on June 6. Historical data shows that the performance after an ETH/BTC golden cross is inconsistent. After the golden cross on July 25, 2025, the ratio rose about 36% over the following four weeks but then declined; after the February 2021 golden cross, it once surged about 93%. However, the two golden crosses in May and August 2022 failed to sustain an upward trend. The golden cross is a lagging indicator based on historical prices and does not guarantee that ETH will continue to outperform BTC afterward $BTC $ETH