Ethereum surged 70.8% in the third quarter of 2026, marking its strongest quarterly performance since the first quarter of 2021. The significant price appreciation highlights a major recovery for the second-largest cryptocurrency after several years of comparatively muted quarterly returns. CoinGlass data confirms the milestone, underscoring Ethereum's renewed momentum heading into the final quarter of the year. This rally represents the asset's most substantial three-month gain in over five years.