Ethereum finished June 2026 at -22%. If you held only the best days, the return jumps to +26.7%, while missing them drops it to -38.1%. That tells you the month was driven by a handful of outsized sessions rather than smooth trend strength. The biggest upside day was 6/7/26 (+7.5%), and the roughest day was 6/5/26 (-10.7%) $ETH