Ethereum has ended higher in six of its 10 October trading periods since 2016 and lower in four, according to Coinglass data cited by Odaily. October’s strongest performance came in 2021, when Ethereum gained 42.92%, while its steepest October decline was a 16.83% drop in 2016. Across the period, the average October return was 3.29% and the median was 0.36%. Ethereum’s September 2026 return reached 8.77%, making it the second-highest September return on record, behind the 14.53% gain recorded in September 2016.