Bitcoin and Ethereum are experiencing significant negative returns in November 2025, diverging from their historical performance. As of November 21, Bitcoin's return for the month stands at -22.08%, a stark contrast to its historical average November return of +46.02% since 2013, according to Coinglass data. Similarly, Ethereum has recorded a -27.47% return this month, compared to its average November return of +7.88% since 2016. These figures highlight a challenging month for the leading cryptocurrencies.