Bitcoin's 2025 decline signals end of four-year cycle theory

Bitcoin's failure to rally at the end of 2025, the year following its April 2024 halving, signals a potential breakdown of its traditional four-year cycle theory, Cointelegraph reports. The cryptocurrency concluded the year more than 30% below its all-time high of $126,080, set on Oct. 6, according to CoinGecko data. This performance breaks a historical pattern where BTC reached new highs in the year following the 2012, 2016, and 2020 halvings. Vivek Sen, founder of Bitgrow Lab, stated that the four-year cycle is now officially over due to Bitcoin's year-end decline.