Guide: Bitcoin’s Four-Year Cycles For over a decade, Bitcoin has followed a four-year rhythm around halving events - accumulation, expansion, euphoria, and collapse. But how do BTC cycles adapt to the arrival of ETFs, institutions, and macro liquidity? Our research team breaks down past cycles, the halving, psychology, liquidity, and what might be different about the 2026 cycle. Read the full guide below:(Arkham)