Volatility
The size of price swings — crypto's defining trait, the source of both its returns and its wreckage.
Volatility measures how violently price moves. Crypto’s is structural: Bitcoin routinely swings in a day what indices move in a quarter, and 70–85% cycle drawdowns have occurred every cycle — including the ~50% fall from the October 2025 peak into mid-2026. Causes: a young, 24/7, globally fragmented market, reflexive leverage, and narratives moving faster than fundamentals.
Volatility is symmetric fuel — it created the asset class’s legendary returns and its ruin stories; it’s also literally an input to the Fear & Greed Index. Taming it is position-size arithmetic, not forecasting: hold an amount whose worst historical drawdown you could watch without selling.