The market prices an uncertain future
Buyers and sellers disagree about future use, regulation, competition and network risks. Bitcoin also pays no contractual interest or dividend that would give everyone a common discounted-cash-flow anchor. Valuation therefore depends strongly on expectations.
News need not change the protocol to change willingness to hold BTC. If the quantity offered for trade is small relative to orders, even a modest demand shift can move the marginal price substantially.
Trading is continuous and fragmented
Bitcoin markets run around the clock across venues in different jurisdictions. Liquidity is uneven and can be thinner in a particular pair overnight or at weekends. News can therefore reach price without an official market opening.
Arbitrage links prices, but capital movement and venue risk impose limits. A service outage or withdrawal restriction can push a local rate away from a broader index.
Leverage creates feedback
With leverage, a trader controls exposure larger than their own collateral. If price moves against the position, a platform can liquidate it automatically. Forced selling into a fall or buying into a rise can amplify a short-term move.
Thin order books, herd behaviour and disagreement over fair value add to volatility. Not every sharp move has one identifiable cause.
- volatility measures moves in both directions
- liquidity varies by venue and time
- liquidations can amplify a move
Could volatility fall over time?
Deeper markets, wider use and more diverse holders may reduce sensitivity to a single order. That is not a law. New regulatory regimes, leverage, concentrated custody or a shift in expectations can raise volatility again.
Historical volatility describes one period and currency; it does not cap future risk. Anyone needing an exact euro amount on a particular date bears exchange-rate risk regardless of their long-run view of Bitcoin.