واژهنامه
Volatility
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Volatility measures how sharply an asset's price fluctuates over time. Statistically, it's the standard deviation of returns — a higher number means larger swings in either direction. Volatility is not the same as risk of loss: it describes magnitude of movement, not direction.
Cryptocurrency is famously volatile compared to traditional assets. Indicative annualized 30-day volatility figures:
| Asset | Annualized 30-day vol |
|---|---|
| Bitcoin | ~45% |
| Ethereum | ~55% |
| S&P 500 | ~15–20% |
| Gold | ~15% |
| Major forex pairs | ~8% |
Why crypto is volatile
- 24/7 markets — no circuit breakers, no closing bell; price adjusts continuously to news
- Lower liquidity — the total crypto market cap is a fraction of equities; large orders move prices more
- Speculative flow — a significant share of trading is directional speculation rather than hedging or commercial use
- Immature derivatives market — leverage and forced liquidations cascade, amplifying moves
- Regulatory uncertainty — a single policy announcement can move prices 10% in minutes
- Concentrated holdings — whale wallets can shift supply-demand balance on short notice
Historical vs implied volatility
- Historical (realized) volatility — computed from past prices. BVOL and EVOL indices track Bitcoin and Ethereum realized vol over a window (typically 30 days).
- Implied volatility — derived from option prices, reflecting what the market expects volatility to be. DVOL (Deribit Bitcoin Volatility Index) is the BTC equivalent of the VIX.
When implied vol is much higher than realized vol, options are expensive and the market expects turbulence.
Volatility and mining
Volatility directly affects mining economics:
- Hashprice — the daily revenue per unit of hashrate — swings with coin price. A 20% drop in BTC cuts miner revenue by 20% overnight, independent of difficulty.
- Shutdown price — the coin price below which a given miner's electricity cost exceeds revenue. Sustained drops below shutdown price trigger miner capitulation — selling treasury, turning off rigs, or bankruptcy.
- Difficulty lag — difficulty adjusts every 2016 blocks (~2 weeks) in Bitcoin, so sharp price drops hurt margins before hashrate (and difficulty) can fall to compensate.
Pool payout methods handle volatility differently: PPS shifts price risk to the pool operator, while FPPS and PPLNS pass it through to miners.
Managing volatility
- Stablecoins (USDT, USDC, DAI) — park value in a dollar peg between trades
- Dollar-cost averaging (DCA) — spread purchases over time to avoid single-point timing risk
- Hedging — futures, options, or perpetual swaps to lock in prices
- Position sizing — smaller positions in more volatile assets
