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Bitcoin remains dramatically more volatile than the euro-dollar exchange rate, but its lead over Nvidia has narrowed to almost nothing on the latest comparable snapshot. CoinDesk’s 90-day annualized realized-volatility figures, calculated through October 22, 2026, put Bitcoin at about 38%, EUR/USD at 4.6% and Nvidia at about 37%. That makes Bitcoin roughly eight times as volatile as EUR/USD and only marginally more volatile than Nvidia. These are measurements of past price movement, not forecasts of where prices will go next.
How volatile are Bitcoin, EUR/USD and Nvidia right now?
On the same 90-day lookback and annualized realized-volatility basis, Bitcoin and Nvidia were close together while EUR/USD was far calmer.
| Asset | 90-day annualized realized volatility | What the comparison shows |
|---|---|---|
| Bitcoin | Approximately 38% | Reference point |
| EUR/USD | Approximately 4.6% | Bitcoin was about eight times as volatile |
| Nvidia | Approximately 37% | Bitcoin was only slightly more volatile |
CoinDesk’s analysis used data through October 22, 2026. A 38% annualized realized-volatility reading does not mean Bitcoin will rise or fall 38% in the next year. It describes the dispersion of its recent daily returns after annualization; the direction of those returns is a separate question.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWhat does “90-day realized volatility” actually measure?
Realized volatility looks backward. Analysts generally calculate each day’s logarithmic return, find the standard deviation over the selected window, and annualize it:
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annualized volatility = standard deviation of daily log returns × √N
N is the annualization factor chosen for the data frequency and convention. For a meaningful comparison, Bitcoin, EUR/USD and Nvidia must use the same 90-day window, return interval, annualization approach and as-of date. Changing any of those inputs can change the ranking.
The market-hours issue is especially important. Bitcoin trades continuously, including weekends, whereas Nvidia trades during equity-market hours and EUR/USD measurements depend on the selected foreign-exchange fixing or trading-session convention. A calculation that includes Bitcoin’s weekend moves but excludes equivalent non-trading periods for the other assets is not perfectly like-for-like, even when the displayed horizon says “90 days.”
Why is Bitcoin much more volatile than EUR/USD?
The gap reflects structural differences between a young digital asset and the world’s most heavily traded currency pair.
Continuous trading and no circuit breakers
Bitcoin markets operate 24 hours a day, seven days a week. There is no universal closing auction or exchange-wide circuit breaker to pause a global market after a sharp move, so information can be incorporated immediately at any hour.
Smaller, more speculative market structure
Bitcoin has a smaller market capitalization than established stores of value and a larger share of speculative positioning. Leverage in futures and perpetual markets can force liquidations, turning an initial move into a rapid cascade. EUR/USD, by contrast, is used extensively for international trade, central-bank reserves and corporate hedging, creating deep two-way liquidity.
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Greater sensitivity to discrete news
Regulatory decisions, exchange failures, fund-flow changes, monetary-policy surprises and shifts in risk appetite can all reprice Bitcoin quickly. Blockstream summarizes the drivers this way: “Bitcoin is volatile because it is a young, globally traded asset with a small market capitalization relative to traditional stores of value, 24/7 trading with no circuit breakers, significant speculative activity, and high sensitivity to macroeconomic and regulatory news.”
EUR/USD is also sensitive to interest rates, inflation and political events, but its enormous liquidity and the stabilizing role of major central banks generally dampen the size of individual moves.
Has Bitcoin’s volatility fallen to stock-market levels?
On some horizons, yes—especially when the comparison is with a high-growth technology stock such as Nvidia. On a one-year rolling annualized measure using Bloomberg data through December 5, 2025, Bitwise reported that Bitcoin was less volatile than Nvidia during every part of 2025. The latest 90-day snapshot reverses that ordering only slightly: Bitcoin is about 38% versus Nvidia’s 37%.
Bitcoin has also become less volatile than it was during its earlier boom-and-bust cycles, although “calmer” does not mean low-volatility. CoinDesk reported that Bitcoin’s 90-day volatility averaged about 58% from 2020 onward, reached 134% in June 2020 and fell to 27.5% in September 2025. The October 2026 reading is therefore below the post-2020 average but above the September 2025 low.
Those statements are not contradictory. A one-year rolling series smooths shocks over a longer period; a 90-day series reacts faster to the latest rally, sell-off or options-expiry episode. The asset that ranks first can change when the lookback changes.
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How can you make a fair BTC-versus-Nvidia-versus-EUR/USD comparison?
Use a checklist before interpreting any volatility chart:
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- Match the horizon: compare 90 days with 90 days, or one year with one year.
- Match the return interval: daily returns should be calculated consistently across all three series.
- Match annualization: disclose the factor and keep it identical across assets.
- Record the as-of date: realized volatility changes whenever a new price enters the rolling window.
- Describe trading conventions: state how Bitcoin’s 24/7 prices, equity sessions and FX fixes were sampled.
Without those details, a precise-looking percentage can create a false sense of comparability.
How is realized volatility different from Bitcoin’s options-implied volatility?
Realized volatility reports what prices did. Implied volatility is the level of future movement that options prices embed, after accounting for the option-pricing model and other inputs.
| Measure | Lookback or horizon | What it answers |
|---|---|---|
| 90-day realized volatility | Past 90 days | How variable the asset’s observed returns were |
| CME BVX | Forward-looking 30 days | What Bitcoin options imply for expected volatility, with a real-time value during CME trading days |
| CME BVXS | Forward-looking 30 days | The daily settlement version of the same options-implied benchmark |
CME defines BVX and BVXS from CME Bitcoin and Micro Bitcoin options. They are useful for monitoring market expectations, but they should not be placed beside a 90-day realized number as if both were measuring the same period or concept.
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What do these volatility rankings mean for someone monitoring the market?
First, Bitcoin’s current 38% reading still signals substantially larger day-to-day uncertainty than EUR/USD. A portfolio or trading plan built around currency-pair-sized moves can therefore underestimate Bitcoin’s potential range.
Second, the near tie with Nvidia shows why broad claims such as “Bitcoin is always more volatile than stocks” are unreliable. The answer depends on which stock, which window and which calculation is used. Nvidia’s own volatility can jump around earnings, semiconductor-cycle news or broad technology sell-offs, while Bitcoin can react at any hour to crypto-specific or regulatory events.
Finally, volatility is not a directional forecast or a complete risk measure. Correlation, liquidity during stress, leverage, drawdown size and the possibility of trading interruptions also matter. Use a matched realized-volatility series to describe recent behavior, and a clearly labeled options-implied series when the question is about forward expectations.
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Could Bitcoin become less volatile than both comparison assets?
It could on a particular window. A quiet 90-day period would lower Bitcoin’s realized figure as large moves roll out of the calculation, while a concentrated Nvidia sell-off could raise the stock’s figure. EUR/USD can also become more volatile around an unexpected central-bank decision or geopolitical shock. Any new ranking should therefore be dated and accompanied by its horizon and methodology.
Frequently Asked Questions
Does a 38% volatility reading mean Bitcoin is expected to return 38%?
No. Volatility measures the size of historical fluctuations, not whether returns were positive or negative and not the expected investment return. A market can have high volatility while ending a period nearly unchanged.
Why can two websites show different Bitcoin volatility percentages for the same month?
They may use different price feeds, sampling times, annualization factors or treatment of missing and weekend observations. Check the window, return interval, data source and as-of timestamp before deciding that one figure is wrong.
Is EUR/USD always the least-volatile major asset?
No. The 4.6% value applies to this specific 90-day window and calculation. Currency volatility can rise sharply during rate surprises, elections, financial stress or other market-moving events.
Where can I see a forward-looking Bitcoin volatility gauge?
CME’s BVX and BVXS are options-implied benchmarks for the next 30 days. BVX updates in real time during CME trading days, while BVXS provides a daily settlement value; both differ fundamentally from backward-looking realized volatility.
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