Bitcoin Volatility at 43%: Calmer than 19% of S&P 500 Stocks

Bitcoin, wiser than Oracle or Coinbase. Grayscale measures its volatility over a year at 43%, down from 81% five years ago. Nearly one in five S&P 500 stocks now fluctuates more than it. However, it is essential to understand what this percentage measures and what it conceals.

Key Points

• Over twelve months, BTC's fluctuations reached 43% on an annualized basis, compared to an average of 64% over ten years.
• About 95 companies in the leading Wall Street index are more volatile than the cryptocurrency.
• Grayscale attributes this calmness to liquidity, institutional investors, and regulated access.
• A year of data is insufficient to assess risk over a complete cycle.

Bitcoin Volatility Explained Without Equations

Take the Bitcoin price every evening for a year. Note the change each day, then measure how much these changes deviate from their average. You get a daily standard deviation. Multiply it by the square root of the number of trading days, and you have the annualized volatility that Grayscale displays.

Bitcoin trades 365 days a year, hence a factor close to 19. A volatility of 43% corresponds to a typical daily change of about 2.3%. Five years ago, at 81%, it was more like 4.2% per day. Grayscale does not specify its calculation convention. With the 252 sessions of a trading year, it would rise to 2.7%.

Keep the order of magnitude in mind. About two out of three days remain below this 2.3% change, provided that prices follow a bell curve. This is not the case for BTC, whose flash crashes are more frequent than theory predicts.

This figure also looks in the rearview mirror. We speak of realized volatility, calculated on past prices. The options market publishes an implied volatility, which traders anticipate. At Deribit, the DVOL index calculates it for the next 30 days.

Bitcoin Compared to S&P 500 Stocks

Grayscale ranked the 500 values of the American index according to their volatility over a year, with Bloomberg data as of October 6, 2026. The chart places JPMorgan around 20%, Amazon around 30%, and Bitcoin just above 40%. Further to the right, Oracle is around 55%, Coinbase around 70%, and Sandisk over 100%.

Ironically, the stock of the leading American crypto platform shakes its shareholders more than the asset it sells. In total, 19% of the members of the index, nearly 95 companies, have been more volatile than BTC.

Zach Pandl, Grayscale's research director, draws a clear conclusion in his note from October 14. According to him, Bitcoin's volatility remains higher than that of most stocks, but it "no longer belongs to a separate risk category." The question is no longer whether to hold a volatile asset, he adds, but how much to allocate to it in a portfolio.

Why Bitcoin Volatility is Decreasing

Grayscale offers three reasons in one sentence. The market is more liquid, institutional investors are more present, and regulated access has multiplied. Behind this formula are the spot Bitcoin ETFs launched in the United States in January 2024, which opened the door to wealth management advisors and some pension funds.

Glassnode proposes another avenue. In September, the on-chain analysis company estimated that the supply held by long-term holders explained about 19% of the variations in monthly volatility, the first of 13 factors tested. This makes sense, as Bitcoins that have been dormant in a wallet for years do not weigh on the order book.

The manager himself acknowledges the limitation of the exercise. "A year of data cannot establish Bitcoin's risk over all market cycles," writes Zach Pandl. Calm also has its downside. Lower volatility makes drops less severe, but it equally dulls the surges that have built BTC's reputation.

Deribit's DVOL index over a year, with a peak close to 90 in early February 2026 and below 40 since the end of summer. Source: TradingView

Options anticipate a calmer month than the past year. Deribit's DVOL rose from 33.6 on September 17 to 37.9 on October 20, but remains below the 43% measured by Grayscale. The argument that Bitcoin is no more agitated than a stock is not new; Binance has already defended it with supporting data.

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