Crypto realized volatility: what it is and how to read it
Realized volatility in crypto measures how much a coin's price moved in a past period. Traders annualize the standard deviation to compare past swings.
Vahe HakobyanEditor-in-chief
Updated Oct 6, 20263 min readFact-checked
On this page
- Built from past prices, not future guesses.
- Standard deviation of returns, annualized.
- Implied volatility comes from options and looks ahead.
Realized volatility puts a number on how wild a coin's price has been. It comes from price history rather than opinions about the future, so it records what already happened.
What is realized volatility?
Realized volatility measures how much a cryptocurrency's price moved in a past period. It is a single number built from a stretch of price history, and a higher reading means returns were spread more widely around their average.
How is it calculated?
The calculation starts with a price history. Those prices become returns over short intervals, and standard deviation measures how far they spread from their average. The result is annualized so windows of different lengths can be compared.
- Pick a time window and a price source.
- Turn the prices into returns at a set interval.
- Measure how spread out those returns are.
- Multiply by an annualizing factor.
How do traders use it?
Traders use realized volatility to compare how turbulent different coins were over the same past window. It feeds risk models and portfolio reviews, and options traders check it against the volatility already reflected in crypto options prices.
- Compare two coins over the same past window.
- Review a portfolio's past swings.
- Check whether crypto options prices match past movement.
What limits its usefulness?
The reading depends on the choices behind it. A short window and a long window over the same period can disagree, and thin or manipulated exchange data can distort prices.
How is it different from implied volatility?
Realized volatility comes from past prices, so it looks backward. Implied volatility comes from crypto options prices, so it reflects what options traders expect ahead. The two measure different things and are not interchangeable.
Frequently asked questions
Usually, yes. Both describe past price movement, though providers can use different formulas and windows, so their numbers may not match.
No. It measures how much prices moved in the past and says nothing about direction. A high reading does not guarantee a turbulent future.
Virtual currency is more volatile than traditional fiat currencies, and most cash markets for it operate without oversight from any government agency. Trading runs around the clock, and thin markets can add to the swings.
