Volatility

Key points

• Volatility is the measure of how intensely and how often an asset's price changes over time.
• Highly volatile assets swing widely over short periods, which amplifies both potential gains and losses.
• In crypto, the high volatility of many assets is precisely what drives the use of stablecoins for payments and settlement.

What is volatility?

Volatility describes how much an asset's price moves. A low-volatility asset has a relatively stable price; a high-volatility one rises and falls sharply over short intervals. It is a measure of risk in the sense of unpredictability: the higher the volatility, the harder it is to know what the asset will be worth soon.

How it works

Volatility is observed from the variation in prices over a period. Large swings up and down in a short time indicate high volatility; smooth movements indicate low volatility. It tends to increase during moments of uncertainty, when news and shifts in sentiment trigger rapid reactions, and in markets with low liquidity, where smaller orders move the price more.

In the crypto market, many assets are known for elevated volatility compared to traditional currencies and other markets. This stems from factors such as the sector's novelty, liquidity concentrated in a few assets, and the strong influence of expectations. As a result, the same asset can see large swings within a single day.

It is precisely this volatility that makes certain assets unsuitable for payments: nobody wants the value of a charge to change between sending and receiving. Stablecoins exist, in large part, to provide stability in this environment.

Why it matters

Understanding volatility helps you choose the right instrument for each purpose. For payments and settlement, stable assets such as stablecoins reduce the risk of the value changing mid-transaction. A freelancer who gets paid in crypto and wants predictability tends to prefer a stable asset throughout the process, converting to reais when they decide to.

Risks and limitations

Volatility measures fluctuation, not direction: a highly volatile asset can rise, fall, or move in both directions. Volatility measurements describe the past and do not guarantee future behavior. Furthermore, low volatility does not mean an absence of risk, since even stable assets can break their peg in extreme situations. For this reason, looking at volatility alongside liquidity and context gives a more useful reading of risk.