Volatility
✓ Last verified 14 Sep 2026
The short version
Volatility measures how much an investment's value swings up and down over time - higher volatility means bigger, more frequent price swings, not necessarily a worse long-term outcome.
A stock or fund that swings 20% up and down within a year is more volatile than one that moves 5%, even if both end the year at the same final value. Volatility is often used as a proxy for risk, but it's worth distinguishing from permanent loss of capital: a volatile investment held through its swings over a long horizon can still deliver strong returns, while a low-volatility investment isn't automatically "safe" if it's exposed to other risks (inflation eroding real returns, for instance). Understanding your own tolerance for volatility - see our article on risk appetite - matters more than avoiding it entirely.
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