What is volatility?
Volatility is a measure of how much a price swings. A stock that moves 0.5% a day has low volatility; one that swings 5% a day has high volatility. It measures the swings in both directions — a stock can be volatile and rising. Volatility is therefore not the same as the risk of losing money, but high volatility means you must be able to sit through big swings along the way.
Same direction, different swings. The turbulent one needs stronger nerves along the way.
Two stocks, same return
Stock A and stock B have both risen 10% in a year.
- A went smoothly: never more than 2% up or down in a week. Low volatility.
- B fell 30% in March, rose 60% over the summer and fell 10% in December. High volatility.
Same result — but B required you to sit still with a 30% loss without selling. Few people can. That is why volatility matters, even when the end result is the same.
What is typically volatile
- Low: Broad index funds, large stable companies (utilities, consumer staples), bonds.
- Medium: Most individual stocks in large companies.
- High: Small companies, biotech, technology without profits, cryptocurrency, leveraged products.
Rule of thumb: the more uncertain a company's future, the more the price swings — because each piece of news moves what people believe by more.
Volatility and time
Volatility is a problem if you need the money soon. If you need it in 20 years, the swings along the way matter less — it is the end point that counts. That is why time horizon and volatility must always be seen together: a short horizon requires low volatility; a long one can tolerate high.
The typical beginner's mistake
Buying a volatile stock because it "can rise a lot" — and selling in panic the first time it falls 20%. The swings are not a flaw in the stock. They are part of the deal. If you cannot bear them, the stock is wrong for you.
How you see it in Kiggo
Kiggo's short-term ring takes into account how much the stock swings, and Kiggo says it in plain words: "swings a lot" or "a calm stock". So you know what you are getting into before you buy.
Related terms
Frequently asked questions
Is high volatility bad?
Not in itself. It means bigger swings in both directions. It is bad if you need the money soon, or if the swings make you sell at the wrong time.
How is volatility measured?
Usually as the standard deviation of returns — a statistical measure of how far the daily moves typically are from normal. A figure of 15% a year is normal for a broad index; 40% is a lot.
What is the VIX?
An index measuring the expected volatility of the US stock market over the next 30 days. It is called the "fear index" because it rises when the market is nervous.
Kiggo explains — Kiggo does not advise. We never tell you what to buy or sell, and key figures can only be compared between companies in the same industry. The decision is yours. Last updated 2026-09-23.
Written by Claus Frisch, founder of Kiggo. Not an adviser, not a bank — Kiggo explains, you decide.
