Volatility: why prices wobble
Volatility measures how widely an investment's value swings around its average — in both directions.
General investing education — not investment advice. These explainers describe concepts in plain language; they do not assess any fund, security, or person's situation. Investing involves risk, including possible loss of principal. For guidance on personal decisions, consult a SEBI-registered investment adviser.
Not investment advice.
What volatility measures
Volatility is a measure of how much an investment's value moves around over time. A fund whose NAV drifts a little each day has low volatility; a fund whose NAV jumps and dips sharply has high volatility. The most common yardstick is standard deviation — the typical distance of returns from their own average.
Volatility is not the same as loss
Volatility counts swings in both directions — sharp rises raise it just as sharp falls do. A volatile investment is not necessarily a losing one; it is one whose short-term value is harder to predict. The cost of volatility is uncertainty over short horizons: the shorter the period, the wider the range of outcomes an investor may experience.
An illustration
Consider two hypothetical funds that both averaged 8% per year over a decade. Fund A's yearly results stayed between +4% and +12%; Fund B's ranged from −20% to +35%. The destination was similar, but the journey was very different — and an investor who needed the money in a down year would have faced very different exit values. This is a hypothetical illustration with assumed figures (authored June 2026), not a projection of any actual investment. Real returns vary and may be negative.
Why it matters
Knowing a fund's volatility helps set expectations about the ride: how large the interim ups and downs have historically been, and how different a short holding period's outcome can be from the long-run average. Historical volatility describes the past; it does not predict future behaviour.