Volatility
Volatility is the degree to which an investment's price or returns move up and down over time. Higher volatility means larger and more frequent swings, and it is commonly measured using standard deviation.
What Is Volatility?
Volatility describes how much and how quickly the value of an investment rises and falls. A stock or fund whose price swings sharply from week to week is called highly volatile. One whose value moves gently is said to have low volatility.
Volatility is one of the most widely used measures of investment risk. It does not tell you whether an investment will go up or down; it tells you how bumpy the ride is likely to be.
You will encounter volatility in news coverage of market falls, in fund factsheets (as standard deviation), in the riskometer assessment, and in your own experience when your portfolio value changes day to day.
How Does Volatility Work?
- Prices change constantly. Market prices respond to news, company results, interest rates, global events and investor sentiment.
- Returns are measured over periods. Daily, monthly or yearly returns are calculated from these price changes.
- Dispersion is measured. Standard deviation measures how far returns typically spread around their average. A higher standard deviation means returns are more spread out.
- The figure is annualised. Factsheets usually express standard deviation as an annual percentage for easy comparison.
Other related measures include:
- Beta: how much a fund moves relative to its benchmark. A beta of 1.2 suggests the fund has historically moved about 20% more than the market in either direction.
- Volatility indices: NSE publishes India VIX, an index that reflects the market's expectation of near-term volatility in the Nifty 50.
Practical Example
Illustrative example: Two funds, A and B, have the following yearly returns over five years (hypothetical):
| Year | Fund A | Fund B |
|---|---|---|
| 1 | 10% | 30% |
| 2 | 12% | −10% |
| 3 | 11% | 25% |
| 4 | 13% | −5% |
| 5 | 9% | 15% |
| Average | 11% | 11% |
Both have the same average yearly return. But:
Fund A: deviations from 11% are −1, 1, 0, 2, −2. Squared: 1, 1, 0, 4, 4. Sum = 10. Variance = 10 ÷ 5 = 2. Standard deviation = √2 ≈ 1.4%.
Fund B: deviations are 19, −21, 14, −16, 4. Squared: 361, 441, 196, 256, 16. Sum = 1,270. Variance = 1,270 ÷ 5 = 254. Standard deviation = √254 ≈ 15.9%.
Now see what happens to ₹1,00,000 in each:
- Fund A: ₹1,00,000 × 1.10 × 1.12 × 1.11 × 1.13 × 1.09 ≈ ₹1,68,437 (CAGR ≈ 11.0%)
- Fund B: ₹1,00,000 × 1.30 × 0.90 × 1.25 × 0.95 × 1.15 ≈ ₹1,59,778 (CAGR ≈ 9.8%)
Despite identical average returns, the more volatile fund ended with about ₹8,659 less. This effect, sometimes called volatility drag, happens because losses hurt more than equal-sized gains help: a 50% fall needs a 100% gain to recover.
(This example uses population standard deviation for simplicity.)
Why Is Volatility Important?
- Measures the bumpiness of returns: It helps set realistic expectations about how much your investment may swing.
- Affects behaviour: High volatility can trigger panic selling at the wrong time, which often hurts long-term returns more than volatility itself.
- Matters for timelines: For short-term goals, a sharp fall just before you need the money can be damaging. For long horizons, there is more time to recover.
- Informs asset allocation: Mixing assets with different volatility profiles can smooth portfolio returns.
Key Features
- Two-directional: volatility includes both upward and downward moves.
- Varies by asset class: equities are generally more volatile than debt funds; small-cap stocks are generally more volatile than large-cap stocks.
- Changes over time: markets go through calm and turbulent phases.
- Measured historically: standard deviation is based on past returns, while indices like India VIX reflect expected near-term volatility.
Benefits and Limitations
Volatility is a measure, not a product, so think of it in terms of usefulness and limits.
| Usefulness | Limitations |
|---|---|
| Simple, widely reported measure of risk | Treats upside and downside swings equally |
| Allows comparison of funds within a category | Past volatility may not predict future volatility |
| Helps match investments to time horizon | Does not capture rare events like defaults or liquidity freezes |
| SIP investors can benefit from buying more units when prices dip | Can cause anxiety and poor decisions if misunderstood |
Comparison With Related Concepts
| Concept | Meaning | Key difference | Practical implication |
|---|---|---|---|
| Market Risk | Risk of loss from broad market movements | Market risk is the cause; volatility is how it shows up in prices | Diversification within equity cannot remove market risk |
| Risk-Adjusted Return | Return per unit of risk | Uses volatility as the denominator | Compare return and volatility together |
| Permanent loss | Lasting loss of capital | Volatility can be temporary; permanent loss is not recovered | Avoid selling in panic during temporary declines |
| Liquidity Risk | Difficulty selling without affecting price | Low-liquidity assets can show sudden volatility | Check liquidity in small-cap and credit-heavy funds |
How Does Volatility Apply to Mutual Fund Investors?
- Factsheets: Equity and hybrid fund factsheets often report standard deviation and beta.
- SIPs and rupee cost averaging: With regular investing, volatility means you buy more units when NAV is low and fewer when it is high. See Rupee Cost Averaging.
- Fund category choice: Small-cap funds and sectoral funds typically show higher volatility than large-cap funds or conservative hybrid funds.
- Riskometer: Volatility is one of the factors considered in a scheme's risk classification (SEBI Investor Website: Understanding the Riskometer).
- Goal matching: Money needed within a year or two is usually better kept in lower-volatility options.
Common Mistakes and Misconceptions
- "Volatility means I am losing money." A temporary fall is not a realised loss unless you sell. Long-term investors can often ride out swings.
- "Low volatility means no risk." Some debt or credit instruments can show low volatility until a sudden default or downgrade.
- "I should stop my SIP when markets are volatile." Stopping during a fall means missing out on buying units at lower prices, which is the core advantage of SIPs.
- "Two funds with the same average return give the same result." As the example shows, the more volatile fund can end with less money.
Important Terms to Know
- Market Risk: risk from movements in the overall market.
- Risk-Adjusted Return: return relative to risk taken.
- Rupee Cost Averaging: buying more units at lower prices through regular investments.
- Riskometer: SEBI-mandated risk label for mutual fund schemes.
- Diversification: spreading investments to reduce risk.
- Risk Appetite: how much fluctuation you can accept.
- Investment Horizon: how long you plan to stay invested.
Key Takeaways
- Volatility measures how much an investment's value fluctuates over time.
- Standard deviation is the most common measure; beta shows sensitivity to the market.
- Higher volatility can reduce compounded returns even when average returns are similar.
- Volatility is not the same as permanent loss; panic selling often causes the real damage.
- Asset allocation, diversification and SIPs can help manage the effects of volatility.
Related Glossary Terms
- Market Risk
- Risk-Adjusted Return
- Risk and Return
- Rupee Cost Averaging
- Diversification
- Riskometer
- Asset Allocation
References
- AMFI, Mutual Funds Sahi Hai: Know how the Riskometer for a scheme is derived
- AMFI, Mutual Funds Sahi Hai: Different types of risk in equity funds
- SEBI Investor Website: Understanding the Riskometer
Educational Disclaimer
This content is published by FynnChintan Finserv for educational and informational purposes only. It is not personalised investment, tax or legal advice, and it is not a recommendation to buy or sell any scheme or security. All figures in the examples are illustrative and do not represent actual or expected returns. Mutual fund investments are subject to market risks; read all scheme-related documents carefully. Investment decisions should consider your financial goals, risk profile, investment horizon and the applicable scheme documents. FynnChintan Finserv is an AMFI-registered mutual fund distributor.
Want to understand risk more completely? Explore Market Risk and Risk-Adjusted Return in the FynnChintan Financial Glossary.
Frequently Asked Questions
Is volatility the same as risk?
Volatility is one common measure of risk, focusing on how much returns fluctuate. Risk is broader and includes the possibility of permanent loss, defaults, inflation eroding value, and not meeting your goals. A low-volatility investment can still carry other risks.
What is a good standard deviation for a mutual fund?
There is no universal good number. Standard deviation should be compared among funds in the same category over the same period. A large-cap fund will typically show lower standard deviation than a small-cap fund.
What is India VIX?
India VIX is a volatility index computed by NSE. It reflects the market's expectation of volatility in the Nifty 50 over the near term, based on index option prices. A rising VIX generally signals greater expected market swings.
Can volatility work in my favour?
For disciplined SIP investors, yes. Falling NAVs allow more units to be purchased for the same amount, which can improve long-term results when markets recover. However, recovery timing is never guaranteed.
How can I reduce volatility in my portfolio?
Diversify across asset classes such as equity, debt and gold, choose fund categories that match your risk profile, invest regularly rather than all at once, and keep short-term money in lower-volatility options.
This explanation is for general education only and is not investment advice. Mutual fund investments are subject to market risks; read all scheme-related documents carefully.