Volatility risk
The risk that a company's share price swings up and down over time, even when the company itself is not in danger of failing. One of the seven risks in the booklet.
In plain language
Share prices move every day. Sometimes they move a lot, for no reason that has anything to do with how well the company is doing.
That up-and-down movement is volatility, and the chance that it costs you money is volatility risk. The booklet defines it as "the risk when the stock prices of a company may fluctuate, even when those companies aren't in danger of failing."
The key words are "aren't in danger of failing". A sound company can still see its share price fall 20% in a bad month. If you have to sell in that month, you lose money, even though nothing is wrong with the business.
How it works
Where it sits. Chapter 5 lists seven key risks to check before investing: market (systematic) risk, unsystematic risk, inflation risk, liquidity risk, business risk, volatility risk and currency risk.
How it differs from its neighbours:
| Risk | What goes wrong |
|---|---|
| Business risk | The business itself may stop operating |
| Volatility risk | The share price swings, although the business is fine |
| Market (systematic) risk | The whole market or economy falls, e.g. bubbles and crashes |
How the booklet says to manage it (Chapter 5):
- Invest through a Systematic Investment Plan (SIP) of mutual funds, or buy shares in smaller lots over a period of time, instead of all at once.
- Understand the fundamentals of the company, so you can judge whether a price fall is about the company or only about the price.
- Ignore rumours and unsolicited messages about investing.
SIPs help because, in the booklet's words, "the investor benefits from the market volatility by getting to buy more units of the same fund when the markets are low and buying less units when the prices are high."
A worked example
Prices are illustrative.
Harpreet, in Ludhiana, has Rs 60,000 to invest in the shares of a well-run company. The price is Rs 300.
Plan A: all at once. She buys 200 shares for Rs 60,000. Next month the market is nervous and the price drops to Rs 240, though the company's sales are fine. Her holding is now worth Rs 48,000. If she panics and sells, she books a Rs 12,000 loss from volatility alone.
Plan B: in smaller lots. She invests Rs 20,000 each month for three months:
| Month | Price | Shares bought |
|---|---|---|
| 1 | Rs 300 | 66 (Rs 19,800) |
| 2 | Rs 240 | 83 (Rs 19,920) |
| 3 | Rs 270 | 74 (Rs 19,980) |
| Total | 223 shares for Rs 59,700 |
Her average cost is about Rs 267.71 (59,700 ÷ 223), below the Rs 300 she would have paid in Plan A. The dip that hurt Plan A let Plan B buy more shares cheaply.
Why NISM asks about it
Chapter 5 (Investment in Securities Market) lists volatility risk among the seven risks and gives the ways to manage it; the securities-market booklet repeats the definition among its key risks. Expect: which risk arises even when the company is not failing (volatility risk, not business risk), and how can it be managed (SIP, or buying in smaller lots over time).
Common exam traps
- Volatility risk is not business risk. Business risk is about the company stopping operations; volatility risk is about the price swinging while the company is fine.
- It is not the same as market risk. Market risk comes from the whole economy or market; volatility risk is described at the level of a company's share price.
- The booklet's remedy is SIP or smaller lots over time, not putting all the money in at once.
- Diversification (asset allocation) is the general remedy for risk; SIP and staggered buying are the specific remedy the booklet gives for volatility.
- Buying in smaller lots lowers the impact of swings; it does not guarantee a profit.
Where this is taught
- Series SEBI-ICE · Chapter 5: Investment in Securities Marketintroduced here
- Series X-A · Chapter 9: Investing in Fixed Income Securitiesintroduced here
Related terms
- Business riskThe variability of a firm's income flows caused by the nature of its business — driven by how volatile its sales are and how much of its cost base is fixed.
- Market riskThe risk of loss from movements in market prices — one named category in a manager's risk framework, alongside credit, liquidity and operational risk, and the one measured with VaR and stress tests.
- Unsystematic riskThe part of an investment's risk that belongs to one company or one issuer — a strike, a fraud, a downgrade — and which diversification can remove, unlike market-wide systematic risk.
- Systematic Investment PlanA facility to invest a constant amount into a scheme at regular intervals, which buys more units when the NAV is low and fewer when it is high and so averages the cost of acquisition down.
- DiversificationSpreading an exposure across holdings that do not move together, so that total risk falls by more than total return does — minimising risk per unit of return.
- Asset allocationThe decision on how to distribute a client's wealth across asset classes — the first decision in building a portfolio, and the one that explains most of what the portfolio then does.
- Market timingTrying to pick the exact best moment to buy or sell. The booklet calls it a "complex or even impossible duty" and offers regular investing (SIP, rupee cost averaging) instead.
- Risk appetiteAn investor's ability to take risk — one of four inputs, alongside age, financial situation and investment horizon, that the booklet says should shape how a person invests.
- Commodity price riskThe risk that a rise or fall in a commodity's price hurts either its producer or its user, which is why both sides use the commodity derivatives exchange to hedge against it.