A red number in an investment app can frighten even someone planning to invest for many years. All it takes is for the portfolio’s value to fall by a few percent in a week for the question to arise: has the investment suddenly become dangerous? On the other hand, there are products whose displayed value barely moves, yet they can still cause you to lose some of your money or purchasing power.
Volatility describes how much and how often an investment’s price changes. Risk is a broader concept: it includes the possibility of financial loss, lack of access to your money, issuer failure and declining purchasing power. A volatile investment can be problematic over a short time horizon, but a calm chart alone does not prove that it is safe. When assessing an investment, it is important to know what loss you could not afford to bear and when you will need the money.
What exactly does volatility mean?
Volatility captures the degree of fluctuations in price or returns. If an investment’s price moves sharply up and down every day, it is more volatile than one whose price changes only slightly. For financial products, volatility is often expressed statistically, for example as the standard deviation of historical returns. It is information about observed fluctuations, not a forecast of future returns.
Imagine two hypothetical investments of €1,000 each. Over a month, the value of the first moves between €950 and €1,050, while the second ranges between €700 and €1,300. In this simplified example, the second has greater price swings. However, the ranges alone are not enough for a precise statistical calculation of volatility, because we need the full time series of returns and a chosen methodology.
FINRA describes stock volatility as the magnitude and frequency of price movements. It notes that volatility is an important measure of investment risk, but not a complete description of it. An investment may have experienced a relatively calm period in the past and still fall sharply in the future following an unexpected event.
Is a decline automatically volatility, while growth is not?
No. Volatility concerns fluctuations in both directions. A price that rises rapidly and then falls rapidly is volatile; periods of sharp gains can also have high volatility. Investors generally perceive declines more emotionally, however, because they directly show the possibility of a loss.
Volatility also depends on the time period considered. Daily, monthly and annual fluctuations do not tell you exactly the same thing. Comparing two products using charts with different time periods or scales can create the false impression that one is significantly steadier.
Risk Is More Than the Movement of a Line
The U.S. Investor.gov defines investment risk in terms of uncertainty and possible financial loss. FINRA highlights several forms of risk: market, business, inflation, interest-rate, currency, liquidity and concentration risk. Some appear directly in the daily price, while others emerge only when a particular event occurs.
For example, if you hold a bond issued by an entity that stops meeting its obligations, the problem is not merely ordinary price fluctuation. It may be a risk of debt default. If your money is in a product you cannot exit in time without taking a substantial discount, that is liquidity risk. And if your savings do not decline in nominal terms but rising prices reduce the amount of goods you can buy with them, inflation risk is at work.
Risks often combine. A foreign stock may fluctuate because of the company’s results, while its value in euros also changes because of exchange-rate movements. A bond may react to interest rates while also carrying the issuer’s credit risk. A single indicator therefore cannot explain the whole picture.
Why Might a Smooth Chart Not Mean a Safe Product?
Not every asset has a continuously available market price. For some investments, the value is updated infrequently or is based on a valuation model. The chart may then look exceptionally smooth, even though the actual price at which the investment could be sold quickly is uncertain. The absence of a daily decline in an app does not mean the absence of economic risk.
Illustrative example: someone invests €10,000 in a product that reports roughly the same value every few months. But if they want to withdraw the money earlier, they may find that selling is restricted or that they would have to accept a substantial discount. The problem becomes fully apparent only when they try to obtain cash.
Likewise, even a bank deposit without price fluctuations is not entirely risk-free. Eligible deposits may be covered by statutory deposit protection, but factors such as inflation and the specific terms for accessing the money still need to be considered. Therefore, compare the legal nature of the product, not just its value chart.
Why Does Your Investment Horizon Matter?
An investment horizon is the length of time before you will need the money. In its discussion of asset allocation, Investor.gov explains that a longer horizon and the ability to bear losses can affect how much fluctuation a person is willing to accept. A short horizon increases the importance of the risk that the market will be down just when you need to withdraw the money.
Imagine a reserve fund for a roof repair that must be paid for in three months. If a sharp decline hits its value in the meantime, you do not have years to wait or any guarantee of recovery. By contrast, with a long-term goal, not every short-term decline has to mean an immediate need to act. However, even a long horizon does not guarantee a positive outcome, and not every investment recovers from a loss.
The difference between the psychological and financial ability to withstand a decline also matters. Someone may have savings and a stable income but panic when their investment falls by 10%. Someone else may be willing to tolerate large swings but needs the invested money for an upcoming payment. Both situations require a different way of thinking about risk.
What Does Diversification Do, and What Can’t It Do?
Diversification means spreading money across multiple investments, sectors or asset types. Its aim is to limit the consequences if a single company or narrowly focused investment fails. Investor.gov describes both asset allocation and diversification as important elements of portfolio management.
If you own just one stock, the company’s performance has a major effect on your overall wealth. A broadly diversified portfolio reduces dependence on a single company, but it does not eliminate a general decline in stock markets. Even dozens of different securities are not true diversification if they all depend on the same sector or economic event.
Likewise, diversification does not guarantee that the total value will never fall. It is useful to understand what the investments hold, which risks are repeated and whether the portfolio has more overlap than the number of positions shown in an app suggests.
How Should You Read Risk Information for a Fund or ETF?
First, find out what the product invests in. A broad stock index, a short-term bond fund and a narrowly focused sector fund have different sources of risk. Then consider the investment horizon, fees, currency, historical fluctuations and options for withdrawing money. The fact that a product made money last year alone does not tell you how it would perform during the next downturn.
For funds intended for retail investors, look for the key information document and an explanation of the risk indicator. The indicator is a summary based on a prescribed methodology, not insurance against losses. Also pay attention to warnings about possible issuer failure, currency risk, concentration and liquidity restrictions.
One useful illustrative question to ask is: “What specifically would have to happen for me to lose money here, and when can I access it?” With products offering unclear returns or promising high rewards without risk, understanding the mechanism matters more than watching a smooth marketing curve.
Does High Volatility Automatically Mean a Bad Investment?
It is not that simple. High volatility is information about price movements, and for a particular goal it may be unacceptable. By itself, however, it does not determine whether an investment is suitable for a particular person or whether it will generate a return. Conversely, low historical volatility may overlook other risks that occur rarely but have a significant impact.
Rather than comparing a single number, separate the questions: What price fluctuations could occur? Could I lose some or all of my capital? Can I access the money in time? Do I need it by a specific date? Do I understand the issuer, fees and currency of the investment? Only these answers give risk a concrete meaning.
This text is for informational purposes only and does not constitute financial advice.
Sources
- FINRA – Stocks (explanation of price volatility and other types of stock risk) – https://www.finra.org/investors/investing/investment-products/stocks
- FINRA – Risk (market, liquidity, inflation and concentration risk) – https://www.finra.org/investors/investing/investing-basics/risk
- Investor.gov – What Is Risk? (risk as uncertainty and possible financial loss) – https://www.investor.gov/introduction-investing/investing-basics/what-risk
- Investor.gov – Asset Allocation and Diversification (time horizon, risk tolerance and diversification) – https://www.investor.gov/introduction-investing/getting-started/asset-allocation
Gabriel Čatár
I'm interested in everyday things we encounter but don't always understand. From technology and personal finance to practical guides and fascinating facts about the world. At Offpitch, I focus on topics worth exploring in greater depth, checking the facts and explaining them in a clear, accessible way. My goal is to make sure readers take away something useful from every article.
