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James Chen, CMT is an expert trader, investment adviser, and global market strategist. He has authored books on technical analysis and foreign exchange trading published by John Wiley and Sons and served as a guest expert on CNBC, BloombergTV, Forbes, and Reuters among other financial media.
Investopedia / Mira Norian
Risk is defined in financial terms as the chance that an outcome or investment’s actual gains will differ from an expected outcome or return. Risk includes the possibility of losing some or all of an original investment.
Quantifiably, risk is usually assessed by considering historical behaviors and outcomes. In finance, standard deviation is a common metric associated with risk. Standard deviation provides a measure of the volatility of asset prices in comparison to their historical averages in a given time frame.
Overall, it is possible and prudent to manage investing risks by understanding the basics of risk and how it is measured. Learning the risks that can apply to different scenarios and some of the ways to manage them holistically will help all types of investors and business managers to avoid unnecessary and costly losses.
Everyone is exposed to some type of risk every day—whether it’s from driving, walking down the street, investing, capital planning, or something else. An investor’s personality, lifestyle, and age are some of the top factors to consider for individual investment management and risk purposes. Each investor has a unique risk profile that determines their willingness and ability to withstand risk. In general, as investment risks rise, investors expect higher returns to compensate for taking those risks.
A fundamental idea in finance is the relationship between risk and return. The greater the amount of risk an investor is willing to take, the greater the potential return. Risks can come in various ways and investors need to be compensated for taking on additional risk. For example, a U.S. Treasury bond is considered one of the safest investments and when compared to a corporate bond, provides a lower rate of return. A corporation is much more likely to go bankrupt than the U.S. government. Because the default risk of investing in a corporate bond is higher, investors are offered a higher rate of return.
Quantifiably, risk is usually assessed by considering historical behaviors and outcomes. In finance, standard deviation is a common metric associated with risk. Standard deviation provides a measure of the volatility of a value in comparison to its historical average. A high standard deviation indicates a lot of value volatility and therefore a high degree of risk.
Individuals, financial advisors, and companies can all develop risk management strategies to help manage risks associated with their investments and business activities. Academically, there are several theories, metrics, and strategies that have been identified to measure, analyze, and manage risks. Some of these include: standard deviation, beta, Value at Risk (VaR), and the Capital Asset Pricing Model (CAPM). Measuring and quantifying risk often allows investors, traders, and business managers to hedge some risks away by using various strategies including diversification and derivative positions.
While it is true that no investment is fully free of all possible risks, certain securities have so little practical risk that they are considered risk-free or riskless.
Riskless securities often form a baseline for analyzing and measuring risk. These types of investments offer an expected rate of return with very little or no risk. Oftentimes, all types of investors will look to these securities for preserving emergency savings or for holding assets that need to be immediately accessible.
Examples of riskless investments and securities include certificates of deposits (CDs), government money market accounts, and U.S. Treasury bills. The 30-day U.S. Treasury bill is generally viewed as the baseline, risk-free security for financial modeling. It is backed by the full faith and credit of the U.S. government, and, given its relatively short maturity date, has minimal interest rate exposure.
Time horizon and liquidity of investments is often a key factor influencing risk assessment and risk management. If an investor needs funds to be immediately accessible, they are less likely to invest in high risk investments or investments that cannot be immediately liquidated and more likely to place their money in riskless securities.
Time horizons will also be an important factor for individual investment portfolios. Younger investors with longer time horizons to retirement may be willing to invest in higher risk investments with higher potential returns. Older investors would have a different risk tolerance since they will need funds to be more readily available.
Morningstar is one of the premier objective agencies that affixes risk ratings to mutual funds and exchange-traded funds (ETFs). An investor can match a portfolio’s risk profile with their own appetite for risk.
Every saving and investment action involves different risks and returns. In general, financial theory classifies investment risks affecting asset values into two categories: systematic risk and unsystematic risk. Broadly speaking, investors are exposed to both systematic and unsystematic risks. 
Systematic risks, also known as market risks, are risks that can affect an entire economic market overall or a large percentage of the total market. Market risk is the risk of losing investments due to factors, such as political risk and macroeconomic risk, that affect the performance of the overall market. Market risk cannot be easily mitigated through portfolio diversification. Other common types of systematic risk can include interest rate risk, inflation risk, currency risk, liquidity risk, country risk, and sociopolitical risk.
Unsystematic risk, also known as specific risk or idiosyncratic risk, is a category of risk that only affects an industry or a particular company. Unsystematic risk is the risk of losing an investment due to company or industry-specific hazard. Examples include a change in management, a product recall, a regulatory change that could drive down company sales, and a new competitor in the marketplace with the potential to take away market share from a company. Investors often use diversification to manage unsystematic risk by investing in a variety of assets.
In addition to the broad systematic and unsystematic risks, there are several specific types of risk, including:
Business risk refers to the basic viability of a business—the question of whether a company will be able to make sufficient sales and generate sufficient revenues to cover its operational expenses and turn a profit. While financial risk is concerned with the costs of financing, business risk is concerned with all the other expenses a business must cover to remain operational and functioning. These expenses include salaries, production costs, facility rent, office, and administrative expenses. The level of a company’s business risk is influenced by factors such as the cost of goods, profit margins, competition, and the overall level of demand for the products or services that it sells.
Credit risk is the risk that a borrower will be unable to pay the contractual interest or principal on its debt obligations. This type of risk is particularly concerning to investors who hold bonds in their portfolios. Government bonds, especially those issued by the federal government, have the least amount of default risk and, as such, the lowest returns. Corporate bonds, on the other hand, tend to have the highest amount of default risk, but also higher interest rates. Bonds with a lower chance of default are considered investment grade, while bonds with higher chances are considered high yield or junk bonds. Investors can use bond rating agencies—such as Standard and Poor’s, Fitch and Moody’s—to determine which bonds are investment-grade and which are junk.
Country risk refers to the risk that a country won’t be able to honor its financial commitments. When a country defaults on its obligations, it can harm the performance of all other financial instruments in that country—as well as other countries it has relations with. Country risk applies to stocks, bonds, mutual funds, options, and futures that are issued within a particular country. This type of risk is most often seen in emerging markets or countries that have a severe deficit.
When investing in foreign countries, it’s important to consider the fact that currency exchange rates can change the price of the asset as well. Foreign exchange risk (or exchange rate risk) applies to all financial instruments that are in a currency other than your domestic currency. As an example, if you live in the U.S. and invest in a Canadian stock in Canadian dollars, even if the share value appreciates, you may lose money if the Canadian dollar depreciates in relation to the U.S. dollar.
Interest rate risk is the risk that an investment’s value will change due to a change in the absolute level of interest rates, the spread between two rates, in the shape of the yield curve, or in any other interest rate relationship. This type of risk affects the value of bonds more directly than stocks and is a significant risk to all bondholders. As interest rates rise, bond prices in the secondary market fall—and vice versa.
Political risk is the risk an investment’s returns could suffer because of political instability or changes in a country. This type of risk can stem from a change in government, legislative bodies, other foreign policy makers, or military control. Also known as geopolitical risk, the risk becomes more of a factor as an investment’s time horizon gets longer.
Counterparty risk is the likelihood or probability that one of those involved in a transaction might default on its contractual obligation. Counterparty risk can exist in credit, investment, and trading transactions, especially for those occurring in over-the-counter (OTC) markets. Financial investment products such as stocks, options, bonds, and derivatives carry counterparty risk.
Liquidity risk is associated with an investor’s ability to transact their investment for cash. Typically, investors will require some premium for illiquid assets which compensates them for holding securities over time that cannot be easily liquidated.
The risk-return tradeoff is the balance between the desire for the lowest possible risk and the highest possible returns. In general, low levels of risk are associated with low potential returns and high levels of risk are associated with high potential returns. Each investor must decide how much risk they’re willing and able to accept for a desired return. This will be based on factors such as age, income, investment goals, liquidity needs, time horizon, and personality.
The following chart shows a visual representation of the risk/return tradeoff for investing, where a higher standard deviation means a higher level or risk—as well as a higher potential return.  
It’s important to keep in mind that higher risk doesn’t automatically equate to higher returns. The risk-return tradeoff only indicates that higher risk investments have the possibility of higher returns—but there are no guarantees. On the lower-risk side of the spectrum is the risk-free rate of return—the theoretical rate of return of an investment with zero risk. It represents the interest you would expect from an absolutely risk-free investment over a specific period of time. In theory, the risk-free rate of return is the minimum return you would expect for any investment because you wouldn’t accept additional risk unless the potential rate of return is greater than the risk-free rate.
The most basic—and effective—strategy for minimizing risk is diversification. Diversification is based heavily on the concepts of correlation and risk. A well-diversified portfolio will consist of different types of securities from diverse industries that have varying degrees of risk and correlation with each other’s returns.
While most investment professionals agree that diversification can’t guarantee against a loss, it is the most important component to helping an investor reach long-range financial goals, while minimizing risk.
There are several ways to plan for and ensure adequate diversification including: 
Keep in mind that portfolio diversification is not a one-time task. Investors and businesses perform regular “check-ups” or rebalancing to make sure their portfolios have a risk level that’s consistent with their financial strategy and goals.
We all face risks every day—whether we’re driving to work, surfing a 60-foot wave, investing, or managing a business. In the financial world, risk refers to the chance that an investment’s actual return will differ from what is expected—the possibility that an investment won’t do as well as you’d like, or that you’ll end up losing money.
The most effective way to manage investing risk is through regular risk assessment and diversification. Although diversification won’t ensure gains or guarantee against losses, it does provide the potential to improve returns based on your goals and target level of risk. Finding the right balance between risk and return helps investors and business managers achieve their financial goals through investments that they can be most comfortable with.
Financial Industry Regulatory Authority. "The Reality of Investment Risk."
U.S. Securities and Exchange Commission. "Assessing Your Risk Tolerance."
Federal Reserve Bank of San Francisco. "In Times of Financial Stress, What Typically Happens to the Difference Between Interest Rates on Corporate Bonds and U.S. Treasury Bonds?"
U.S. Securities and Exchange Commission. "What Is Risk?"
U.S. Securities and Exchange Commission. "Treasury Securities."
U.S. Department of the Treasury. "Treasury Bills."
U.S. Securities and Exchange Commission. "Asset Allocation."
Morningstar. "Morningstar Ratings 101: What You Need to Know."
Financial Industry Regulatory Authority. "Investment Risk, Explained."
Office of the Comptroller of the Currency. "Counterparty Risk."
Financial Industry Regulatory Authority. "Diversifying Your Portfolio."
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