What Risk Really Means and Why It Matters

Risk Is Not Just "Losing Money"

When most people hear "investment risk," they think of losing money. That is part of it, but risk in investing has a more specific meaning: it is the degree to which the actual return on an investment can differ from what you expected. A savings account has very low risk because the return is predictable. A single stock has high risk because its price can swing dramatically in either direction.

Here is something that often gets overlooked: there is also risk in being too conservative. If your savings are only earning 1-2% and inflation is running at 3-4%, your money is losing purchasing power every year even though the dollar amount is going up. This is called inflation risk, and it is especially relevant for long-term goals like retirement.

Types of Risk

Market risk is the risk that the overall market declines, pulling most investments down with it. Even well-run companies can lose value during a broad downturn. This type of risk cannot be eliminated through diversification -- it comes with participating in the market.

Concentration risk is the risk of having too much of your money in a single investment, sector, or asset type. If 80% of your retirement account is in your employer's stock and that company hits trouble, your job and your retirement savings are both affected at the same time. Spreading money across different types of investments is a widely recognized way to manage this risk.

Interest rate risk primarily affects bonds. When interest rates rise, existing bond prices tend to fall because newer bonds are issued at the higher rate, making the older, lower-rate bonds less attractive. The longer the bond's maturity, the more sensitive it typically is to interest rate changes.

Liquidity risk is the risk that you cannot sell an investment quickly without taking a significant loss. Publicly traded stocks and bonds are generally liquid -- you can sell them any business day. Real estate, private investments, and certain alternative assets are much less liquid.

Risk and Time

Time horizon is one of the most important factors in thinking about risk. Historically, the stock market has experienced significant short-term declines but has trended upward over longer periods. This is why people with decades until retirement may have a different approach than someone five years away. The longer the timeline, the more time there is to recover from downturns. The shorter the timeline, the less room there is for volatility.