Stocks and bonds are the two building blocks of most investment portfolios. Knowing how they differ helps you understand risk and decide how to balance growth and stability.
What is a stock?
A stock is a share of ownership in a company. If the company grows and becomes more profitable, the share price may rise, and some companies pay part of their profits as dividends. If the business struggles, the price can fall, and in the worst case, shares can become worthless.
What is a bond?
A bond is a loan you make to a government or company. In return, the borrower promises to pay you regular interest and return your original amount, called principal, on a set date. Bonds are often seen as more predictable than stocks, but they still carry risk.
| Feature | Stocks | Bonds |
|---|---|---|
| What you own | A share of a company | A loan to a borrower |
| Potential return | Higher over long periods, but uncertain | Generally lower and more predictable |
| Income | Dividends, not guaranteed | Regular interest payments |
| Main risk | Price swings and losses | Borrower default and interest rate risk |
| Best for | Long-term growth | Stability and income |
The main risks
- Stock market risk: prices can fall sharply, sometimes for long stretches.
- Interest rate risk (bonds): when interest rates rise, the market price of existing bonds usually falls.
- Credit risk (bonds): the borrower may fail to pay. Government bonds from stable countries are generally seen as lower risk than corporate bonds.
- Inflation risk: rising prices can erode the real value of fixed payments.
Why many investors hold both
Stocks and bonds often behave differently. When stocks fall, high-quality bonds have sometimes held up better, which can smooth the ride. That is not guaranteed. In 2022, for example, both stocks and many bonds fell at the same time as interest rates rose. Still, mixing asset types is a core idea behind diversification.
What is asset allocation?
Asset allocation means deciding how to divide your money between stocks, bonds and cash. Someone with decades until retirement may hold more in stocks, since they have time to recover from downturns. Someone closer to needing the money may hold more in bonds and cash. There is no single correct mix. It depends on your goals, timeline and comfort with risk.
Simple ways to get started
- Broad stock index funds or ETFs for growth.
- Bond index funds or ETFs for stability.
- Target-date funds that adjust the mix automatically as you get closer to a goal.
- Rebalancing once a year to keep your mix close to your plan.
Bond terms in plain language
- Coupon: the fixed interest a bond pays each year, usually as a percentage of its face value.
- Maturity: the date when the borrower repays the principal.
- Yield: the return you would earn if you bought at today's price and held to maturity.
- Duration: a measure of how sensitive a bond's price is to changes in interest rates. Longer-term bonds usually fall more when rates rise.
Bond prices and yields move in opposite directions. If you hold a bond paying 3% and new bonds start paying 5%, your bond becomes less attractive, so its market price drops. If you hold it to maturity and the borrower pays, you still get the promised interest and principal back.
Cash and savings accounts are often described as a third building block. They are less volatile, but their returns may not keep up with inflation.
Frequently asked questions
Are bonds risk-free?
No. They can lose value if rates rise, and borrowers can default.
Which is better, stocks or bonds?
Neither is better in every situation. They serve different roles depending on your goals and time horizon.
How much should I hold in each?
It depends on your age, goals and risk tolerance. A licensed advisor can help you decide.
This article is for general educational purposes only and is not financial, investment, tax or legal advice. Rules, rates and figures change and differ by country, so check current information and consider speaking with a licensed professional before making decisions.