What is a Bond?
At its core, a bond is a formal loan you make to a borrower.
When major entities—like corporations, local municipalities, or federal governments—need to raise large sums of money to fund public projects, build infrastructure, or expand business operations, they often issue bonds. Instead of going to a traditional bank, they open the opportunity up to the public.
When you buy a bond, you are acting as the lender (the creditor), and the organization issuing the bond is the borrower (the debtor).
The Anatomy of a Bond
To understand how they work, you need to know the three foundational terms attached to every bond:
- Face Value (Par Value): This is the principal amount of money the bond is worth when it is issued, and it is the exact amount the borrower promises to pay you back when the loan term ends.
- Coupon Rate (Interest Rate): This is the fixed annual interest rate the issuer agrees to pay you. For instance, if you buy a $1,000 bond with a 5% coupon rate, you will receive $50 in interest every year. These are usually paid out semi-annually or annually.
- Maturity Date: This is the pre-determined “expiration date” of the loan. It dictates exactly how long your money will be loaned out—ranging from a few months (short-term) to 30 years or more (long-term). On this date, the issuer returns your full face value principal.
How Do They Actually Work? (An Example)
Let’s look at a quick real-world scenario:
Imagine you purchase a newly issued 10-year government bond with a face value of $1,000 and a fixed 4% coupon rate.
- Year 1 through Year 10: Every year, the government will pay you $40 in interest (4% of $1,000).
- At the End of Year 10 (Maturity): The bond reaches its maturity date. The government sends you your final interest payment, plus your original $1,000 principal back.
Over the decade, you kept your initial investment safe while safely pocketing $400 in passive income.
Can You Sell a Bond Before It Matures?
Yes! You don’t have to hold a bond until its maturity date. Bonds are actively traded on the “secondary market,” much like stocks. However, because market interest rates are constantly changing, the trading price of your bond can fluctuate:
- If market interest rates fall: Your older bond with a higher fixed interest rate becomes highly desirable, allowing you to sell it at a premium (more than its face value).
- If market interest rates rise: New bonds will offer higher returns, making your older, lower-paying bond less attractive. If you want to sell it, you will have to do so at a discount (less than its face value).
Why Do Investors Buy Bonds?
- Capital Preservation: They are legally binding contracts. Barring a default by the issuer, you are guaranteed to get your initial principal back.
- Steady Income Streams: They provide predictable, fixed financial returns, making them incredibly popular for retirees or conservative investors.
- Portfolio Diversification: Historically, when stock markets go through turbulent periods, the bond market often remains stable or moves in the opposite direction, offsetting risk.
Source & Further Reading: To read the full comprehensive guide on bond categories, risks, and trading strategies, check out the official PIMCO Guide on Bonds.