What Are Convertible Bonds

A convertible bond starts life as a normal debt instrument. The issuer promises coupon payments and repayment of principal at maturity. The distinctive feature is the conversion right: each bond can be exchanged for a defined number of shares, known as the conversion ratio, which implies a conversion price. If the share price rises well above the conversion price, the bond's value tends to track the equity. If the share price stays low, the bond behaves more like ordinary debt and its value depends on the issuer's ability to pay. The exact terms, including conversion windows, adjustments for corporate actions and any issuer call features, are set out in the bond's prospectus or indenture, and those documents are the only reliable source for how a specific convertible behaves.

Companies often issue convertible bonds because the embedded conversion option lets them offer a lower coupon than a comparable plain bond. Investors accept the lower income in exchange for potential upside if the shares perform. The trade-offs matter on both sides. For the investor, the lower coupon means weaker income if the shares never approach the conversion price. Conversion also depends on the company's fortunes: the equity option is only valuable if the business does well, and the debt claim is only safe if the issuer remains solvent. For existing shareholders, conversion creates new shares and dilutes ownership, which is one reason share prices can react to convertible issuance. Terms used here are defined in the Glossary at /glossary.

Convertible bonds carry credit risk: if the issuer's finances deteriorate, both the coupon stream and the principal are at risk, and the conversion option may become worthless at the same time. They also carry interest rate risk, since bond values generally fall when rates rise, and liquidity risk, because some convertible issues trade thinly. Before buying, read the full terms for call provisions, conversion adjustments and seniority in the issuer's capital structure. If you plan to access convertibles through a broker, whether directly or via funds, confirm in the broker's current documents which instruments are actually available to your account type, what fees apply and how the assets are held. The Education hub at /education covers related bond topics, and the Find my broker tool at /find-my-broker can help structure that verification workflow.