TLDR:
A convertible bond is a debt security that pays interest like a regular bond but gives the holder the right to convert the bond into a predetermined number of shares of the issuer at a future date. Convertible bonds combine downside protection (debt repayment) with upside participation (equity conversion), making them attractive instruments for growth-stage companies and growth-equity investors.
Convertible Bonds vs. Convertible Notes
Both convert debt to equity, but they differ in context and structure. Convertible notes are typically used in early-stage venture financing (pre-priced rounds), with conversion at the next priced equity round. Convertible bonds are typically used by more mature companies (growth-stage private or public), with conversion at a fixed price set at issuance. Convertible notes are shorter-term (12-24 months) with no public trading; convertible bonds have longer maturities (3-7 years) and may trade on public markets. Pricing complexity differs significantly: convertible bonds require sophisticated valuation incorporating credit spread, equity volatility, and embedded option value.
Convertible Bond Structure
A typical convertible bond specifies: principal amount, coupon rate (typically lower than non-convertible bonds because of the conversion value), maturity, conversion ratio (number of shares per bond), conversion price (effective price per share when converted—typically at 20-40% premium to share price at issuance), conversion period (when conversion is available), call provisions (issuer’s right to redeem early, often if share price exceeds threshold for sustained period), and anti-dilution protection. The “conversion premium” balances the issuer’s cost (higher premium = better terms for issuer) against the bond’s attractiveness to investors.
Use Cases
Convertible bonds appear in: late-stage private growth financings (Spotify, Stripe, Airbnb pre-IPO used convertible structures), public company financings (a way to raise capital without immediate dilution at current low share prices), distressed exchanges (creditors swap debt for convertibles in restructurings), and as components of M&A consideration (combining buyer convertibles with cash). For mature companies, convertibles provide capital at lower interest cost than straight debt while offering investors upside participation. Türkiye uses convertible bond structures less frequently than developed markets but has growing precedent in TL-denominated and Eurobond convertible issuances by large industrial groups.