Quick Answer
A convertible security lets the holder exchange it, at the holder's option, for a fixed number of common shares, so it pays a lower coupon or dividend than a comparable non-convertible security. Forced conversion happens when a call's conversion value exceeds the call price, so a rational holder converts instead of accepting the lower proceeds.
The conversion feature is an option, and options are never free. This section covers what that feature costs the holder in current income, and what happens when an issuer calls a convertible security.
What Is a Convertible Security Worth to the Holder?
- A convertible security (bond or preferred stock) gives the holder, at the holder's option, the right to exchange it for a fixed number of the issuer's common shares.
- Conversion ratio = Par value / Conversion price.
- Conversion value = Conversion ratio x current common stock market price.
- The conversion feature has value to the holder, so a convertible security pays a lower coupon or dividend than a comparable non-convertible security. A customer who wants both current income and a claim on the issuer's stock upside gets that combination through the conversion feature, in exchange for giving up some current yield.
What Happens During a Forced Conversion?
- Forced conversion: when an issuer calls a convertible security and the conversion value exceeds the call price, a rational holder converts into common stock rather than accept the lower call proceeds. The issuer does not convert the security directly; the economics leave the holder no better choice.
- A forced conversion changes what began as a fixed-income security into a common stock position, shifting the risk, return, and income profile of that part of the portfolio on the issuer's timing, not the customer's. A convertible bond gave a scheduled return of principal at maturity; a convertible preferred gave a stated par claim ahead of common. The common stock gives neither.
- What that does to the customer's objective: a customer who bought the convertible for dependable income and a claim ahead of common is left with a security that pays a dividend only when one is declared and ranks last in a liquidation. The objective has not changed. The holding that served it is gone, on the issuer's schedule.
Exam Tip: Gotchas
- "Forced" describes the economic incentive, not a direct action by the issuer. The issuer calls the bond; the holder chooses to convert because the conversion value beats the call price. Picturing the issuer converting the security directly has the mechanism backwards.
What Should You Check on Exam Day?
- Recompute conversion value from the current stock price before comparing it to the call price; the comparison is what decides forced conversion.
- Confirm who acts in a forced conversion: the issuer calls, the holder decides to convert, not the other way around.
- Track what a forced conversion changes: a fixed-income position becomes a common stock position, on the issuer's schedule.