A convertible bond is a type of bond that include the option for the bondholder to convert the bond into the share of issuing company’s common stock. The conversion ratio of convertible bond determines the amount and number of shares of stock that bondholder will receive upon conversion. The conversion ratio is typically expressed as a fixed number of shares per bond or the ratio between shares and bonds.
The conversion ratio is the crucial factor that determine the value and attractiveness of the convertible bonds. A low conversion ratio means that the bondholder will receive fewer share per bond when they convert, making the conversion less attractive.