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Convertible Bonds: Features and Advantages

Convertible bonds are fixed income securities with equity features, since they can be turned in common stock. They can provide a higher current yield and less downside, and are usually valued through a “breakeven” analysis.

What are Convertible Bonds?

A convertible bond gives the holder the right to “convert” or exchange the par amount of the bond for common shares of the issuer at some fixed ratio during a particular period. As bonds, they have some characteristics of fixed income securities. Their conversion feature also gives them features of equity securities.

Features of Convertible Bonds

Coupon Payments

Convertible bonds have a coupon payment and are legally debt securities, which rank prior to all equity securities in a default situation. Their value, like all bonds, depends on the level of prevailing interest rates and the credit quality of the issuer.

Exchange Features

The exchange feature of a convertible bond gives the right for the holder to convert the par amount of the bond for common shares at a specified price or “conversion ratio.” For example, a conversion ratio might give the holder the right to convert $100 par amount of the convertible bonds of Ensolvint Corporation into its common shares at $25 per share. This conversion ratio would be said to be “ 4:1″ or “four to one.”

Share Price

The share price affects the value of a convertible substantially. Taking our example, if the shares of Ensolvint were trading at $10, and the convertible was at a market price of $100, there would be no economic reason for an investor to convert the convertible bonds. For $100 par amount of the bond the investor would only get four shares of Ensolvint with a market value of $40. You might ask why the convertible was trading at $100 in this case. The answer would be that the yield of the bond justified this price. If the normal bonds of Ensolvint were trading at 10% yields and the yield of the convertible was 10%, bond investors would buy the bond and keep it at $100. A convertible bond with an “exercise price” far higher than the market price of the stock is called a “busted convertible” and generally trades at its bond value, although the yield is usually a little higher due to its lower or “subordinate” credit status.


Think of the opposite. When the share price attached to the bond is sufficiently high or “in the money,” the convertible begins to trade more like equity. If the exercise price is much lower than the market price of the common shares, the holder of the convertible can convert into the stock at an attractive rate. If the exercise price is $25 and the stock is trading at $50, the holder can get four shares for $100 par amount that have a market value of $200. This would force the price of the convertible above the bond value and its market price should be above $200 since it would have a higher yield than the common shares.

The Advantages of Convertible Bonds

Issuers sell convertible bonds to provide a higher current yield to investors and equity capital upon conversion. Investors buy convertible bonds to gain a higher current yield and less downside, since the convertible should trade to its bond value in the case of a steep drop in the common share price.

Investors traditionally use “breakeven” analysis to compare the coupon payment of the convertible to the dividend yield of the common shares. Modern techniques of option analysis examine the convertible as a bond with an equity option attached and value it in this manner.