There have been 97 convertible bond issues totaling $54.3 billion so far this year, a record pace. The average coupon on these bonds has been 1.41 percent, with 28 convertibles issued at a zero coupon rate. And the average conversion premium is 39 percent. One issue with convertible bonds is that dilution may occur if the bonds are converted. Companies often pay $10 million or more to protect against dilution. Some of the biggest issues and conversion premiums occurred in February and March, before interest rates rose. For example, in February, Expedia issued $1 billion in convertibles with a conversion premium of 72.5 percent, and Airbnb issued $2 billion in convertibles with a conversion premium of 60 percent. The large conversion premiums to indicate a high level of confidence by bond buyers.
