What is the additional risk for trading CBBCs as opposed to warrants?

CBBCs are a type of leveraged investment. They may involve a higher degree of risk and are not suitable for all types of investors. You should consider your risk appetite prior to trading in any CBBC. In any case, you should not trade in a CBBC unless you understand the nature of the product and the related transaction costs involved and are prepared to lose your entire investment amount, since a CBBC will be called by the issuer and expire early due to the occurrence of a mandatory call event when the price or level of the underlying asset hits its call price or level. The payoff for a Category N CBBC is zero when it expires early due to the occurrence of a mandatory call event. When a Category R CBBC expires early due to the occurrence of a mandatory call event, the holder may receive a small residual value payment, but there may be no residual value payment in some situations.