CBBCs Explained: Callable Bull/Bear Contracts
What are CBBCs (恒指牛熊證) — how the mandatory call level, Category N vs Category R, and residual value work, and how they differ from a standard structured warrant.
By warrants.asia Editorial Team · Published July 14, 2026 · Updated July 18, 2026
What are CBBCs?
CBBCs (Callable Bull/Bear Contracts) are a warrant-like structured product, most actively traded on HKEX, with a mandatory call price — if the underlying hits that level, the contract is called early and trading stops immediately, capping losses at a known amount but also ending any chance the position recovers before the original maturity date. This mandatory call is the defining feature that separates a CBBC from a standard derivative warrant, which has no such early-termination mechanism.
Bull vs bear CBBCs
A bull CBBC gains value as the underlying rises and is called if it falls to the call level; a bear CBBC gains value as the underlying falls and is called if it rises to the call level. Because the call level sits close to the entry price relative to a standard warrant's strike, CBBCs typically move in closer lockstep with the underlying (higher effective delta) but carry the real risk of being called out of the position entirely on a sharp adverse move — a risk a standard warrant holder, who can simply hold to expiry, doesn't face in the same way.
Category N vs Category R, and residual value
CBBCs list in two categories that determine what happens at the moment of a mandatory call. Category N CBBCs set the call price equal to the strike price — once called, the contract terminates with zero residual value, since there's no gap between the two levels for any leftover value to exist in. Category R CBBCs set the call price at a level distinct from the strike, leaving a gap between them; if called, the issuer calculates a residual value from that gap and pays it out to holders, rather than the position going to zero outright.
This distinction matters when comparing two CBBCs on the same underlying: a Category R contract offers a partial cushion if called, while a Category N contract offers none — that difference is usually reflected in the funding cost and price the issuer quotes for each.
A worked HSI CBBC example
Take a bull CBBC on the HSI with a strike of 26,000, a call level of 26,200 (Category R, so a gap exists), and the index currently at 27,000. If the HSI falls to 26,200 before expiry, the CBBC is called immediately; the issuer then calculates residual value from the 200-point gap between the call level and strike, adjusted for the entitlement ratio, and pays that out — a much smaller amount than if the position had been held to a normal expiry with the index still above the strike. This is the mandatory-call risk described in the flagship structured warrants guide, specific to CBBCs.
FAQ
What are CBBCs?
CBBCs (Callable Bull/Bear Contracts) are a warrant-like structured product with a mandatory call price — if the underlying hits that level, the contract is called early, capping losses (and potential gains) at a known amount.
What's the difference between Category N and Category R CBBCs?
Category N sets the call price equal to the strike price, so a mandatory call pays zero residual value. Category R sets the call price at a different level from the strike, so a mandatory call pays a partial residual value calculated from the gap between the two.
Are CBBCs riskier than standard structured warrants?
CBBCs carry an additional risk standard warrants don't: being called out of the position entirely if the underlying touches the call level, even briefly, ending the trade before the original expiry date regardless of where the underlying moves afterward.
Sources
Key resources
Structured warrants homepage · Pricing calculator · Glossary · HSI warrants guide · CBBCs guide
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