The
Guide for Beginners: How is the CBBC price determined? has briefly explained that the premium of a CBBC is an indicator used to compare the prices of CBBCs with similar terms. In fact, the real meaning of premium is that, based on the CBBC price at this time, how much does the price of the underlying assets need to increase or decrease to enable you to break even if you purchase the product at this time and hold it till maturity. Since CBBCs have an intrinsic value, the premium is generally only a few percentage points to reflect the financial borrowing costs and hedging costs during the period.
Some investors may find that there is a negative premium for some CBBCs. Does it mean that an investor can purchase the product at a discounted price now and earn the amount of discount at maturity even if there is no movement in the underlying asset? In fact, this is just an innocent misunderstanding which stems from the fact that the underlying asset will be ex-dividend.
As mentioned above, the issuer has already taken into account the dividend in the CBBC’s price, but the stock may still not be ex-dividend at that time. Since the spot price of the underlying asset is used when the ticker is calculating the product's premium, certain bulls may have a negative premium, while certain bears may have a higher positive premium. This creates the illusion that "a bull is worth buying while a bear is not worth buying". However, once the stocks have been subject to an ex-dividend event and the stock price of the underlying asset adjusted downwards, the premium of the CBBC will return to normal, so in practice, investors will not get extra profits by buying a CBBC with a negative premium.