Hong Kong IPO Pricing: Bookbuild, Public Offer and Stabilisation

Hong Kong IPO pricing follows a hybrid bookbuilding model that differs from the US in one critical respect: mandatory retail participation. The offering is split into an International Placing (typically 90% of the deal) and a Hong Kong Public Offer (typically 10%). The clawback mechanism provides that if the retail tranche is heavily oversubscribed, the allocation shifts — up to 50% of the deal can be allocated to retail investors in cases of extreme oversubscription (over 100x). The pricing process itself uses a price range (indicative price range) rather than a fixed price, with institutional investors placing orders at specific prices within the range. The final price is determined by the issuer and sponsors after the book closes, typically at a point within the indicative range that maximises proceeds while leaving sufficient aftermarket demand for a stable first trading day. Stabilisation in the first 30 days of trading — where the stabilising manager can buy shares to support the price if it falls below the offer price — is funded by the greenshoe option, allowing the stabilising manager to sell up to 15% more shares than the base deal size.