Why this matters in Saudi Arabia
The most common misunderstanding about a Saudi IPO is who sets the price. People assume the regulator does. It does not. The price is set by institutional book-building, governed by the CMA's Instructions for Book Building — a market process with precise rules. Understanding it explains how the headline number on every Saudi IPO actually comes to be.
The book-building period
After the CMA approves the prospectus, the financial advisor opens the book-building period. It cannot exceed 14 calendar days. During this window, the advisor — with the underwriters — sets a price range, conducts investor engagement, builds the book of demand, and sets the final price. The CMA does not participate in pricing; its role is disclosure and investor protection.
Participating institutions submit their bids — how many shares, at what price — within the range. From the aggregate of those bids, the demand curve emerges, and the final offer price is set at the level that clears the book against the offering's requirements.
The price range rules
The CMA's instructions put precise limits on the range. The spread between the floor and the ceiling cannot exceed 20% of the minimum price. Participating institutions may bid outside the range — up to a further 20% above the top or below the bottom — which lets genuine demand reveal itself even beyond the stated band. The financial advisor may change the price range only once, and only with the approval of the underwriter and the issuer. Recent Saudi IPOs illustrate the pattern: price ranges are announced as a tight band, and the institutional book sets the final number within or around it.
One rule anchors the whole process: the entire offering must be covered by participating institutions. The book has to be full before the price is set.
The two tranches and the clawback
A Saudi offering is typically split into two tranches.
Tranche A — Participating Parties comprises the institutions eligible to participate in book-building: investment funds, qualified foreign investors, GCC corporate investors, and certain others, with a portion reserved for public funds. These institutions are usually allocated the full offering provisionally.
Tranche B — Individual Subscribers comprises Saudi natural persons, residents of the Kingdom, and GCC nationals, who subscribe after the price is set. Here the clawback operates: if there is sufficient retail demand, the financial advisor — in coordination with the company — can reduce the institutional allocation, commonly down to 90%, to make room for individuals. That leaves around 10% for the retail tranche, though the exact split is set in the prospectus.
One protection for retail investors sits inside the mechanics: the price individuals pay cannot exceed the price at which the offering was fully covered by participating institutions. Retail does not pay more than the book cleared at.
After the individual subscription period closes, the final allocation is made, the shares are deposited, and the company lists on the Saudi Exchange. The price discovered in the book becomes the price the market opens on.
