From pricing to the first trade
Between pricing and the first trade there are usually a few business days. In that window the banks confirm allocations to investors, retail subscriptions are finalised, and the shares are delivered against payment. In Gulf offerings with a retail tranche, receiving banks also process refunds of excess subscription money to investors whose orders were scaled back. The exchange then grants unconditional admission once it has confirmation that the free float and shareholder spread requirements are met.
- Pricing announcement with the final offer price and size.
- Allocation notices to institutional investors; allotment results for the retail tranche.
- Settlement: delivery of shares to investors' accounts and payment to the issuer and selling shareholders, net of fees.
- Refunds of excess retail subscriptions where applicable.
- Unconditional admission to listing and trading by the regulator and exchange.
- First day of trading.
Timing is set out in the prospectus and in the exchange's procedures. For a recent reference, The National reported that DIP Holding's shares were expected to start trading on DFM around 11 November 2026 after its offering closed. On AIM, the issuer must publish a draft Schedule One announcement at least 10 business days before admission, or 3 business days for an express applicant, under the AIM Rules for Companies.
The first day of trading
Trading opens with an auction or opening session in which the first price is discovered from buy and sell orders. This price can differ from the offer price in either direction. A first-day rise is often reported as success, but for the issuer it can also mean money left on the table. A fall below the offer price damages confidence among the investors who just bought. The goal of careful pricing and allocation in the bookbuilding stage is a first day that is orderly rather than spectacular.
Exchanges apply their usual trading rules from the first session, including price limits or volatility controls where the market has them. Management should know in advance which rules apply, so that it is not surprised by a trading pause or an auction extension.
Stabilisation and the greenshoe
Many IPOs include a stabilisation mechanism managed by one of the banks, the stabilising manager. It works as follows. At allocation, the banks allot more shares than the base offer, an over-allotment, usually by borrowing the extra shares from a major shareholder. If the share price falls below the offer price after listing, the stabilising manager buys shares in the market to support the price and uses them to return the borrowed shares. If the price holds or rises, the bank instead exercises the greenshoe option: the right to buy the extra shares from the issuer or the selling shareholder at the offer price.
| Scenario after listing | Stabilising manager's action | Effect |
|---|---|---|
| Price below the offer price | Buys shares in the market | Supports the price; the greenshoe is exercised in part or not at all |
| Price at or above the offer price | Exercises the greenshoe option | Additional shares are sold at the offer price; the deal size increases |
The size of the over-allotment, the period during which stabilisation may take place and the identity of the stabilising manager are disclosed in the prospectus. Stabilisation is legal only within the conditions set by market abuse and stabilisation rules in each jurisdiction, and the bank reports stabilisation trades as those rules require. Not every market or every offering uses it, so the mechanism should be confirmed with counsel and the exchange early in the process.
Communications on the day
From the moment of listing the company is subject to continuous disclosure rules. Everything said in public has to be consistent with the prospectus and must not create a false market. The day usually includes a bell ceremony at the exchange, a short statement from the chairman or chief executive, and media interviews. These messages are prepared in advance and checked by counsel. Management should avoid comments on the share price, forecasts not contained in the prospectus, or any new material information that has not been announced through the exchange.
What the issuer does that week
- Confirms with the registrar or central depository that the shareholder register is correct.
- Checks receipt of proceeds and the deduction of underwriting fees and expenses.
- Activates its disclosure procedures and the insider list.
- Launches the investor relations section of its website with the prospectus, results and contacts for investors.
- Briefs employees on dealing restrictions and confidentiality.
- Confirms lock-up arrangements with the banks and the registrar.