What Is an IPO? How Companies Go Public, and Who Gets the Good Price

An initial public offering is the first time a company's shares are sold to the public and admitted to trading on an exchange.

The process is well documented. What is less discussed, and matters far more to an ordinary buyer, is who sells, who buys first, and at what price — because those determine whether the widely quoted IPO returns were ever available to you.

Why a company goes public

To raise capital for expansion, debt repayment or acquisitions.

To give early investors an exit. Venture funds and founders hold illiquid stakes. A listing creates a market in which they can eventually sell.

For currency and credibility. Listed shares can be used to pay for acquisitions and to compensate staff, and a listing carries reputational weight with customers and lenders.

The second reason deserves emphasis, because it introduces the central tension: an IPO is partly a mechanism for existing owners to sell. That does not make it a bad investment, but it does mean the people who know the business best are reducing their stake, and the price was set by them and their advisers.

The process

1. Underwriters are appointed. Investment banks manage the offering, advise on price, and commit to selling the shares.

2. A registration document is filed. In the US this is the S-1, filed with the SEC and public on EDGAR. Elsewhere it is a prospectus. It contains audited financials, risk factors, ownership, use of proceeds and management details.

This document is the single most useful thing available to you, and it is free. The risk factors section in particular is written by lawyers protecting the company, which makes it unusually candid about what could go wrong.

3. The roadshow. Management presents to institutional investors, who indicate what they would buy and at what price.

4. Pricing. The bank sets the final offer price based on that demand.

5. Allocation. Shares are distributed, overwhelmingly to institutions.

6. Trading opens. Now anyone can buy — at whatever the market decides, which is often well above the offer price.

The step that matters to you

Steps 5 and 6 are where retail buyers and institutions part company.

If a company prices at 20 and opens at 28, the headlines report a 40% first-day gain. That gain went to whoever was allocated shares at 20, which was almost entirely institutions.

A retail buyer who bought when trading opened paid 28. The 40% was never available to them; from their entry point, the stock is flat.

Why underwriters price below expected value: it guarantees the offering sells, and it rewards the institutional clients they need for future deals. A large first-day pop is not evidence the company is cheap — it means the offer was priced conservatively, and the difference was transferred from the selling company to allocated buyers.

The lock-up

Insiders, founders and early investors are contractually barred from selling for a period after listing — commonly 90 to 180 days.

Without it, everyone with cheap shares could sell immediately and collapse the price.

The consequence is a known future event: on lock-up expiry, a large block of shares becomes sellable at once. Historically, share prices have tended to be weak around these dates as supply arrives. The expiry date is disclosed in the prospectus, so it is knowable in advance.

What to read in the prospectus

If you look at nothing else:

• Use of proceeds. Is the money funding the business, or paying out existing holders?
• Primary versus secondary split. New shares issued, or existing ones sold?
• Risk factors. Unusually honest by legal necessity.
• Financial history. Is the company profitable? If not, what is the path?
• Lock-up terms and expiry date.
• Share class structure. Dual-class shares can leave founders with voting control disproportionate to their economic stake.
• Customer concentration. A large share of revenue from few customers is fragility.

Why IPOs are difficult to assess

No trading history. There is no price record and no way to see how the shares behave under stress.

Information asymmetry at its widest. The sellers know the business intimately. You have a document they drafted.

Deliberate timing. Companies list when conditions are favourable and their own numbers look strongest. That is rational and it is not in your favour.

Media attention peaks at the worst moment. Coverage is heaviest on the first day, which is when the price is most influenced by enthusiasm rather than analysis.

A more patient approach

Nothing forces you to buy on day one. Waiting has specific advantages:

• Several quarters of results as a public company, with the disclosure that requires
• Price behaviour through at least one period of market stress
• The lock-up expiry passed, so the supply overhang is resolved
• Analyst coverage established beyond the underwriting banks

The cost of waiting is missing gains. The benefit is making a decision with information rather than with a prospectus and a narrative.

The bottom line

An IPO is a sale, and like any sale it is arranged by the seller on terms that suit the seller. That is not a criticism — it is simply what it is, and it is worth holding in mind against the excitement.

The specific thing to remember: the headline first-day return usually went to institutions allocated at the offer price. If you are buying once trading opens, you are buying from them.

This article is educational and is not financial advice. The value of investments can fall as well as rise, and newly listed shares can be particularly volatile.