What is the primary market?

Every time a company floats on the stock market, something important happens that most private investors never think much about. New shares are created, money changes hands, and a business that was previously owned by a small group of founders or backers becomes, at least in part, owned by the public. The mechanism that makes this possible is called the primary market, and understanding how it works is one of the foundations of knowing how stock markets actually function.

The primary market is where securities are created and sold for the very first time. When a company decides it wants to raise money by issuing shares, it does so through the primary market. The company, or sometimes a government issuing bonds, sells directly to investors. The proceeds of that sale go to the issuer. This is the key distinction. In the primary market, the company itself receives the money.

The most well-known version of this is an initial public offering, or IPO. This is when a private company lists on a stock exchange for the first time, making its shares available to outside investors. The company works with investment banks and stockbrokers to price the shares, decide how many to issue, and market them to potential buyers. Once those shares are sold and the company has its money, the primary market transaction is complete. From that point on, those shares trade between investors on the secondary market, which is what most people mean when they talk about the stock market in everyday conversation.

An IPO is not the only way companies use the primary market. A business that is already listed can return to the primary market to raise additional capital through a rights issue or a placing. In a rights issue, existing shareholders are offered the chance to buy new shares at a discounted price, typically in proportion to what they already hold. The logic is that existing investors should have first refusal before new money comes in. A placing is different: the company issues new shares and sells them directly to a selected group of institutional investors, usually large funds, without offering them to ordinary shareholders first. Both of these raise new money for the company and both involve the primary market.

Governments use the primary market too. When the UK government issues gilts, which are bonds that pay a fixed rate of interest over a set period, it is accessing the primary market to borrow money directly from investors. The Debt Management Office, which handles the government’s borrowing on behalf of HM Treasury, regularly runs gilt auctions where institutions bid to buy newly issued debt. The same principle applies: the government receives the money, the investor receives the gilt, and that gilt can then be traded on secondary markets.

For private investors in the UK, the most practical encounter with the primary market tends to come through IPOs or through rights issues on shares they already hold. When a company floats on the London Stock Exchange or AIM, it typically opens a period during which retail investors can apply for shares at the offer price. This can be done through a stockbroker or, increasingly, through investment platforms that participate in IPO allocations. The catch is that popular IPOs are often oversubscribed, meaning more people want shares than are available, so allocations are scaled back or decided by ballot.

The offer price in an IPO is set by the company and its advisers before the shares start trading. Once trading begins, the market takes over and the price can move significantly from where it started. Some IPOs open strongly above the offer price, delivering an immediate gain to anyone who got an allocation. Others open below the offer price, meaning investors who applied for shares are immediately sitting on a loss. The pricing of an IPO is an imprecise art, and the interests of the company raising money, which wants the highest possible price, do not always align with the interests of investors, who naturally prefer a lower price that leaves room for gains.

Rights issues require a different kind of attention. If you hold shares in a company that announces a rights issue, you will receive a document telling you how many new shares you are entitled to buy and at what price. You have several options: take up the rights and buy the new shares, sell the rights to someone else through the market if they have a tradeable value, or do nothing and let the rights lapse. Letting rights lapse is rarely the best outcome because you are effectively allowing other investors to acquire shares in the company you already own, which dilutes your stake. It is worth paying attention to rights issue announcements rather than filing them away.

The primary market also plays an important role in the broader economy. When companies raise capital through share issues, they use those funds to invest in growth: building facilities, hiring people, developing new products, paying down debt. The health of the primary market is therefore a reasonable indicator of business confidence and economic activity. A busy period of IPOs and rights issues generally reflects an environment where companies believe they can grow and investors are willing to back them.

It is worth keeping the distinction between primary and secondary markets clear in your mind because it affects how you think about what happens when you buy and sell shares. When you purchase existing shares through a broker, the money goes to the person who sold them to you, not to the company. The company only received money when those shares were first issued. If you want your investment to directly fund a company’s operations, you need to participate in a new issue on the primary market. Most of the time, ordinary investors are participating in the secondary market, trading shares with other investors rather than channelling money directly to businesses.

TL;DR — the short version

• The primary market is where new securities are created and sold for the first time, with proceeds going directly to the issuing company or government.
• An IPO is the most common primary market event for ordinary investors, allowing them to buy shares before or at the point a company first lists.
• Companies already listed can also use the primary market via rights issues (offering new shares to existing holders) or placings (selling to institutions).
• Once shares have been issued, they trade on the secondary market, where buyers and sellers exchange with each other rather than with the company.
• Rights issue letters are worth reading carefully: letting rights lapse dilutes your existing holding.
• The volume of primary market activity is a useful indicator of business confidence and broader economic conditions.

Investment values can go down as well as up. This post is for informational purposes only and does not constitute financial advice. Always do your own research.

This article is for informational purposes only and does not constitute financial advice. Investment values can go down as well as up. Always do your own research before making any financial decisions.