Explaining IPOs

January 18, 2026
8 min read

You could lose all the money you invest in private markets

Private market investments are highly illiquid – there is no guarantee of liquidity, and you may not be able to sell your shares or realise your investment for several years or at all

These investments are high risk and not suitable for most investors

You should only invest if you can afford to lose all your investment

Private market investments should only form a small part (typically no more than 10%) of your investment portfolio

Explaining IPOs

Introduction

Imagine being able to buy shares in a company at the very start of its journey on the stock market. For years, this opportunity was mostly reserved for big institutions and professional investors. Now, thanks to regulated platforms like RetailBook, ordinary investors can take part in Initial Public Offerings (IPOs) and help shape the future of companies they believe in. This page explains how IPOs work and the key risks involved.

What is an IPO?

An IPO, or Initial Public Offering, is when a private company offers its shares to the public for the first time on a stock exchange. This is a major milestone for any business. It means anyone can buy a piece of the company through a regulated platform and become a shareholder. Companies go public to raise money for growth, pay off debt, or gain more visibility. Once listed, their shares can be bought and sold by anyone through exchanges like the London Stock Exchange (LSE) or Nasdaq.

How Does the IPO Process Work?

Launching an IPO is a careful process. The company’s board of directors must approve the plan. Next, the company hires advisers, including investment banks, to guide them. This team helps set the right price for the shares, prepares legal and financial documents, and markets the IPO to investors.

The company then files its Registration Document and Admission Document (also called a Prospectus) with the financial regulator, such as the Financial Conduct Authority (FCA) in the UK. The Prospectus explains what the company does, how it makes money, the risks involved, and how it plans to use the money raised. This step is crucial for transparency and investor protection. Once the FCA approves the documents, the company and its bankers set an initial price range for the shares. They go on a "roadshow" - a series of presentations to investors to build interest and excitement. This helps gauge demand and narrow the price range.

Based on investor interest, the company and its bankers decide on the IPO price - the price at which the shares will be sold to the public. Judging the right price is a crucial but difficult step, balancing how much money the company raises and how the stock performs on day one.

On the day of the IPO, the company’s shares are listed on a stock exchange, and anyone can now buy or sell the shares. The stock price will rise or fall based on the company’s financial performance, sector news, and market trends. The company must follow strict rules designed to protect investors, including regular financial reporting, transparency with shareholders, and accountability to the public.

Why Do Companies Go Public?

Going public means more rules and greater transparency, but there are several attractions for a private company:

  • Access to Capital: Public companies can raise money by selling new shares to investors, which can be used to fund expansion, research, or reduce debt.
  • Increased Visibility and Credibility: Being listed on a stock exchange makes a company more recognisable to customers, partners, and the media.
  • Improved Liquidity for Existing Investors: Early investors and employees can sell their shares more easily, turning their investment into cash.
  • Market Valuation: The company’s value is determined by the market, offering real-time feedback on performance and investor confidence.
  • Use of Shares as Acquisition Currency: Public shares can be used as a form of payment when acquiring other businesses.
  • Attracting Talent: Public companies can offer stock options, which can help attract and retain employees.

Why Participate in an IPO?

For investors, IPOs offer a chance to invest in a company at the start of its public journey - potentially before it grows bigger and more valuable. IPOs can help spread risk across different stocks and industries, lowering the volatility of your portfolio. Shares that trade on a recognised exchange can be readily bought and sold, offering greater liquidity. If the company performs well, early investors could see stronger returns. Shareholders are able to exercise voting rights on issues such as executive pay or strategic direction. Public companies must share detailed financials and business plans, which help investors make informed decisions.

The Risks of Investing in an IPO

IPOs can be exciting, but they come with risks:

  • Price Volatility: IPO stocks can show significant price swings, especially in the first few days or weeks of trading.
  • Limited Track Record: Many companies that IPO are young and fast-growing but have limited financial history, making it harder to judge their potential.
  • Motivated Sellers: Understanding why existing shareholders are selling is important in determining the value of an IPO.
  • Poor Performance: Individual stocks can deliver negative returns, which means you may face a loss of capital.
  • Lock-Up Periods: Insiders typically cannot sell their shares for a few months after the IPO, but their selling can cause the stock to fall in value.
  • Lack of Information: While IPO filings provide significant disclosures, they may not give the full picture and there remains a high degree of uncertainty as to the company’s success.

How RetailBook Makes IPOs Accessible

RetailBook is a platform designed to make primary capital markets accessible to retail investors on the same terms as institutions. RetailBook partners with issuers, syndicate banks, and brokers to aggregate retail demand efficiently. This ensures retail investors can participate in transactions that were historically limited to institutions.

RetailBook provides tools so that investors subscribe via their existing brokers or investment platforms. RetailBook does not provide investment advice. Access to any IPO is subject to eligibility, the issuing company, and intermediary requirements.

Next Steps

IPOs are a way for companies to raise money and for investors to get in at the ground floor. They offer the potential for growth, liquidity, and influence, but also come with risks like volatility and uncertainty. RetailBook allows everyday investors to take part in these opportunities, making the process simpler and more transparent.

If you’re thinking about investing in an IPO, take time to read the prospectus, understand the risks, and consider how the investment fits with your goals. Thanks to platforms like RetailBook, you now have the chance to invest alongside institutions and help shape the future of companies you believe in.

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Disclaimer: This educational content is for informational purposes only and does not constitute financial advice. Investment decisions should be based on your own research. Past performance is not indicative of future results. Capital is at risk. FCA regulations apply.