What is an IPO – How does it work?

Marc Aucamp

CONTENT WRITER

01 Jun 2026 - 21min Read

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An IPO, or Initial Public Offering, is the process by which a private company goes public, offering its shares to the public for the first time through a stock exchange. This allows the company to raise capital from investors.

IPOs are often closely followed in financial markets because they introduce a new stock that investors and traders could buy and sell.

Going public could provide access to funding that may support expansion, product development, debt reduction, or other business goals. The IPO process generally involves investment banks, regulatory approvals, company valuations, and setting an initial share price before trading begins on a public exchange.

Throughout this article, we’ll explore what IPOs are and how it works. We will also look at the process a company has to go through, as well as some alternatives to IPOs.

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Key takeaways

  • An IPO marks the transition from a private company to a publicly traded business, allowing investors to buy and sell its shares on a stock exchange for the first time.
  • Companies often go public to raise capital that could support expansion, product development, acquisitions, debt reduction, and other long-term growth objectives.
  • Before an IPO launches, companies work closely with underwriters, regulators, and investors to determine valuations, prepare disclosures, and assess market demand.
  • Once trading begins, newly listed shares could experience increased volatility as markets react to investor sentiment, company expectations, and broader economic conditions.
  • While IPOs are one route to public markets, alternatives such as direct listings, Dutch auctions, and reverse takeovers could offer companies different paths to becoming publicly traded.

What is an Initial Public Offering (IPO)?

An Initial Public Offering (IPO) is the process through which a private company offers its shares to the public for the first time on a stock exchange. This marks the transition from a privately owned business to a publicly traded company, allowing traders and investors to buy and sell its shares on the open market.

Before shares begin trading publicly, the company works with investment banks to determine the offering size, valuation, and initial share price. The process also involves regulatory filings, financial disclosures, audits, and investor presentations designed to assess market demand.

Once the IPO is complete and the company is listed on an exchange, its shares become available in the secondary market, where they could be traded freely.

IPO trading refers to buying, selling, or speculating on these newly listed shares after public trading begins. During the early stages of trading, share prices could experience increased volatility and liquidity as the market reacts to investor demand, company performance expectations, and broader market conditions.

Why do companies go public?

Companies choose to go public for several reasons, with raising capital often being the main objective. Through an Initial Public Offering (IPO), businesses could access funding from public investors instead of relying only on loans or private investment.

These funds may be used to support expansion, invest in research and development, acquire other companies, improve working capital, or reduce existing debt. Listing on a stock exchange could also help businesses reach a broader investor base and support long-term growth plans.

Companies often pursue this step of going public when they believe they have reached a level of growth, financial maturity, and operational stability that could support public market requirements.

An IPO could also increase a company’s visibility and credibility. Public companies are required to publish financial reports and meet regulatory standards, which may improve transparency for investors, customers, and business partners.

In some cases, becoming publicly listed could strengthen brand recognition and help companies build trust within their industry. Publicly traded shares may also be used in mergers and acquisitions, giving companies an alternative way to finance future deals.

Another reason companies could go public is to provide liquidity for existing shareholders. Founders, employees, venture capital firms, and early investors may choose to sell part of their holdings once shares begin trading publicly. Public markets create an opportunity for these investors to realise returns on their investments, although lock-up periods may temporarily restrict immediate selling after the IPO.

Public listings may also help companies attract and retain employees through share-based compensation, such as stock options or restricted shares. In addition, a publicly traded company receives a market valuation based on investor demand and financial performance.

How does an IPO work?

Before an Initial Public Offering (IPO), a company operates as a private business owned by a relatively small group of shareholders. These often include founders, employees, venture capital firms, and angel investors. At this stage, shares are not available to the general public and are usually traded privately between a selected group of investors.

Before shares are offered to the public, investment banks typically conduct underwriting and valuation assessments to help determine the initial share price and the number of shares to be issued.

Once the IPO is completed, existing private shares are converted into publicly tradable shares, and the company becomes subject to regulatory reporting and disclosure requirements. This increased transparency could also improve credibility with investors, lenders, and business partners.

An IPO also opens the company to a much larger pool of investors, including institutional and retail participants. Public investors could buy and sell shares on the secondary market after the listing takes place.

The total value of the company’s publicly traded shares contributes to its market capitalisation, while the funds raised through the IPO increase the company’s shareholder equity and overall access to capital.

What IPOs mean for CFD traders?

IPOs could create unique opportunities and risks for CFD traders because newly listed shares often experience increased volatility during their early trading sessions. Large price swings are common as the market reacts to investor demand, company valuations, and broader market sentiment.

In some cases, shares may rise sharply after listing, while others may quickly fall below their opening price. Because CFD trading involves trading on margin with leverage, both returns and losses could be amplified during these volatile periods.

Unlike traditional share investing, CFD trading allows traders to speculate on both rising and falling prices without owning the underlying shares. This means traders may choose to take long positions if they expect prices to rise, or short positions if they believe a newly listed company is overvalued and may decline after the initial market excitement fades.

However, IPO trading could be more challenging due to limited historical price data, making technical and long-term analysis more difficult.

Liquidity could also be an important factor when trading IPO-related CFDs. Newly listed companies may initially have a limited number of publicly available shares, which could contribute to wider spreads and slippage during periods of heavy volatility. Slippage occurs when orders are executed at a different price than expected, particularly during fast-moving market conditions.

Availability of IPO CFDs may also vary by market, with some instruments becoming tradable only after the underlying stock has started trading on the exchange.

Another factor traders might monitor is the IPO lock-up period, which usually prevents company insiders and early investors from selling shares for a set period after the listing. Once this restriction expires, additional shares may enter the market, potentially increasing selling pressure and affecting the stock price.

As a result, traders often pay close attention to lock-up expiry dates and overall market liquidity when assessing newly listed companies.

What is the IPO process?

  • Preparation and underwriter selection: The IPO process usually begins when a company appoints one or more investment banks, known as underwriters, to manage the offering. Underwriters help assess the company’s valuation, determine the type of shares to issue, estimate demand, and guide the business through regulatory and listing requirements.
  • Due diligence and documentation: The company, underwriters, lawyers, accountants, and regulatory specialists conduct detailed reviews of the business, including its financial performance, operations, risks, and legal compliance. During this stage, the company prepares important filing documents, such as the registration statement and prospectus, which provide investors with information about the business and the planned offering.
  • Regulatory review and approval: The registration documents are submitted to the relevant financial regulator, such as the US Securities and Exchange Commission in the United States. Regulators review the filing to ensure the company meets disclosure and legal requirements before the shares can be offered to the public.
  • Marketing and roadshow: Company executives and underwriters promote the IPO to institutional investors through presentations and meetings known as a roadshow. Feedback from investors helps underwriters assess demand and refine the final offering price and the number of shares to be issued.
  • Pricing the IPO: Once investor demand and market conditions are evaluated, the company and underwriters decide on the final IPO price and the number of shares to sell. The goal is to raise capital while attracting sufficient investor interest when trading begins.
  • IPO launch and share allocation: On the IPO date, shares are allocated to investors and officially listed on a stock exchange. The company receives the proceeds from the sale of newly issued shares, while the stock begins trading publicly in the secondary market.
  • Post-IPO activities: After listing, the company becomes subject to ongoing reporting, disclosure, and governance obligations. Underwriters may also temporarily stabilise the share price after trading begins, while some early investors and insiders may face lock-up periods restricting immediate share sales.

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What are the alternatives to IPOs?

For a business to gain access to the public market, an IPO isn’t the only way. There are other options available, such as direct listings, Dutch auction, or reverse takeover.

Direct listings

A direct listing is an alternative way for a private company to go public without using investment banks to underwrite the offering. Instead of issuing new shares to raise capital, existing shareholders sell their shares directly to the public on a stock exchange.

Because no new shares are created, direct listings do not dilute existing ownership stakes and are often less expensive and faster than traditional IPOs.

However, companies take on more responsibility during the listing process and may face greater pricing risk without underwriters supporting the offering. Direct listings are generally more suitable for companies with strong brand recognition and established investor interest.

Dutch auction

A Dutch auction is a type of IPO process where investors submit bids stating how many shares they want to buy and the price they are willing to pay. Instead of setting a fixed IPO price in advance, the final offering price is determined after reviewing investor demand.

Shares are typically allocated to investors who placed the highest bids, with the final price set at the highest level where all available shares could be sold.

This approach can give the market a greater role in determining the IPO price, although demand and pricing could still vary significantly.

Reverse takeover

A reverse takeover, also known as a reverse merger, occurs when a private company becomes publicly traded by acquiring or merging with an existing public company. Instead of going through the traditional IPO process, the private business takes control of the listed company and gains access to the stock market through that entity.

This approach is often considered faster and less expensive than a conventional IPO, although companies must still meet regulatory and reporting requirements after becoming public.

10 biggest IPOs over the years

Company

IPO year

Capital raised in IPO

Sector

Exchange

Alibaba Group Holding

2014

$21.8 billion

Technology

NYSE

Visa

2008

$17.9 billion

Financials

NYSE

Enel SpA

1999

$16.5 billion

Utilities

NYSE

Facebook

2012

$16.0 billion

Technology

Nasdaq

General Motors

2010

$15.8 billion

Consumer discretionary

NYSE

Deutsche Telekom

1997

$13 billion

Communication services

NYSE

Rivian Automotive

2021

$11.9 billion

Consumer discretionary

Nasdaq

AT&T Wireless Group

2000

$10.6 billion

Communication services

NYSE

Kraft Foods

2001

$8.7 billion

Consumer staples

NYSE

Uber Technologies

2019

$8.1 billion

Technology

NYSE

What are the Advantages and Disadvantages of an IPO?

Advantages of an IPO

  • Access to capital: IPOs allow companies to raise capital from public investors, which could be used for expansion, research and development, acquisitions, debt repayment, or general operational needs.
  • Increased visibility and credibility: Listing on a public stock exchange could improve a company’s public profile and increase transparency through regular financial reporting. This may strengthen trust among investors, customers, lenders, and business partners.
  • Liquidity for existing shareholders: Founders, early investors, and employees may gain the opportunity to sell part of their holdings once shares become publicly traded, although lock-up periods may temporarily restrict sales after the IPO.
  • Growth opportunities: Access to public capital markets could help companies pursue long-term growth strategies, including entering new markets, expanding operations, or financing future projects.

Disadvantages of an IPO

  • High costs: Launching and maintaining an IPO could involve significant expenses, including underwriting fees, legal costs, accounting services, regulatory filings, and ongoing compliance requirements.
  • Increased regulatory requirements: Public companies must comply with strict reporting and disclosure rules set by regulators and stock exchanges. This includes publishing quarterly and annual financial reports and keeping shareholders informed about material business developments.
  • Reduced privacy: Once a company becomes publicly traded, financial performance, operational updates, and other business information become publicly available, including to competitors.
  • Loss of control: Founders and early shareholders may lose some decision-making control as ownership becomes distributed among public investors and institutional shareholders.

How to trade IPOs?

When an IPO has occurred, and your broker adds it to the list of tradable shares, you’re able to start trading that share as you would with any other share. Providing you with the ability to go long or short through CFD trading.

If you’re looking for a reliable trading platform that offers CFD trading, then begin your trading journey with Trade Nation today by creating an account or opening a demo account. Our award-winning service offers a wide range of markets and instruments.

* The information provided does not constitute investment advice nor take into account the individual financial circumstances or objectives of any investor. Any information that may be provided relating to past performance is not a reliable indicator of future results or performance.


People also asked

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The IPO process typically takes between 6 and 12 months, although the timeline could vary depending on the company’s size, financial condition, regulatory requirements, and overall complexity of the offering. Well-prepared companies with organised financial records and clear reporting structures may complete the process more efficiently, while businesses facing regulatory concerns or operational challenges could experience delays.

One of the most time-consuming stages is often the financial audit and preparation of regulatory documentation. Companies must organise financial statements, complete due diligence procedures, and prepare registration filings before submitting them to the relevant financial authorities and stock exchanges for review.

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An Initial Public Offering (IPO) is a process that allows a private company to raise capital by offering its shares to the public for the first time on a stock exchange. Often referred to as “going public,” an IPO transforms a privately owned business into a publicly traded company whose shares could be bought and sold by investors and traders in the open market.

Companies typically use IPOs to raise funds that can support expansion, repay debt, invest in operations, or finance future growth plans. Going public could also provide liquidity for founders, employees, and early investors by allowing them to sell some of their existing shares once trading begins.

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The cost of launching an Initial Public Offering (IPO) could vary widely depending on the size of the company, the complexity of the offering, regulatory requirements, and the stock exchange where the business plans to list. Companies going public are typically responsible for a range of expenses, including underwriting fees, legal and accounting services, regulatory filings, exchange listing charges, and marketing costs related to promoting the offering to investors.

In many cases, IPO expenses could range from hundreds of thousands to several million pounds or dollars, particularly for larger or more complex listings. Additional costs may also arise during the preparation process, such as financial audits, compliance reviews, governance restructuring, and investor relations planning.

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The IPO price is typically determined by the investment banks underwriting the offering. The process begins with the company deciding how many shares it plans to sell to public investors. Underwriters then conduct a detailed valuation of the business by reviewing factors such as financial performance, revenue growth, market position, industry trends, and future growth potential.

Investor demand also plays an important role in setting the final IPO price. During the roadshow process, institutional investors provide feedback on how much they may be willing to pay for the shares. Underwriters use this information, together with current market conditions and the company’s capital-raising goals, to determine the final offering price before trading begins.

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