What Happens on the Day of an IPO?

Initial public offering is one of the most watched events in the stock market because it marks the moment a private company becomes available to public investors. But IPO day is not as simple as a company ringing the opening bell and shares instantly trading at the headline price. Pricing, allocation, exchange procedures, first trades, liquidity and volatility can all shape what traders actually see on their platform.

This guide explains What Happens on the Day of an IPO, how IPO trading day works, and why the IPO opening price can differ from the offer price.

Key Takeaways

• An IPO day is when a company’s shares move from private ownership to public market trading.
• The IPO offer price is usually set before public trading begins, but the opening market price can be higher or lower.
• High-profile IPOs such as SpaceX show why retail demand, media attention, and valuation expectations can shape first-day trading.
• IPO shares do not always start trading exactly at the regular market open because exchanges often run a price discovery process first.
• First-day IPO trading can be volatile due to limited trading history, strong demand, changing liquidity, and short-term sentiment.
• Traders should understand the difference between buying IPO shares directly and trading price movements through CFDs where available.

What Is an IPO and Why Does IPO Day Matter?

An IPO, or initial public offering, is the first time a private company sells shares to the public on a stock exchange. It turns a privately held business into a publicly traded company, meaning its shares can be bought and sold by market participants after listing.

Before an IPO, ownership is usually limited to founders, employees, early investors, venture capital firms, private funds or strategic backers. After the IPO, the company has a market price that changes throughout the trading day as buyers and sellers respond to demand, news, valuation and wider market conditions.

Companies may go public for several reasons. They may want to raise capital, repay debt, fund expansion, improve public visibility, reward early investors or create a liquid market for their shares. An IPO can also give a company a more visible valuation, which may help with acquisitions, employee stock plans or future capital raising.

For traders, IPO day matters because it can create fast-moving price action. A newly listed company has no public trading history, so the market is trying to decide what the company is worth in real time. This is why IPO trading day often attracts attention from investors, short-term traders, analysts and the financial media.

The SpaceX IPO is a useful topical example. SpaceX is already a well-known private company, so market interest can build before the stock starts trading. This helps explain why high-profile IPOs can attract strong attention even before traders know the first public trading price.

Find more about How to Buy SpaceX Stock Before IPO

What Happens Before the IPO Starts Trading?

Before the IPO starts trading, the company, underwriters, exchange and investors complete several steps that prepare the stock for public market trading. Most of this happens before ordinary traders can buy or trade shares on the open market.

The process usually begins well before listing day. The company prepares regulatory documents, explains its business model, discloses financial information and sets out key risks. Investment banks or underwriters then help assess demand from investors, build the order book and guide the final IPO price.

By the time IPO day arrives, several important steps may already have happened:

• The company has completed key regulatory and exchange requirements.
• Underwriters have assessed investor demand.
• The final IPO offer price has been set.
• Shares have been allocated to eligible investors.
• The stock has been prepared for exchange trading.
• The exchange has begun or prepared its opening price discovery process.

This is why IPO day is only the public-facing part of a much longer process. By the time the stock appears on a platform, the offer price and share allocation may already be decided.

IPO pricing and allocation

IPO pricing and allocation happen before public trading begins. The IPO offer price is the price at which selected investors receive shares before the stock begins trading on the exchange.

This is part of the primary market. In the primary market, the company sells new or existing shares through the IPO process. Eligible institutional investors, and sometimes selected retail investors, may receive an allocation before the first public trade.

Most ordinary traders interact with the IPO only after it reaches the secondary market. The secondary market is where listed shares trade between buyers and sellers after the IPO has launched. At that point, the price is no longer fixed by the IPO offer. It is driven by supply, demand, liquidity and sentiment.

In a high-profile IPO such as SpaceX, retail allocation can become part of the market story. If public interest is strong, many traders may want exposure before the stock begins trwhat-happens-on-ipo-dayading. However, demand does not guarantee allocation, and allocation does not guarantee profit.

Why can't most traders always buy at the IPO price

Most traders cannot always buy at the IPO price because the IPO offer price is usually available only to investors who receive an allocation before public trading starts. If you are not allocated shares, you may only be able to buy or trade the stock once it appears in the secondary market.

This is a key point for beginners. A news headline may say a company priced its IPO at $50 per share, but that does not mean every trader can buy at $50. If demand is strong, the stock may open above the IPO price. If demand is weak, it may open below it or fall soon after trading begins.

For example, if a company prices its IPO at $50 but opens at $68, a trader buying after the first public trade is not entering at the IPO offer price. They are entering at the market price. That difference can have a major impact on risk and potential return.

What Happens When the IPO Opens on the Exchange?

When the IPO opens on the exchange, buy and sell interest is matched through a price discovery process before the first public trade is confirmed. The goal is to establish an orderly opening price that reflects available supply and demand.

A newly listed stock does not always begin trading exactly when the market opens. The exchange may collect orders, monitor demand, review price indications and coordinate with the relevant parties before releasing the stock for trading. This is different from a stock that has already been trading for years and simply resumes trading at the regular market open.

Once the opening process is complete, the first public trade takes place. From that point, the stock begins trading like other listed shares, with prices moving as market participants buy and sell.

For traders watching an IPO, this period can feel uncertain. A stock may appear on a watchlist before live trading begins, but orders may not be executable until the exchange opens the security for trading. This is why it is important to check platform messages, exchange updates and live market availability rather than assuming the IPO starts at a fixed time.

The role of price discovery

Price discovery is the process of finding a market price based on real buy and sell interest. On IPO day, this process is especially important because there is no previous public closing price to use as a reference.

In simple terms, the exchange looks at demand from buyers and supply from sellers. If many buyers want shares and few sellers are available, the opening price may be higher than the IPO offer price. If demand is weaker, the opening price may be closer to the offer price or lower.

Price discovery helps create the first public trading price. It does not guarantee that the price is “fair” or stable. It simply reflects market conditions at the moment trading begins.

After the first trade, the stock can still move sharply. Some investors may take profits, others may buy because they missed allocation, and short-term traders may react to momentum. This is why the first trade is only the start of IPO day price action, not the final verdict on the company’s value.

IPO Price vs Opening Price: What Is the Difference?

The IPO price is the offer price set before public trading begins, while the opening price is the first price at which the stock trades on the exchange. These two prices are often different.

This distinction is one of the most important parts of understanding what happens on the day of an IPO. Many beginners assume the IPO price is the price they will see when the stock starts trading. In reality, the market may reprice the stock immediately once public trading begins.

The IPO offer price is usually determined after underwriters assess investor demand. The opening price is created by market supply and demand during the exchange opening process. The intraday price then moves as trading continues, and the closing price shows where the stock ends its first public session.

What Time Do IPOs Start Trading?

IPOs do not always start trading at the exact moment the regular market opens. The start time depends on the exchange, the IPO process, order flow, broker access, market conditions and the level of demand.

For example, a US-listed IPO may price the night before and begin public trading during the next session. However, the stock may not start trading at the opening bell. The exchange may first complete price discovery, review order imbalances and establish an orderly opening price.

The safest approach is to check the exchange announcement, the company’s investor relations materials, your broker platform and any official IPO calendar available to you. Avoid relying only on social media or informal market chatter.

Even if you know the expected IPO date, the exact first trade may still depend on the exchange process. Patience is important. Trying to rush into an IPO without live pricing, spread information or order confirmation can increase execution risk.

Why IPO Prices Can Be Volatile on the First Day

IPO prices can be volatile on the first day because the market is still trying to decide the company’s fair value. Unlike established stocks, newly listed companies have no long public trading record for traders to study.

Several factors can drive IPO day volatility:

• Strong or weak demand from traders
• Limited shares available for public trading
• Media attention and market hype
• Large institutional orders
• Valuation uncertainty
• Sector sentiment
• Wider market conditions
• Short-term profit-taking

A company may open sharply higher if demand is strong, but that does not mean the move will continue. Early buyers may make profits, allocated investors may sell, or traders may decide that the opening price is too expensive. The reverse can also happen: a weak open may stabilise later if long-term investors step in.

Liquidity and spreads

Liquidity refers to how easily a stock can be bought or sold without causing a large price movement. On IPO day, liquidity can change quickly because the stock is new, demand may be uneven, and some holders may not be ready to sell.

Spreads can also widen. The spread is the difference between the buy price and sell price. Wider spreads increase trading costs and can make it harder to enter or exit near the price you expect.

This matters even more during fast-moving IPO sessions. If you use a market order during a volatile period, your execution price may be different from the price you saw a moment earlier. Limit orders can help control the maximum price you are willing to pay or the minimum price you are willing to accept, although they do not guarantee execution.

How Traders Can Approach an IPO After It Lists

Traders can approach an IPO after it lists by waiting for public trading to begin, checking platform availability, reviewing volatility and using a clear risk plan. The goal is not to predict every move, but to avoid entering blindly.

The first step is to understand what kind of exposure you want. Some investors want to buy and hold shares. Some short-term traders want to trade volatility. Others may prefer to observe the first few sessions before making any decision.

You should also check whether the stock is available on your platform. Not every newly listed share is immediately available for every trading product. Availability may depend on the exchange, liquidity, broker access, regulation and product type.

Buying or investing in shares

Buying shares means taking ownership of the stock, where available. If the share price rises after you buy, the value of your position increases. If the share price falls, the value of your position decreases.

This approach may suit investors who have researched the company and are comfortable holding through volatility. However, buying on IPO day still carries risk because the market may be highly emotional and the opening price may already include strong growth expectations.

Before buying shares, traders should review the company’s prospectus or official filing, understand the business model, consider valuation and decide whether the entry price fits their plan.

Trading IPO price movements with CFDs

CFDs allow traders to speculate on price movements without owning the underlying shares, where the product is available. This means you may be able to trade rising or falling prices, depending on the platform and market conditions.

However, CFDs involve leverage and margin. Leverage can magnify gains, but it can also magnify losses. A small move in the underlying stock can have a larger impact on your account compared with an unleveraged share position.

IPO CFDs can be especially risky because newly listed shares may be volatile, spreads may be wider and liquidity may change quickly. Traders should understand margin requirements, overnight costs, stop-loss behaviour and execution risk before opening a position.

How to Start Trading CFDs on Markets.com

Starting CFD trading on Markets.com involves a few simple steps:

Step 1: Open and verify your account

Visit the Markets.com website or download the mobile app. Click Create Account, enter your personal details, and complete the required KYC verification by uploading proof of identity and proof of address.

Step 2: Fund your trading account

Once your account is approved, choose a suitable account type and deposit funds using an available payment method such as a card, bank transfer or e-wallet. The minimum deposit is $100.

Step 3: Choose a market and place your trade

Open the trading platform, select an asset such as gold, forex, indices or shares, and analyse the chart. Choose Buy/Long if you expect the price to rise, or Sell/Short if you expect it to fall. Before confirming the trade, consider using stop-loss and take-profit orders to manage risk.

Conclusion

What Happens on the Day of an IPO is a structured process involving pricing, allocation, exchange price discovery and public trading. The IPO offer price is not always the price available to ordinary traders once the stock opens, and the IPO opening price can move quickly as demand changes. High-profile listings such as SpaceX show why IPO trading day can attract strong attention, but also why traders need to watch volatility, liquidity, valuation and leverage risk.

FAQs

What happens on the day of an IPO?

On the day of an IPO, shares move from private allocation to public market trading. The offer price is already set, allocated investors receive shares, the exchange runs its opening process, and the stock begins trading once price discovery is complete.

Is the IPO price the same as the opening price?

No. The IPO price is the offer price set before public trading begins. The opening price is the first public trading price on the exchange and may be higher or lower depending on demand, allocation, sentiment and market conditions.

Why is SpaceX IPO important for IPO traders?

The SpaceX IPO is important because it shows how a high-profile company can attract intense retail and institutional demand before trading begins. It also highlights why IPO day prices can be shaped by hype, valuation expectations, liquidity and price discovery.

Can I buy an IPO stock before it starts trading?

Most retail traders cannot buy at the IPO offer price unless they have access to an allocation through an eligible broker or platform. Many traders can only access the stock after it starts trading publicly on the secondary market.

Why does an IPO not start trading when the market opens?

An IPO may not start trading immediately because the exchange needs to establish an orderly opening price. This can involve order collection, price indications, auction procedures and checks for supply, demand and volatility.

Are IPOs risky to trade on the first day?

Yes. IPOs can be risky on the first day because prices may move quickly, spreads can widen, liquidity may change and valuation is often uncertain. CFD traders should also consider leverage and margin risk.