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Home›The Economy›How Money Works›Market Fundamentals

What Is an IPO?

Erajah Scypion
Erajah ScypionFounder, Scypion Finance
1 source4 min readUpdated June 14, 2026
◆ Key Takeaways
  • IPO (Initial Public Offering) is when a private company issues stock to the public and begins trading on a stock exchange
  • Private companies IPO to raise capital for growth, acquisitions, or to give early investors exit liquidity
  • Pre-IPO shares trade on secondary markets; post-IPO shares trade on exchanges (NYSE, NASDAQ)
  • IPO first-day returns are often large (20-50% gains), but long-term performance is often disappointing (underperforms market)
  • Lock-up period (typically 180 days) prevents insiders from selling immediately; expiration often triggers stock price declines
On this page
  • Why Companies Go Public
  • The IPO Process
  • IPO Allocation
  • First-Day Returns
  • Lock-Up Period
  • Long-Term IPO Performance
  • IPO Performance Drivers
  • IPO vs. SPAC
  • Hot IPO Markets
  • Red Flags for IPOs
  • Investment Strategy for IPOs
  • The Bottom Line

An IPO (Initial Public Offering) is when a private company offers shares to the public for the first time, listing on a stock exchange and becoming a publicly traded company.

Why Companies Go Public

Raise capital: Issue new shares, use proceeds for expansion, R&D, acquisitions

Liquidity for founders/investors: Early investors can finally sell shares (no longer illiquid)

Currency for acquisitions: Use stock to buy other companies

Employee compensation: Issue employee stock options

Prestige: Being public signals success and maturity

Regulatory requirements: Some regulatory roles require being public

The IPO Process

1. Preparation (months):

  • Hire investment banks (Goldman, JP Morgan, etc.)
  • Clean up financials
  • File registration statement with SEC
  • SEC reviews disclosure documents

2. Roadshow (weeks):

  • Management meets with institutional investors
  • Gauges demand for shares
  • Investment banks set price range

3. Pricing (day before launch):

  • Investment banks set exact IPO price
  • Usually near high end of price range if demand is strong

4. Trading day:

  • Shares begin trading on exchange
  • First-day price often differs dramatically from IPO price

IPO Allocation

Investment banks allocate IPO shares primarily to institutional investors (mutual funds, pension funds), not individual retail investors.

Why? Institutions buy larger quantities and have long relationships with banks.

Result: Retail investors often buy on the first day of trading at inflated prices after institutions have already taken shares.

First-Day Returns

IPO first-day returns are often spectacular:

Examples:

  • Facebook (2012): IPO $38, opened $42, closed $38.23 (modest)
  • Alibaba (2014): IPO $68, closed $93 (+37%)
  • Snapchat (2017): IPO $17, closed $24.48 (+44%)
  • Airbnb (2020): IPO $68, closed $146.01 (+114%)
  • Twitter (2013): IPO $26, closed $44.90 (+73%)

Large first-day pops suggest the IPO was underpriced or institutional investors are optimistic.

Lock-Up Period

Insiders (founders, employees) cannot sell shares for 180 days (typical) after IPO.

Reason: Prevent massive selling that would crash the stock

Effect: After lock-up expiration, insiders often sell

Stock impact: Many stocks decline 10-30% when lock-up expires because insider selling floods the market

Long-Term IPO Performance

Unlike first-day returns, long-term IPO performance is often disappointing:

Research finding: IPOs underperform the market average by 5-10% annually over 5+ years.

Why?

  • IPOs are often expensive (high valuation)
  • Founders/early investors sell (lock-up expiration)
  • Reality doesn't match hype
  • Regression to mean (exceptional growth rarely persists)

Historical examples:

  • Facebook IPO (2012): Stock crashed 50% in months, eventually recovered
  • Twitter IPO (2013): Underperformed S&P 500 for years
  • Snapchat IPO (2017): Lost 40%+ over 3 years, eventually recovered
  • Lyft IPO (2019): Crashed from $72 to $20, never recovered

IPO Performance Drivers

Successful IPOs: Company executes, grows revenue/earnings

  • Example: Amazon IPO (1997): Crashed 75% by 2000, but recovered and became $2 trillion company

Failed IPOs: Company fails to execute

  • Example: Pets.com (1999): Went public, collapsed, went bankrupt
  • Example: WeWork IPO attempt (2019): Valuations collapsed, never went public

IPO vs. SPAC

IPO: Company goes public directly, subject to SEC scrutiny

SPAC: Company merges with a shell company (SPAC) to go public faster

  • Bypass some SEC requirements
  • Faster process
  • Often lower quality vetting
  • Worse long-term performance

Hot IPO Markets

IPO activity spikes when:

  • Stock market is booming (2017, 2020-2021)
  • Sector is hot (tech in 1999, crypto-related in 2017-2021)
  • Easy access to capital

IPO activity crashes when:

  • Markets decline
  • Recession fears increase
  • Capital becomes scarce

Red Flags for IPOs

1. Negative earnings: Company is losing money; IPO revenue funds operations

2. Minimal revenue: Pre-revenue or early-stage companies IPO on growth hype

3. Insider selling: Founders selling huge portions signals concern

4. Accounting changes: Changes in accounting practices right before IPO suggest manipulation

5. Management turnover: Departures of CFO or board members suggest issues

Investment Strategy for IPOs

Avoid first-day buying: First-day prices are often inflated

Wait for lock-up expiration: Stock often declines; better entry points

Wait for reality check: Let the market price the company for 6-12 months

Focus on fundamentals: Revenue growth, path to profitability, competitive moat

Compare to peers: IPO valuation vs. similar public companies

The Bottom Line

IPOs create excitement and opportunities, but long-term returns are often disappointing. First-day pops are common, but they're driven by hype, not fundamentals.

Best strategy: Avoid IPO day, wait for lock-up expiration and initial valuation reset, then evaluate the company on fundamentals before investing.

◆ Sources

  1. IPO Explained — Investopedia
On this page
  • Why Companies Go Public
  • The IPO Process
  • IPO Allocation
  • First-Day Returns
  • Lock-Up Period
  • Long-Term IPO Performance
  • IPO Performance Drivers
  • IPO vs. SPAC
  • Hot IPO Markets
  • Red Flags for IPOs
  • Investment Strategy for IPOs
  • The Bottom Line
◆ Related reading
  • How Markets Find Their Price: Solving for Equilibrium
  • What Is a Bull Market?
  • What Is P/E Ratio?
  • What Is a Treasury Bond?
All Market Fundamentals →
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Erajah Scypion
Erajah Scypion
Founder, Scypion Finance

I got interested in economics the hard way — by not understanding what was happening around me. I'd read an explanation, nod along, and walk away knowing no more than when I started. After enough of that, I stopped looking for the resource I wanted and started writing it.

View full profile →

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