Should Investors Buy an IPO on Day One, or Wait for the Dust to Settle?

Initial Public Offerings (IPOs) generate excitement—and pressure. Headlines celebrate first‑day “pops,” clients ask about getting in immediately, and fear of missing out can drive decision‑making. But history and academic research tell a more nuanced story: while day‑one trading can be lucrative for a select group, patience often serves long‑term investors better.

The Day‑One Pop: Attractive, but Often Misleading

IPOs are frequently priced to rise on the first day of trading, a phenomenon known as underpricing. According to long‑running research by Professor Jay Ritter at the University of Florida, U.S. IPOs have delivered average first‑day gains of roughly 15–20% over the past several decades. https://site.warrington.ufl.edu/ritter/ipo-data/

However, most of these gains accrue to institutional investors who received allocations at the IPO price and not to retail investors buying after trading begins. By the time individual investors can purchase shares, prices may already reflect the excitement.

In other words, the headline gain is real but often inaccessible.

Long‑Term Performance Tells a Different Story

A substantial body of academic research finds that IPOs, on average, underperform the broader market over the following three to five years.

• The same University of Florida study shows IPOs lag market benchmarks by several percentage points annually in the years after going public. https://site.warrington.ufl.edu/ritter/ipo-data/

• A 2025 peer‑reviewed study in the International Journal of Innovative Research in Engineering and Management finds that early enthusiasm often fades as valuation assumptions normalize, particularly for companies that go public during “hot” IPO markets. [academia.edu]

This gap between early excitement and longer‑term fundamentals is one reason many advisors recommend patience.

Why Waiting May Improve Entry Points

1.  Price Discovery Takes Time

In the first weeks or months, a newly public stock is finding its true market value, Volatility is high, earnings expectations are untested, and investor sentiment can swing sharply. Allowing time for several earnings reports helps investors better assess fundamentals. tradealgo.com article titled IPO Investing Guide: How to Evaluate, Buy, and Trade New Public Companies dated 4/1/2026

2. Quiet Period Expiration (≈25 Days)

Following an IPO, underwriters are restricted from publishing research. When this “quiet period” ends—typically around day 25—coverage begins, increasing transparency and sometimes moving prices meaningfully in either direction. [ipopro.ren…apital.com]

3. Lock‑Up Expiration (90–180 Days)

Insiders and early investors are usually prohibited from selling shares immediately after the IPO. When lock‑ups expire, a surge of supply often enters the market, frequently putting downward pressure on prices and creating potential buying opportunities. [investopedia.com]

Investopedia notes that lock‑up expirations are one of the most consistent volatility events in a stock’s early life, and price declines around these dates are common. [investopedia.com]

4. Established Trading Patterns (6–12 Months)

Market data shows that some of the strongest IPO investments are made six to twelve months after listing, once expectations have rest, insider selling has largely occurred, and institutional ownership stabilizes. tradealgo.com article titled IPO Investing Guide: How to Evaluate, Buy, and Trade New Public Companies dated 4/1/2026

When Might Day One Make Sense?

Buying on day one may be appropriate in limited circumstances:

• Long‑term conviction in a high‑caliber business with durable competitive advantages
• Reasonable valuation relative to growth prospects
• Willingness to tolerate short‑term volatility and possible drawdowns

Even then, many professionals advocate phased buying rather than a single entry point. [easystreet…esting.com]

Bottom Line: Excitement vs. Evidence

IPOs are compelling stories but not always compelling investments on day one.

For most long‑term, risk‑aware investors, history suggests:

• The biggest first‑day gains are often inaccessible
• Volatility is highest early on
• Better risk‑adjusted opportunities frequently emerge after the initial excitement fades

Waiting for clearer data, insider selling to pass, and fundamentals to prove out may not feel exciting, but it has often been the more disciplined choice.