IPO Underpricing: Why New Issues Are Priced Below Market Value

IPOs are routinely underpriced—the share price set by underwriters at initial public offering is below what those shares sell for on the first day of public trading. This recurring pattern seems irrational: the issuer could capture more capital, yet systematically does not. The answer lies in information asymmetry, risk management, and the underwriter’s incentive to ensure success.

The Underpricing Pattern

An initial public offering typically closes its pricing the evening before trading begins. The underwriter sets an offer price—say, $20 per share—and the company’s founders, board, and investors accept. The next morning, trading opens at, say, $24. The shares have appreciated 20% before any real business news, earnings, or market moves. The IPO underpricing is that gap: the company sold shares for less than their immediate market value.

This is not a one-off anomaly. Academic research across decades and markets documents that IPOs underprice on average by 15–20% in the U.S., with some periods and sectors seeing even larger first-day pops. A 40% opening-day jump is striking but not unique. Underpricing is global: it occurs in Europe, Asia, and emerging markets.

Why does the issuer tolerate this? The company leaves cash on the table. If shares open at $24, the issuer could have priced the offering at $23 and sold the same quantity, capturing more capital. Why accept $20?

Information Asymmetry and Demand Uncertainty

The core driver is information asymmetry. The company’s managers, founders, and insiders know the business intimately. Public buyers—even sophisticated ones—do not. Managers have incentives to paint a rosy picture. Buyers know this and discount for risk.

Before IPO pricing, the underwriter conducts a roadshow: management meets large investors (funds, institutions) to gauge appetite. But the roadshow is not a market. It is one-directional communication, and large investors have strong bargaining power. The underwriter cannot simply ask, “Will you buy at $20?” and trust the answer. Investors who think $20 is cheap will say yes, but those with doubts will be silent. The underwriter learns demand is at least X, but not truly how much higher it would go.

Because true demand is uncertain, underpricing acts as insurance. A lower price is more attractive to skeptical buyers. It widens the appeal, reduces perceived risk, and makes allocating shares to many buyers easier. A $20 IPO appeals to more funds and retail investors than a $24 offering; the discount compensates for information risk.

The Winner’s Curse

A related phenomenon is the winner’s curse: the psychological fear of getting a bad allocation. If an institutional investor bids heavily for an IPO that is then allocated only partly, they worry they received shares because the underwriter knew demand was weak and needed to clear. Conversely, if they bid lightly and receive an outsized allocation, they fear they got stuck with the remainder—a sign the IPO is overpriced.

To avoid this dynamic, the underwriter prices low. A low price is attractive even to skeptical buyers (who feel they have a margin of safety), and demand appears strong to all participants. The appearance of strength itself feeds demand—a self-fulfilling loop that ensures the offering is oversubscribed and allocable to many buyers without leaving anyone feeling cursed.

Underwriter Incentives

The underwriter earns a management fee, typically 3–7% of the gross offering proceeds. On a $100 million IPO, that is $3–7 million in revenue. The underwriter does not earn a spread between the offer price and first-day trading price; they earn a commission on volume sold.

Because volume is the revenue driver, the underwriter wants the offering to succeed—to be fully allocated with strong demand. An overpriced IPO that is undersubscribed is a disaster: it must be withdrawn, repriced, or downsized, and the underwriter earns little or nothing. An underpriced IPO that is oversubscribed and pops is a triumph: it is oversubscribed, the underwriter earns full commission, and the company and early investors look wise for hiring that underwriter.

The underwriter’s incentive is to underprice slightly—just enough to guarantee success and lock in the commission. The $20 price ensures the $100 million offering will be 2× or 3× oversubscribed; investors fight to get allocations. The underwriter then returns home victorious, commissions in hand, and “covered” (having fully placed shares). The opening-day pop is not the underwriter’s loss; it is the issuer’s.

Lock-Up Periods and the Overhang

Another driver of underpricing is the lock-up period—the 6–12 months following IPO during which insiders (founders, employees, early investors) cannot sell their shares. At IPO, these insiders hold millions of shares they cannot immediately liquidate.

Public investors fear that when the lock-up expires, insiders will sell en masse, flooding the market and tanking the stock. This “overhang” risk depresses the IPO price. The company is discounted not for the quality of its business, but because investors anticipate future supply. Underpricing at IPO is a way to attract buyers despite this future threat: the margin of safety compensates for overhang risk.

When the lock-up expires, if the stock has risen (as it often does post-IPO), insiders will indeed sell some shares—both to diversify and to fund taxes on their gains. The flood sometimes materializes. But the original underpricing mitigated the impact by ensuring the post-IPO price was already elevated; insiders sell into strength.

Risk Allocation and Moral Hazard

Underpricing is also a form of risk allocation. The issuer bears the risk that the offering does not sell. The underwriter usually underwrites the offering (buys shares not allocated to investors and resells them), but at the priced level. If the offer price is $20 and demand is weak, the underwriter buys and holds at $20, betting on a recovery. Underpricing reduces the underwriter’s risk of being left with unsold shares at a loss.

Additionally, there is a moral hazard concern. If the underwriter is paid per dollar raised, they might underprice excessively—say, at $15 instead of $20—to ensure massive oversubscription and easy sales, even if $20 would have cleared the market. The issuer would then receive less capital than available. This is mitigated by the issuer’s negotiating power (they can hire a different underwriter) and the underwriter’s reputation (consistently leaving too much money on the table damages long-term relationships). But it does create a residual bias toward underpricing.

Evidence and Variation

Academic studies document that underpricing is largest for riskier, less transparent companies (biotech, unprofitable startups). It is smaller for large, well-known firms in mature industries. This pattern is consistent with information asymmetry: where uncertainty is highest, the underpricing discount is highest.

Underpricing also varies over time. In hot markets (1999, 2020–2021), underpricing was sometimes excessive—50%+ first-day pops—suggesting speculative demand and FOMO. In cold markets, underpricing shrinks. But it rarely disappears. Even in downturns, when IPO activity is low and demand is uncertain, underpricing persists.

Some companies and underwriters are known for pricing IPOs more aggressively—closer to where they expect the stock will trade. But even these “sophisticated” players underprice on average. The pattern is robust across geographies, industries, and time periods.

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