The Echoes of 1987: Why Today’s Mega-IPO Boom Carries a Familiar Warning

By Barry Eichengreen
July 3, 2026

The global financial markets are currently gripped by a fervor not seen in a generation. A relentless wave of "mega-IPOs"—massive initial public offerings driven by breakthroughs in artificial intelligence, commercial space exploration, and advanced orbital infrastructure—has captured the imagination of investors worldwide. As capital floods into these speculative frontiers, the lexicon of Wall Street has been flooded with historical comparisons. Are we witnessing the next great leap in human productivity, or are we merely inflating the largest asset bubble in history?

While no historical analogy is perfectly congruent, there is one that stands out for its chilling relevance: the aftermath of the Nippon Telegraph and Telephone (NTT) IPO in February 1987. As we navigate the current landscape, the NTT case serves as a sobering reminder that even the most revolutionary technologies can, in the short term, lead to catastrophic market misallocations.

The Landscape of Speculation: Main Facts

The current market cycle is defined by a concentration of capital in "frontier-tech" firms. Unlike the internet boom of the late 1990s, which focused on the democratization of information, the current cycle is anchored in physical and cognitive capital: autonomous manufacturing, generative AI, and satellite-based logistics.

The sheer scale of these IPOs is unprecedented. Companies that have yet to turn a profit—or in some cases, those that have yet to move beyond prototype stages—are being valued at multiples that imply near-total global market dominance within a five-year horizon. This "mega-IPO" phenomenon is characterized by:

• Aggressive Valuation Metrics: Traditional P/E ratios have been discarded in favor of "Total Addressable Market" (TAM) projections that assume zero friction in adoption.
• Retail Participation: A massive influx of individual investors, fueled by algorithmic trading platforms, has decoupled stock prices from traditional institutional due diligence.
• Infrastructure Overhang: Just as in the railway booms of the 19th century, current investors are front-loading the cost of infrastructure—data centers, orbital launch pads, and lunar transit stations—well before the consumer demand for these services has fully matured.

A Historical Chronology: The Shadow of 1987

To understand the potential trajectory of today’s market, we must return to Tokyo in the late 1980s.

The NTT IPO: A Prelude to Collapse

In February 1987, the Japanese government privatized Nippon Telegraph and Telephone. It was, at the time, the largest IPO in financial history. The stock was launched at a valuation that defied gravity, fueled by Japan’s burgeoning economic miracle and a cultural belief that Japanese corporate dominance was inevitable.

• February 1987: NTT hits the market. The stock price skyrockets, driving the Nikkei 225 to record highs. Retail investors, convinced that "NTT can only go up," borrow heavily against their homes to buy shares.
• October 1987: The global contagion of "Black Monday" hits. While the US markets recovered relatively quickly, the NTT-led bubble in Japan entered a phase of terminal decay.
• 1990–1992: The "Lost Decade" begins. As the Japanese bubble burst, NTT’s share price plummeted, wiping out the life savings of millions of households. The contagion spread from telecom to real estate and banking, paralyzing the Japanese economy for thirty years.

The lesson from 1987 is not that the technology—telecommunications—was a failure. In fact, NTT became the bedrock of modern Japanese connectivity. The lesson is that the financialization of that technology, when divorced from current-day earnings, creates a fragility that can break the broader financial system.

Supporting Data: Infrastructure vs. Returns

Modern analysts often compare our current moment to the "Electrification Boom" of the 1890s. In that era, the technology was sound, but the rollout took three decades. During those thirty years, many early "electrification" companies went bankrupt, leaving only the survivors to reap the rewards.

Comparative Valuation Metrics

The data today shows that capital expenditure (CapEx) in AI infrastructure has outpaced corporate revenue growth by a factor of 4:1. This is a classic "J-curve" risk. If the revenue growth from these AI and space technologies does not materialize within the next 24 to 36 months, the "infrastructure overhang" will force a deleveraging event.

Official Responses and Regulatory Posturing

Global financial regulators have begun to sound the alarm, though their interventions remain muted to avoid triggering the very panic they fear.

• The Federal Reserve: Recent minutes from the Federal Open Market Committee (FOMC) suggest a growing concern regarding "asset price misalignment in frontier-tech sectors." While the Fed has not signaled a direct curb on IPO activity, they have increased capital reserve requirements for banks heavily exposed to speculative tech debt.
• The European Securities and Markets Authority (ESMA): ESMA has issued a formal warning to retail investors, emphasizing that "valuation is not synonymous with viability." They are pushing for stricter disclosure requirements regarding the technical limitations of current AI models.
• Corporate Leadership: Interestingly, the CEOs of the primary mega-IPO firms remain steadfast. In a joint statement last month, leaders from the "Big Five" AI conglomerates argued that the current spending is "foundational," claiming that the historical comparisons to 1987 are "misguided and fundamentally misunderstand the speed of digital compounding."

Implications: The Road Ahead

The implications of this cycle are profound, affecting not just the stock market, but the structure of the global economy.

1. The Risk of Systemic Contagion

If the mega-IPO market experiences a sharp correction, the fallout will be felt far beyond tech portfolios. Modern pension funds have increasingly shifted toward "alternative" assets, including private equity stakes in pre-IPO AI firms. A 30% drop in these valuations would create an immediate liquidity crisis for institutional investors who rely on stable, long-term returns.

2. The Infrastructure Gap

We are effectively building a digital and extraterrestrial highway system. If we reach the end of the current funding cycle without sufficient consumer adoption, we will be left with trillions of dollars in "stranded assets"—data centers that consume more power than they generate and orbital platforms that serve no commercial purpose.

3. The "Productivity Paradox"

Economists are currently debating the "Productivity Paradox." Despite the massive investment in AI, global productivity growth remains stagnant. If these IPOs do not translate into measurable output in the real economy—moving beyond "chatbots" to tangible industrial efficiencies—the market will eventually force a correction.

Conclusion

History does not repeat itself, but it often rhymes. The euphoria surrounding today’s mega-IPOs mirrors the fervor of 1987, the optimism of the railway expansionists, and the hubris of the dot-com era.

The technologies of 2026—AI, autonomous logistics, and space-based energy—are undeniably transformative. However, the market’s current attempt to price the next fifty years of innovation into today’s share prices is a dangerous game. When the NTT bubble burst, the tragedy was not that Japan failed to modernize, but that the process of modernization was financed through a mechanism that guaranteed a crash.

As investors, we must ask: Are we betting on the future of humanity, or are we simply betting on the persistence of a bubble? The answer, as it was in 1987, will likely be found in the cold, hard realization that no amount of technological promise can defy the gravity of fiscal reality. Investors would do well to look past the IPO prospectuses and examine the balance sheets—before the market decides to do the examination for them.