All bull markets are alike. Each market bubble bursts in its own way.

The South Sea frenzy of 1720 had debt-fueled speculation. The dot-com boom had internet evangelism. Bitcoin's 2017 surge revolved around crypto evangelists and retail traders. Yet strip away the narratives, technologies, and eras, and a familiar shape starts to emerge.

In a recent report, market analyst Luke White argues that six major historical peaks — from the South Sea Bubble to Nasdaq 2000 and Bitcoin 2017 — followed an almost identical four-stage mechanical progression.

The implication is uncomfortable for investors who prefer tidy explanations built around headlines or geopolitical shocks. Crashes are rarely caused by a single news event. More often, they are the inevitable unwinding of leverage, crowd behavior, and structural fragility already embedded in the market.

Dissecting The Stages

The pattern begins quietly. Stage one is smart-money accumulation, when fundamentals improve, but broader markets remain skeptical.

Examples include oil at $35 in 2020, silver near $5 in the late 1970s, or Bitcoin around $200 in 2015. Stage two follows as the story escapes specialist circles and enters mainstream media. Retail participation increases, momentum accelerates, and institutional investors begin scaling out into strength.

Then comes stage three, bringing the mania. This vertical phase is when price action compresses into a near-parabolic climb, and holdouts finally capitulate.

White describes it as the moment sitting on the sidelines becomes psychologically unbearable.

Velocity goes through the roof. Gains that previously took a year now happen in weeks. Both sides of the market are starting to fall into the trap. Career risk pushes institutions into crowded trades, while retail traders pile in through fear of missing out. The final buyers arrive precisely when risk is highest.

Stage four is the cascade. Markets usually print one final intraday high before fading sharply. The reversal initially looks manageable, even healthy. Then liquidity disappears. Liquidity is often invisible until it disappears. Once it does, markets can fall through what White describes as an 'air pocket' beneath prices.

What separates a blow-off top from an ordinary correction is not the speed of the rally, but the persistence and violence of the following decline.

Leverage and Concentration

Leverage is the accelerant that turns a sell-off into a crash. When prices reverse, the margin call mechanism triggers selling pressure regardless of the investor's conviction. Once traders are forced to liquidate, conviction becomes irrelevant.

However, sometimes they aren't, and then the bubble might deflate slowly. Such examples are rare, but White cites the 1989 Nikkei as a recent one. Despite extreme valuations and widespread speculation, the ownership was prevalent among insurers, corporations, and household savings rather than heavily leveraged retail traders.

Without widespread margin exposure, there was no cascading liquidation event. For that very reason, Nikkei rolled over, gradually bleeding instead of detonating in a classic blow-off reversal.

Another recurring signal is market concentration. Bank of America's study of 190 years of market history found that every instance in which the top 10 stock concentration exceeded 40% of the overall market coincided with a major market top. At that point, the broader index effectively becomes dependent on a handful of names. If those leaders crack, diversification stops functioning the way investors expect.

Structure, Not Headline Explanation

Additionally, White challenges the "catalyst illusion." Investors might want a headline explanation after the crash, but evidence suggests the true triggers are structural changes that shift the economics of staying long.

For example, the launch of institutional Bitcoin futures coincided almost perfectly with crypto's 2017 peak. New shorting mechanisms, regulatory shifts, or tightening financial conditions usually appear near terminal highs.

The main consideration is that human psychology evolves far less than technology or financial infrastructure. Humans respond remarkably consistently to loss aversion, crowd behavior, and fear of missing out.

Because of that, the most reliable warning signs are structural rather than narrative-driven: concentrated leadership, stretched leverage, and evidence that retail participation has become euphoric.