Market history

Markets repeat themes, not exact patterns. Reading the history of bubbles and crashes is the closest thing investors have to a laboratory — every named event below was traumatic for participants and instructive for everyone since. Pros learn from these instead of having to live through their next equivalent unprepared.

1987 — Black Monday

October 19, 1987. The Dow Jones Industrial Average fell 22.6% in a single day — still the largest one-day percentage drop in US market history. No earnings news, no policy shock, no obvious cause.

Post-mortem identified a few contributors:

• Portfolio insurance — a popular institutional strategy that automatically sold S&P futures as the market fell. Designed to limit losses, it created a feedback loop: selling triggered more selling.
• Index arbitrage — when futures prices diverged from cash, arbitrageurs would buy whichever was cheaper and short the other. Once liquidity broke down, this mechanism failed catastrophically.
• Poor market plumbing — NYSE specialist firms ran out of capital. Order books vanished. The "market" effectively ceased to exist for chunks of the day.

What we learned. Liquidity disappears in stress. Strategies that look smart in normal markets ("buy the dip", "sell vol") can become catastrophic when everyone tries to do them at once. The 1987 crash didn't lead to a recession — by mid-1988 markets had fully recovered — but it ended the era of unbridled trust in algorithmic risk management.

2000 — Dot-com bust

By March 2000, the NASDAQ had quintupled in 4 years. Companies with no revenue and "eyeballs" as their primary metric IPO'd at multi- billion-dollar valuations. Pets.com, Webvan, Boo.com — all flamed out within months. Cisco, briefly the most valuable company in the world at $500B in March 2000, lost 89% over the next 30 months and didn't reclaim the high until 2021.

What had changed? Several things at once:

• Y2K spending pull-forward. Tech budgets had been front-loaded into 1999 to ensure systems wouldn't fail on Jan 1, 2000. Budgets evaporated in Q1 2000.
• Fed tightening. Six rate hikes from June 1999 through May 2000 raised the cost of capital for every cash-burning tech firm.
• Public realization. Q1 2000 earnings season exposed how few of these companies had paths to profitability.

The NASDAQ peaked March 10, 2000 at 5,048. It bottomed October 9, 2002 at 1,114 — a 78% drawdown. It didn't reclaim its 2000 high until 2015, 15 years later.

What we learned. "This time is different" almost never is. Every cycle has its own narrative for why old valuation rules don't apply. The dot-com era was the canonical case. Most of the eventual winners (Amazon, Apple, Cisco) survived; most participants did not — they bought late, leveraged up, and were forced to sell at the bottom. Even great businesses can be terrible investments at the wrong price.

2008 — Global Financial Crisis

The most studied financial event in modern history. A 50,000-foot view:

US banks had been writing mortgages with relaxed standards through 2002-2007, then packaging them as "asset-backed securities" and selling the slices to global investors. Rating agencies stamped many of these as AAA. Insurers (most famously AIG) wrote credit-default swaps on them, effectively guaranteeing the senior tranches.

When US house prices started falling in 2006, the bottom tranches began to default. By mid-2008, even AAA tranches were showing losses no model had predicted. The system seized:

• March 2008: Bear Stearns rescued by JP Morgan at $2/share (later raised to $10) as part of a Fed-backed sale.
• September 7, 2008: Fannie Mae and Freddie Mac placed into government conservatorship.
• September 15, 2008: Lehman Brothers files for bankruptcy. The government, which had backstopped Bear, declined to backstop Lehman. Markets break.
• September 16, 2008: AIG receives an $85B emergency Fed loan; effectively nationalized.

S&P 500 peaked October 9, 2007 at 1,565 and bottomed March 9, 2009 at 677 — a 57% drawdown. Markets didn't reclaim the 2007 high until April 2013.

What we learned. Leverage and complexity hide risk. Models break when the regime shifts. "Too big to fail" is real. Holding through the worst drawdown of your life is the price of admission to long-run equity returns — but it's a price most retail investors can't pay (selling at the bottom is the most-cited reason individual investors underperform indices over decades).

2020 — COVID crash and the V-shaped recovery

The fastest bear market in history. From February 19, 2020 to March 23, 2020 — 33 days — the S&P 500 fell 34%. The cause was real-economy: lockdowns ground commerce to a halt; airlines near-bankrupt; oil briefly traded negative on April 20, 2020 because storage facilities filled.

And then, equally fast, a V-shaped recovery. The Federal Reserve cut rates to zero on March 15, 2020, launched unlimited QE on March 23, and the US Treasury sent direct payments to households. Liquidity flooded the system. The S&P reclaimed its February high by August 2020 — while real-economy unemployment was still in double digits.

Several name-level stories ran through the recovery:

• Tesla: 6× from March 2020 to January 2021. Joined S&P 500 in December 2020 — the largest market-cap addition in index history at the time.
• Zoom: 7× as remote-work demand surged.
• Robinhood / retail boom: lockdowns + stimulus checks + zero interest rates created an unprecedented surge of first-time retail traders. Reddit's r/wallstreetbets became the face of it. GameStop January 2021 was the climax.

What we learned. Central-bank policy can overwhelm fundamental reality, at least temporarily. The fastest crashes can be followed by the fastest recoveries — selling at the March 2020 bottom missed the most explosive 6-month rally most traders will see in their careers. Conversely, "stocks only go up" became the prevailing retail narrative through 2021, setting up the next chapter.

2022 — The inflation regime change

After 14 years of zero rates, inflation arrived. CPI hit 9.1% in June 2022 — the highest in 40 years. The Fed responded with the most aggressive tightening cycle since Volcker: from 0% to 5.5% in 18 months. Asset prices recalibrated to a higher discount rate.

Damage was concentrated in long-duration assets — anything whose cash flows were far in the future:

• NASDAQ-100: 35% drawdown peak-to-trough.
• ARKK (high-growth tech ETF): 78% drawdown — peak February 2021, trough late 2022.
• Crypto: Bitcoin -77%; Terra/Luna collapsed to zero May 2022; FTX bankrupted November 2022.
• UK pension crisis: September 2022 LDI strategies blew up as gilts cratered; Bank of England forced into emergency intervention.

Meanwhile, energy and commodities outperformed; XLE rose ~40% in 2022 while QQQ fell ~33%. Sector rotation was the trade of the year.

What we learned. Discount rates matter. Stocks aren't bonds, but they price off the same risk-free curve. When the curve shifts, every long-duration asset reprices — sometimes violently. The 2020-21 retail boom assumed zero rates were permanent; that assumption broke and a generation of "buy the dip" traders met their first real bear market.

Patterns across crises

Every crisis is unique in detail. Themes that repeat:

• Leverage is the multiplier. Every blow-up has involved excessive borrowing somewhere — by households (2008), hedge funds (LTCM 1998), pension funds (UK 2022), or corporations (junk bond cycles).
• Liquidity disappears when you need it. Bid-ask spreads widen, market orders fill at terrible prices, ETFs decouple from NAV. Plan for this in advance.
• "This time is different" usually isn't. Bubbles rhyme. The narrative changes (railroads, radio, dot-com, crypto, AI), the underlying psychology doesn't.
• The recovery rewards patience and punishes panic. Selling at the bottom is the most consistent way retail underperforms. Buy-and-hold through a crisis beats trying to time it for almost everyone.
• Position sizing decides survival. If you couldn't hold your portfolio through a 50% drawdown without forced selling, you were too levered or too concentrated, full stop.

Going deeper

Books worth your time:

• Charles Mackay, Extraordinary Popular Delusions and the Madness of Crowds (1841) — original mass-delusion text. South Sea Bubble, Tulip Mania.
• Edward Chancellor, Devil Take the Hindmost (1999) — history of speculation across centuries.
• Andrew Ross Sorkin, Too Big to Fail (2009) — narrative history of the 2008 crisis.
• Michael Lewis, The Big Short (2010) — view of 2008 from the contrarians who predicted it.
• Adam Tooze, Crashed (2018) — global political-economic consequences of 2008.