Learn the why. Not just the what.
Investing fundamentals, market logic, and the discipline behind good decisions.
Tulip Mania: What the First Famous Bubble Actually Teaches
Tulip mania is invoked constantly as the archetypal bubble, yet modern scholarship suggests the economic damage was limited. The real lesson lies in how the story itself became distorted.
The South Sea Bubble: When Sophistication Offers No Protection
The South Sea Company's rise and collapse in 1720 demonstrated that intelligence, education, and even mathematical genius provide no protection against the pressure of watching others grow rich.
The Crash of 1929: How Long a Recovery Can Take
The market decline that began in 1929 took the Dow down nearly ninety percent and did not reclaim its prior peak for twenty-five years. It is the clearest available answer to how long an investor may have to wait.
The Nifty Fifty: When Great Companies Are Not Great Investments
The Nifty Fifty of the early 1970s were sound businesses purchased at prices that assumed permanence. The episode remains the clearest demonstration that quality and value are separate questions.
Black Monday 1987: A Fall Without a Cause
The largest single-day percentage decline in American market history occurred without any identifiable triggering event, and much of it was recovered within two years.
Japan's Asset Bubble: When a Recovery Takes Thirty Years
Japan's asset bubble and its long aftermath demonstrate that the assumption of eventual recovery, while broadly supported by history, offers no guarantee about timing.
Long-Term Capital Management: The Limits of Brilliance
LTCM's 1998 collapse showed how leverage converts a temporary and improbable market movement into permanent ruin, regardless of the sophistication behind the positions.
The Dot-Com Bubble: Right About the Technology, Wrong About the Price
The technology bubble of the late 1990s demonstrates that being right about a transformative trend provides no protection whatever against paying too much to participate in it.
Trading Frequency and Returns: What Sixty Thousand Households Revealed
Research examining real brokerage accounts found that the most active traders earned substantially less than the least active, and that the gap was largely explained by the costs of activity itself.
The Disposition Effect: Selling Winners and Keeping Losers
The disposition effect is the documented tendency to realise gains too readily and to hold losses too long. It is driven by the reluctance to admit a mistake rather than by any analysis.
The Gap Between a Fund's Return and Its Investors' Returns
Studies consistently find that the returns investors actually earn fall short of the returns their funds produced, because of when they buy and sell. The gap is a measure of self-inflicted cost.
The Meme Stock Episode: When Coordination Meets Leverage
The 2021 meme stock episode showed how coordinated retail buying could produce extraordinary price movements, and how the distribution of outcomes among participants was extremely uneven.
Overconfidence: The Investors Who Traded Most Were Sure They Were Right
Research links overconfidence directly to excessive trading and inferior returns. The mechanism is not that confident investors choose worse, but that they choose more often.
Home Bias: Why Investors Overweight Their Own Country
Home bias is the documented tendency to concentrate holdings in domestic securities far beyond what a global allocation would imply, driven by familiarity rather than analysis.
Chasing Performance: Why Money Arrives at the Top
Fund flows consistently follow past performance, meaning capital arrives after gains and departs after losses. The pattern is measurable, systematic, and precisely backwards.
Survivorship Bias: The Records We Never See
Survivorship bias systematically removes failures from the record, causing investors to overestimate the odds of success in nearly every domain they examine.
Enron: When the Accounts Are the Product
Enron's collapse showed that reported earnings are an interpretation rather than a fact, and that an investor who cannot understand how a company makes money has no basis for owning it.
The 2008 Financial Crisis: When Everything Correlates
The 2008 crisis demonstrated that diversification calculated from historical data can vanish precisely when it is needed, because the conditions that cause a crisis are the conditions that make everything move together.
Lehman Brothers: What Leverage Means in Practice
Lehman's failure demonstrates that a highly leveraged institution can be destroyed by a modest decline in asset values, and that a business dependent on short-term funding can fail while still nominally solvent.
The Flash Crash of 2010: A Market That Briefly Ceased to Exist
The Flash Crash showed that prices are not a fact but a consequence of someone being willing to transact, and that this willingness can withdraw almost instantaneously.
The European Debt Crisis: When Words Move Markets
The European sovereign debt crisis demonstrated how expectations become self-fulfilling, and how a credible commitment can alter outcomes without any action being taken.
Wirecard: When the Watchdogs Chase the Critics
Wirecard's collapse showed that institutional endorsement is not evidence, and that scepticism was punished by the very authorities charged with protecting investors.
Archegos: How a Single Portfolio Cost Banks Ten Billion Dollars
Archegos combined extreme concentration, heavy leverage, and exposures invisible to each lender individually, demonstrating how quickly such a structure unravels.
The COVID Crash: The Fastest Fall and the Fastest Recovery
The 2020 crash and recovery demonstrated that the shape of a decline carries no information about its duration, and that acting on a correct forecast about the world can still produce a poor result.