Learn the why. Not just the what.
Investing fundamentals, market logic, and the discipline behind good decisions.
The Investor Who Mistook a Bull Market for Genius
A sustained bull market is one of the most effective generators of false investment confidence available. It provides years of confirming evidence for whatever strategy the investor happens to be employing, creates the impression of skill in an environment where almost any approach produces positive returns, and sets up the subsequent bear market as a devastating test of convictions that were built on inadequate foundations.
Why You Credit Skill When You Win and Blame Luck When You Lose
The asymmetric attribution of outcomes—crediting skill when investments succeed and luck or external circumstance when they fail—is one of the most reliably documented features of investor psychology. It is also one of the most consequential, because it systematically prevents the accurate assessment of one's own investment ability.
The Risk of Letting Your Identity Decide Your Portfolio
The portfolio that reflects the investor's identity—her values, her professional expertise, her cultural background, her political views—is a portfolio that has been optimised for something other than financial return. Identity-driven portfolios are comfortable to hold, easy to explain, and systematically suboptimal.
Why ESG Investing Can Become a Form of Ego Validation
The growth of ESG investing has been accompanied by a phenomenon that deserves honest examination: the use of sustainable investment labels as a form of identity signalling that serves the investor's self-image more reliably than it serves either financial returns or the environmental and social outcomes it purports to advance.
The Danger of Investing in What You Believe In
The investment portfolio is not a values statement. This is a distinction that a significant and growing number of investors resist, for understandable psychological reasons. But the conflation of investment decisions with value expression produces predictable and avoidable investment errors.
Why Your Investment Should Have No Loyalty to Any Company
Loyalty is a virtue between people. In a portfolio, it's a liability. An investor who feels loyal to a company, because she's used its products for years, admires its management…
Why You Buy Stocks You Use as a Consumer
The familiarity heuristic in investing leads individuals to favour companies whose products they personally use or whose brands they recognise. This produces portfolios that feel intuitive and comfortable but that are systematically biased in ways that have nothing to do with investment merit.
The Mistake of Interrupting Compounding for Excitement
The most reliable way to destroy the long-run benefits of compound growth is to interrupt the compounding process in search of something more interesting. Each interruption—each sale of a compounding position to fund a new opportunity, each reallocation driven by excitement rather than analysis—resets the compounding clock on the exited position.
Why Compounding Requires Boring, Uncomfortable Patience
The conditions under which compounding operates most effectively are precisely the conditions that make investing most psychologically difficult. Compounding requires staying invested through declines that feel permanent, holding positions through periods of underperformance that feel indefinite, and resisting the activity that the emotional conditions of volatile markets demand.
Why the Best Investment Strategy Is One You Can Stick With
The theoretically optimal investment strategy isn't the one with the highest expected return in a spreadsheet. It's the one with the highest expected return that an actual investor can…
The Investor Who Quit Just Before the Compounding Kicked In
Compounding produces its most dramatic effects in the later periods of an investment horizon, which is precisely when the temptation to abandon the strategy is often greatest. The investor who exits just before the exponential phase of compounding is not merely forgoing future returns; she is forgoing the returns that justify all the patience that preceded them.
The Investor With No Plan Who Was Surprised by the Outcome
The absence of a financial plan is itself a plan—a plan to respond to circumstances as they arise, to make decisions in the context of each individual event rather than in the context of a coherent long-run strategy. This plan reliably produces worse outcomes than almost any explicit alternative.
Why You Underestimate the Power of Doing Nothing
In nearly every part of life, doing something beats doing nothing. Problems get solved through action, not inaction. Goals get met through effort, not passivity. Relationships survive…
Why Retirement Investing and Wealth-Building Are Different Games
Retirement investing and wealth-building share many surface features but are fundamentally different activities with different objectives, different constraints, and different optimal strategies. Treating them as identical—applying retirement investing logic to wealth-building, or wealth-building logic to retirement investing—produces suboptimal outcomes in both cases.
The Mismatch Between Your Goals and Your Portfolio
The most common form of investment mismanagement is not bad stock selection or poor market timing but a fundamental mismatch between the investor's actual financial objectives and the portfolio that has been assembled, ostensibly, to achieve them.
Why More Money Often Brings More Anxiety, Not More Peace
The common expectation that accumulating more money will produce more peace of mind is one of the more comprehensively disappointed predictions in personal finance. Not only does additional wealth frequently fail to reduce financial anxiety; in many cases it actively generates new forms of anxiety that were unavailable at lower levels of wealth.
Why Your Investment Strategy Has No Timeline
One of the most common gaps in individual investment planning, and one of the most consequential, is the absence of a defined time horizon. Without knowing when the money will actually…
The Hidden Cost of 'Keeping Up' With a Richer Social Circle
The social cost of appearing less wealthy than one's peers is a powerful psychological force that drives enormous amounts of economically irrational behaviour. It produces spending that serves appearance rather than wellbeing, borrowing that funds consumption rather than investment, and a chronic inability to save because the savings rate that would build wealth is incompatible with the consumption level that social belonging appears to require.
Why Lifestyle Inflation Is Silently Eating Your Wealth
Lifestyle inflation—the tendency for spending to rise in proportion to income, leaving the savings rate approximately constant regardless of income level—is among the most effective destroyers of long-run wealth available to the individual investor. It operates silently, incrementally, and with the full approval of one's social environment.
The Goalpost That Keeps Moving: Why Wealth Is Never Enough
The experience of achieving a financial goal and discovering that the satisfaction is temporary and the goalpost has moved is among the most common and least anticipated features of wealth accumulation. It is so reliable that it should be treated not as an occasional disappointment but as the default outcome.
Why Getting Rich Doesn't Fix Your Relationship with Money
The most widespread assumption in personal finance is that wealth, once achieved, resolves the psychological difficulties that the absence of wealth creates. This assumption is wrong in ways that are both well-documented and consistently surprising to those who discover its falseness through direct experience.
The Illusion That You Can Predict When to Get In and Out
The belief that one can identify, in advance, the optimal times to enter and exit the market is one of the most persistent and most thoroughly refuted ideas in finance. Its persistence in the face of overwhelming evidence to the contrary is a testament to the power of the psychological needs it serves.
Why 'Waiting for a Dip' Often Means Never Investing
Waiting for a dip before investing is one of the most common strategies among investors who are not yet invested, and one of the most reliably ineffective. It combines the psychological comfort of having a plan with the practical effect of permanent non-participation.
The Investor Who Waited for the Perfect Entry Point and Never Bought
The perfect entry point is always just around the corner. There is always a reason to wait—valuations are elevated, the macro environment is uncertain, a specific risk has not yet resolved, the market is due for a correction that will provide a better price.