Learn the why. Not just the what.
Investing fundamentals, market logic, and the discipline behind good decisions.
Why More Financial News Leads to Worse Decisions
The relationship between financial news consumption and investment decision quality is negative. This is not because financial news is uniformly worthless but because the ratio of actionable signal to disruptive noise in financial media is sufficiently low that more consumption produces more noise exposure without proportional improvement in decision quality.
Why Automating Savings Removes the Worst Decision-Maker: You
The worst decision-maker available for the savings process is the human investor making real-time choices about how to allocate each dollar of income as it arrives. Real-time financial decision-making occurs in exactly the conditions—full awareness of current spending opportunities, recency bias toward recent spending patterns, susceptibility to present bias—that produce the worst outcomes.
Why the Most Informed Investors Often Perform the Worst
One of the most robust, and most practically useful, findings in behavioral finance is also one of the most counterintuitive: more information is associated with worse investment…
The Psychology Behind Why You Never Have 'Enough' Left to Invest
The investor who intends to save whatever is left over at the end of the month typically saves nothing, because there is never anything left over. This is not a consequence of insufficient income; it is a consequence of the way spending decisions are made when saving is treated as residual rather than primary.
Why Saving Feels Like Sacrifice But Isn't
The psychological experience of saving is dominated by a sense of deprivation—of forgoing current pleasures in favour of a future that is abstract and uncertain. This experience is real, but the framing that produces it is misleading. Saving is not sacrifice; it is the purchase of future optionality at a price that compounding makes extraordinarily favourable.
The Budget You Made and Never Followed
The creation of a budget is one of the most commonly undertaken and least successfully maintained financial activities available to the individual investor. The budget feels like a solution to the problem of insufficient savings; the subsequent failure to adhere to it feels like a personal failing. Both perceptions are partially wrong.
Why You Spend What You Earn No Matter How Much You Make
The elasticity of spending with respect to income is, for most people, remarkably close to one: each additional dollar of income generates approximately one additional dollar of spending. This relationship is not driven by necessity but by the psychological dynamics of consumption that operate largely independently of the absolute level of income.
Why Random Success Is the Most Dangerous Kind
A run of successful investment outcomes is always welcome. When those outcomes are the product of random variance rather than genuine skill, the welcome they receive can be actively dangerous—because random success produces the same psychological effects as skill-based success while providing none of the actual predictive power that genuine skill would imply.
How Luck Disguised as Skill Sets You Up for Disaster
The misidentification of luck as skill is one of the most consequential errors available to the investor, because it produces a positive feedback loop: lucky outcomes generate confident self-assessment, confident self-assessment generates increased risk-taking, increased risk-taking amplifies the eventual losses when luck reverses.
Why Survivorship Bias Makes Bad Strategies Look Great
Survivorship bias is the error of evaluating a strategy, an asset class, or an investment approach based on the outcomes of survivors—the funds still in operation, the strategies that produced positive returns, the investors who are publicly visible—while ignoring the much larger population of failures that has been silently removed from the data.
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.