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Investing principles
Twelve principles that separate investors who build wealth from those who do not — each one checked against decades of market data.
Rule number one: surviveYou can only compound money you still have. Why avoiding large losses matters more than chasing large gains.
Why you need a repeatable processAn investment process is a recipe: the same inputs lead to the same decision. That makes results measurable — and emotions manageable.
Consistency beats brillianceInvesting a fixed amount every month — through crashes and booms — is one of the most powerful habits in personal finance.
No exposure, no upside — but avoid the worstMissing a few of the best months costs a fortune. Missing a few of the worst earns one. What that means for how you invest.
Asymmetry: cut the left tail, keep the rightGood investments have more upside than downside. How to build that asymmetry into a portfolio — and what it looks like in the data.
Time is your edgeOver one year, stocks are a gamble. Over 15 years, they have never lost money in our data. Why your time horizon changes everything.
The order of returns mattersTwo investors with exactly the same yearly returns can end with very different wealth. Why a crash early in retirement is so dangerous.
Why a few winners drive most of the returnsReturns are not evenly spread: a minority of markets, stocks and months produce most of the gains. How to make sure you own them.
Nobody knows what the market will do nextForecasts are entertainment. Most daily and monthly moves are noise. How to invest without needing to know the future.
Do less, profit moreActivity feels productive, but every trade costs money and invites mistakes. Why the best investors are often the least busy.
What returns are realistic?Promises of 50% a year are a red flag. What long-term returns stocks, bonds and gold have really delivered — and what the best investors achieved.
Crashes: where long-term returns are made — if you survive themCorrections every few years, deep bear markets every decade. How often markets crash, what happens afterwards and how to be ready.