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Diary of a CEO · 2026-04-30 · 1h 40m

Stock Expert: Becoming Rich Is Simple, But You Won’t Do It!

A portfolio manager argues getting rich is simple: buy low-cost index funds, ignore them, and avoid the costly mistakes most people make.

Stock Expert: Becoming Rich Is Simple, But You Won’t Do It!
The guest

Ben Felix — Portfolio manager and Chief Investment Officer at PWL Capital, whose firm manages money for more than 3,000 clients. He's known for evidence-based, academic-research-driven finance content on YouTube and the Rational Reminder podcast.

The gist

Steven Bartlett interviews Ben Felix on building wealth using research-backed principles rather than the 'car dealership' sales tactics of much of the finance industry. They walk through the top financial mistakes people make, from not earning or saving enough to taking the wrong investment risks, and unpack the rent-versus-buy decision via Felix's '5% rule.' Felix makes the case for low-cost global index funds, a near-100% equity allocation, and simply not looking at your portfolio. The conversation also covers tax and estate planning, who you marry (tightwads vs. spendthrifts), market efficiency, and whether AI and a possible AI bubble change any of the long-term advice.

Big reveals

  • Felix argues, against conventional wisdom, that it's probably suboptimal for young people to save heavily and that they may not need to save as much as society pressures them to.
  • Spending $10,000 today really costs you ~$150,000, the amount it would grow to at 7% over 40 years.
  • Felix's '5% rule': divide a home's price by 5%, then by 12, to find the monthly rent at which renting and owning break even.
  • Canada is currently in one of its biggest inflation-adjusted real estate drawdowns going back to 1975.
  • Cites the 'most controversial paper in finance' finding that a 100% equity portfolio (one-third domestic, two-thirds international) is optimal across the lifecycle, contradicting the move-to-bonds-with-age wisdom.
  • Felix reveals his own portfolio is 100% stocks with no crypto, plus his home and equity in his firm.
  • His pro-tip for his fiance's strong returns: she keeps forgetting her investing password, so she never touches the account.
  • Multiple studies (Fidelity, Warwick, UC Berkeley, Revolut) show women outperform men as investors, largely by trading less and being less overconfident.

Things worth remembering

  • Academic research shows the more often people check their investments, the less risk they take and the lower returns they earn.
  • There's a mechanical historical link between education type and lifetime earnings, with engineering, finance, and business degrees among the highest.
  • Home maintenance can realistically run over 2% of property value per year, far higher than the 1% many assume.
  • You can borrow against your stocks (e.g. $500k against $1M of stock) tax-free, since loans aren't taxed, though margin-call risk remains.
  • Research shows 'tightwads' and 'spendthrifts' are more likely to marry each other than someone with their own spending profile, leading to more marital money conflict.
  • At 3% inflation, $10,000 cash under the mattress loses roughly half its purchasing power over 20 years (down to ~$5,336).
  • Bitcoin: PWL Capital and Felix personally do not allocate to it, viewing it as ideological and speculative rather than a good investment.
  • The ATM paradox: ATMs didn't kill bank tellers; cheaper branches multiplied, creating more teller jobs overall, an analogy for AI's labor impact.
  • An 1847 magazine passage about a 'gloomy moment in history' reads almost identically to fears about today's world.
  • Warren Buffett famously won a 10-year bet that an S&P 500 index fund would beat hedge funds picked by Ted Seides.