Rule Breaker Investing

From buying in thirds instead of waiting for dips, to a dishwasher hack that still requires the humans to remember the hack, to one listener’s beautifully rebalanced “harbor-and-horizon” portfolio, this month’s mailbag is as motley as ever. Along the way, David cleans up a long-used reference to Heisenberg vs. Hawthorne, hears how Magical Athlete has become a family hit, and considers a pair of listener suggestions that may permanently improve the Market Cap Game Show.



Companies Mentioned: ADBE, DUOL, HUBS, INTU, ISRG, MELI, NBIS, NVDA, RKLB, TSMHost: David GardnerProducer: Bart Shannon
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What happens when you bring together three storytellers, three themes, and a podcast devoted to making you smarter, happier, and richer? You get Three Fools, our continuing episodic series! This time ’round, David is joined by superstar guests Bill Burke and Mahan Tavakoli as they each share three stories—one to educate, one to amuse, and one to enrich. From investing lessons that last a lifetime to laugh-out-loud anecdotes and heartwarming life insights, these nine stories are packed with inspiration and practical takeaways.Host: David GardnerGuests: Bill Burke, Mahan TavakoliProducer: Bart Shannon
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Some financial terms sound scarier than they are. Others sound familiar… right up until you realize you don’t actually know what they mean.This week, David returns with Volume 8 of Gotta Know the Lingo, welcoming Fool analysts Alicia Alfiere, Amanda Kish, and Nick Sciple to help translate the language of investing for the rest of us. Some terms are simpler, some more advanced, all of them useful—and if you’ve ever nodded along to financial jargon hoping nobody would ask a follow-up, this episode is for you. As always, there’s a scoring system, a little Foolish fun, and a few concepts that may stick with you longer than the ticker tape.Host: David GardnerGuests: Alicia Alfiere, Amanda Kish, Nick ScipleProducer: Bart Shannon




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Can you quickly decide which AI companies deserve your attention—and which to skip? What do you believe that most people don’t? And is there a simple trick, learnable in one afternoon, that can delight kids (and maybe yourself) for a lifetime?

This week, David returns with Volume 11 of one of our OG episodic series: Mental Tips, Tricks & Lifehacks. He shares seven small ideas that punch above their weight: from a clever $10 household fix, to a mindset shift borrowed from Kevin Kelly, to dialing down big ambitions into “little bets” that actually get done. Oh, and some recent boardgame picks!

Host: David GardnerProducer: Bart Shannon
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Some truths are too good to say only once. This week, David re-blasts five timelessly powerful ideas from the past—about identity, investing, serenity, frameworks, and questioning—and brings them together in a fresh 2026 mix. One quietly powerful idea runs underneath: What you do, repeatedly, becomes who you are.Along the way:


A single line that might rewire how you think about your own habits (and your portfolio)

A Silicon Valley inversion that flips investing on its head

Shakespeare, serenely out-investing most of Wall Street

Why Warren Buffett shouldn’t have bought Amazon—and why that’s good news

And a modern upgrade to “question everything” for the age we’re actually living in


Companies mentioned: AMZN, CMG, ISRG, MELI, NFLX, NVDA, SHOP, TSLAHost: David GardnerProducer: Bart Shannon
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