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Rule Breaker Investing

March 2026 Mailbag: Habits, Hacks & “Boom”

Rule Breaker Investing

The Motley Fool

Business, Investing

4.4959 Ratings

🗓️ 25 March 2026

⏱️ 35 minutes

🧾️ Download transcript

Summary

March Madness may be over, but the Mailbag is just beginning—and as always, you’re the star of the show. This month we hear from listeners who tracked the data on our Market Cap Game Show strategies (does “always disagree”… really work?), revisit a thoughtful challenge from Professor Jason Corso on whether Rule Breaker Investing is built on habits, recipes, or something closer to an algorithm, pick up a clever Google News hack that lets you see the world through another country’s headlines, and yes… return to Pet Peeves territory with a “Bamm!” vs. “Boom!” breakdown of locker room acoustics. Along the way, we touch on how we think, how we learn, and how we behave—in markets and in life.And we close with one Fool’s simple question: Does the Snap Test apply… beyond stocks? Sign up for The Motley Fool’s Breakfast News here: ⁠⁠⁠⁠⁠⁠www.fool.com/breakfastnews⁠⁠⁠⁠⁠⁠ Order David’s Rule Breaker Investing book here: ⁠⁠⁠⁠⁠⁠https://www.amazon.com/gp/product/1804091219/⁠⁠⁠ Companies mentioned: AXON, DIS Host: David GardnerProducer: Bart Shannon Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0

What do you do after the madness is over?

0:04.0

Well, college basketball fans in the United States of America don't have to ask that question yet,

0:09.2

but rule breaker investing fans, especially your host this week,

0:13.3

I'm sort of left a little bit wondering what's next.

0:16.7

I had so much fun now with two-time Market Cap Game Show world champion Emily Flippen and her competitors this month.

0:24.9

I hope you did too.

0:26.9

And yet, yeah, a few of you still wrote in.

0:30.0

We've got a mailbag.

0:31.4

It's the March 2026 mailbag only on this week's Rule Breaker Investing.

0:41.5

It's the Rule Breaker Invest investing podcast with motley full co-founder david gardener welcome back to rule breaker investing what a month it was you know that

0:51.8

final world championship last week i mean spoiler, if you haven't listened to it yet. And really, the big news is not a spoiler. Emily won. Emily won very handily. She is very good at the market cap game show. And it's always a delight for me to be around and witnessing people who are very good at the things

1:12.9

they're good at.

1:13.9

And Emily Flippin is good at a number of things that I'm aware of, and one of them is the Market Cap game show.

1:20.3

So I hope it's not really a spoiler to say, if you were planning on listening and you hadn't yet, that Emily will win the game.

1:27.3

But the main purpose of

1:29.2

the game, as I think we all know by now, is for each of us to learn and get better seeing the big

1:36.0

picture of the stock market. And my favorite way to boil down a big stock market into little

1:42.2

pictures is to know, study the market caps, the market

1:46.0

capitalizations of the companies that make up the market.

1:49.4

It's fascinating to me to note, for example, that Marriott International is about six

1:54.1

times larger than high at hotels.

1:57.0

One wouldn't necessarily know that unless one looked at the stock market.

...

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