Investing Billions - E234: Three Rules Every Great Investor Lives and Dies By

Episode Date: November 1, 2025

What separates the good investors from the great ones? In this 2nd solo episode, David Weisburd shares the three rules that every world-class investor follows—rules that have nothing to do with IQ, luck, or access, and everything to do with how they think, use time, and define their game. Drawing on hundreds of private conversations with elite fund managers, David breaks down why consistency is overrated, how to buy back your time, and why clarity about your “game” might be the biggest competitive edge of all. If you’re an investor, founder, or builder looking to sharpen your mental model, this episode offers a rare inside look at the mindset of the best in the business.

Today, I want to talk about three things that the very best investors care and do not care about. One is cognitive dissonance. The best investors do not care about being consistent. In fact, the very best investors will contradict themselves in the same sentence, and they are 100% comfortable with this. Why? The best investors understand that beliefs and thoughts are forms of heuristics that should not be taken literally, should only be taken figuratively.

In the world of investing, things change every day in a way that's quite profound, especially today with AI, you see a lot of truisms in the market changing on a daily basis. What's the opposite of being focused on being logically consistent? The opposite is being focused on results. Second thing that the very top investors do is they guard their time like a hawk. They do not let anybody infringe upon their time, and they also buy back their time. Oftentimes you hear people say, I respond to every email. I have never in my entire life, now speaking to over 1,000 investors on off the record,

found this to be true. If this confuses you, that's because it's a form of virtue signaling. There's no investor in the world that is even humanly capable of responding to every email, let alone thinks that this is a good idea. If you've been considering future straightings, now might be the time to take a closer look. The futures market has seen increased activity recently and plus 500 futures offers a straightforward entry point. The platform provides access to major instruments, including the S&P 500, NASDAQ, Bitcoin, natural gas, and other key markets across equity indices, energy, metals, Forex, and crypto. Their interface is designed for accessibility.

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Hard your time like it is your business because time is upstream of the productivity of your business. In other words, if you have more time, you will get more revenue. If you have less time, you will have less revenue. Another thing that the very top investors do is they're extremely, extremely specific in the game that they're playing. You'll oftentimes hear this in quite boring ways, lower middle market, PE firm, buying between $10 and $20 million ebit.com companies or $50 to $100 million revenue companies. Although this is extremely boring, this is a very useful meme because that's when they know how to filter out opportunities that are both coming to them on a day-to-day basis, that are coming to their team on day-day basis. even coming to their EAs on the data business, but perhaps most importantly,

they are very clear to the outside world what kind of opportunities they want to see. It's very clear when you say, I want a company with $10 to $20 million in Ibetta, whether you want an AI Series D. It's very clear the answer is no. It's very clear when you say that I want a company with $10 to $20 million in EBITDA

that you don't want a company with $5 million in EBITDA. This crystallization of the game that they're playing serves as both a protection on their time as well as an acceleration on people getting them what's in their eyebox. Those are just a couple examples. If you enjoy this podcast, please share with a friend. If not, tell me, want to know either way. Thanks for listening.

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