How I Invest with David Weisburd

Why do the people who build the most meaningful things almost always choose the hardest path and what does that unlock in the long run? In this episode, I talk with Larsen Jensen, Founding General Partner of Harpoon Ventures, about why deliberately choosing difficult problems builds the resilience, clarity, and long-term edge required to create category-defining companies. Larsen shares lessons from his time as an Olympic medalist and Navy SEAL, how those experiences shaped his investing philosophy, and why venture capital is ultimately a power-law game driven by rare outliers. We explore how founders develop mental toughness, how conviction is formed under uncertainty, and why great investors learn to trust teams more than models.

What if the biggest barrier to earning returns in alternatives isn’t access, fees, or performance but friction, complexity, and behavior? In this episode, I talk with Brett Hillard, Founder and CEO of GLASFunds, about why infrastructure matters more than selection in alternative investing. Brett explains how GLASFunds helps wealth managers implement alternatives at scale, why K-1 friction keeps investors out of high-return asset classes, and how thoughtful design around vintages, liquidity, and reporting can dramatically improve long-term outcomes. We also explore why “alternatives” is an overused label, how to build portfolios across vintages, and why illiquidity can actually protect investors from themselves.

What if managing your own capital and not outsourcing it is the highest-return investment decision you can make? In this episode, I talk with Alex Tonelli, Co-Founder of Endurance, about what changes when entrepreneurs manage their own money with the same first-principles thinking they use to build companies. Alex explains how Endurance evolved from a startup holding company into a highly structured family investment office, why principal-driven capital behaves differently than institutional capital, and how disciplined portfolio construction, vintage diversification, and contrarian thinking create durable long-term returns. We also explore why institutions systematically underperform their opportunity set — and how to avoid the behavioral traps that cause it.

What kind of entrepreneur decides to bring back extinct species and why might that become one of the most important businesses of our lifetime? In this episode, I talk with Ben Lamm, Co-Founder and CEO of Colossal Biosciences, about why de-extinction is not science fiction but an engineering problem — and how solving it is creating breakthrough technologies across biology, conservation, and medicine. Ben shares how Colossal evolved from a bold idea into a multi-billion-dollar platform, why mammoths, dire wolves, and dodos became cultural gateways into serious science, and how mission-driven companies can attract talent, capital, and public imagination at once.

How do you spot a frontier-tech company before it becomes obvious and why is being early so much harder than being right? In this episode, I talk with Jonathan Lacoste, Founder and General Partner of Space VC, about investing at the moment when ideas are still non-consensus. Jonathan explains the difference between deep tech and frontier tech, why founder migration is the strongest signal of emerging opportunity, and how pre-seed investors create alpha by backing contrarian founders before markets agree. We discuss how grit and mission outperform IQ, why concentration beats diversification in early-stage portfolios, and how patience compounds into an edge over time.