
The Secular Plateau | Chris Bloomstran on Why We May Be at Peak Valuations
From Excess Returns by Excess Returns
April 22, 2026 · 1h 9m · Season 1 · Episode 441
About this episode
Chris Bloomstran discusses market concentration, AI capital spending, and the risks facing equity investors, exploring the concept of a secular valuation plateau.
This episode features Chris Bloomstran of Semper Augustus discussing market concentration, AI capital spending, Berkshire Hathaway, and the risks facing today’s equity investors. The conversation explores whether we are at a secular valuation plateau, how AI investment may reshape returns, and why passive investors may face more risk than they realize. Semper Augustus Investments https://www.semperaugustus.com Topics covered: Why extreme market concentration in the Mag 7 may create long-term risks The concept of a “secular plateau” vs a market peak How AI capex could become a classic capital cycle with poor returns Why hyperscaler spending may not translate into shareholder profits The hidden risks of leverage both on and off balance sheets Why buy-and-hold investing is harder than it seems in practice How valuation discipline drives long-term investment outcomes Berkshire Hathaway’s cash position and what it signals about opportunity Why capital allocation matters more than growth narratives Lessons from past bubbles including railroads, fiber, and the Nifty Fifty The fragility of life and how it shapes investing priorities The importance of independent thinking in the age of AI…
People in this episode
Guest: Chris Bloomstran
Topics covered
- market concentration
- AI capital spending
- secular valuation plateau
- risks for equity investors
- buy-and-hold investing
- capital allocation
- independent thinking
Keywords
- market risks
- AI investment
- passive investing
- valuation discipline
- leverage risks
- capital cycle
- investment outcomes
Mentioned in this episode
Organizations: Semper Augustus, Berkshire Hathaway, Semper Augustus Investments, Mag 7
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