Chris Davis and Robert Hagstrom explore the tension between holding great businesses and keeping a winning stock from becoming too much of a portfolio risk. Why do two investors who believe in letting winners compound also use 10% position limits?
On this episode of 100 Year Thinkers, Chris Davis of Davis Funds and Robert Hagstrom of EquityCompass join Matt Zeigler and Bogumil Baranowski to discuss position sizing, selling mistakes, index concentration and the cost of growth. From Chris Davis’s experience selling Costco to the debate over who will capture AI’s economic benefits, they examine what it takes to hold a business through uncertainty without ignoring risk. Stay for Matt and Bogumil’s closing discussion of the lessons for investors.

Available now on Excess Returns Podcast and Talking Billions. 🎧 I’m excited to share this episode with you—it’s reposted here with permission and blessing from the Excess Returns team. Don’t miss it! And follow their work, links below.
Topics covered:

Why selling a genuinely great business can be an investor’s most expensive mistake
How client behavior and fund constraints influence 10% position limits
Chris Davis’s concerns about index concentration, momentum and future IPO incentives
Robert Hagstrom on trimming positions as the margin of safety shrinks
The bull-case pre-mortem: asking what could make selling today a mistake
What Chris Davis missed about Costco’s growth and ability to adapt
Why identical earnings growth can produce different shareholder returns
Whether AI spending builds durable pricing power or delivers more value to users
How customer trust and restraint on margins can strengthen competitive advantages
Balance sheets, circular financing and the humility required to size a position

Chris Davis / Davis Funds https://davisfunds.com/

Robert Hagstrom / EquityCompass / https://www.equitycompass.com/

Chapters:
00:00 Holding great businesses and the case for position limits
06:47 Robert Hagstrom on concentration and client risk
12:40 Index concentration, momentum and IPO incentives
19:03 Trimming winners, margin of safety and the Costco lesson
30:09 Valuation, return on capital and the cost of growth
36:01 Is AI’s capital spending cycle temporary?
40:10 AI pricing power: builders versus users
45:35 Competitive advantage, margins and customer trust
51:45 Balance sheets and circular AI financing
55:53 Evaluating the AI investment cycle
01:00:23 Matt and Bogumil’s takeaways: position sizing and AI
01:10:25 Being an AI user versus an AI investor
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Information presented is for educational purposes only and does not intend to make an offer or solicitation for the sale or purchase of any specific securities, investments, or investment strategies. Investments involve risk and unless otherwise stated, are not guaranteed.

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