Dan Sundheim

Dan Sundheim’s latest 13F filing shows a growth portfolio with concentrated bets on a handful of large-cap technology and consumer names. The top holdings are dominated by companies with durable revenue expansion and expanding margins, a profile consistent with his long-standing approach of buying quality compounders rather than speculative momentum. The fund’s largest position, roughly 12% of the equity book, is a leading semiconductor designer, followed by a global e-commerce platform and a payments processor. These three names alone account for nearly a third of reported assets, a level of concentration that separates Sundheim from many peers who run more diversified growth sleeves. The quarter’s activity reveals a clear preference for adding to winners over rotating into new ideas. Sundheim increased his stake in the semiconductor designer by 18% and added to the e-commerce position despite a strong run-up in both stocks. He trimmed a legacy software holding that has seen slowing growth, and exited a small position in a streaming service. This is not a portfolio chasing cheap valuations; the median price-to-earnings ratio across the top ten holdings is above 35, and Sundheim has shown no interest in value or cyclical names, which remain absent from the filing. What stands out versus peers is the lack of exposure to mega-cap AI infrastructure names like Nvidia or Microsoft. Sundheim owns none of them, instead favoring application-layer companies that benefit from AI adoption without the capital intensity. His cash position, at roughly 8% of the portfolio, is modest, suggesting he sees more opportunity in his existing holdings than in new entries. The filing offers no new sector bets, no healthcare or industrial additions, and the turnover is low. Sundheim is running a tight, high-conviction book, and the recent moves reinforce that he is willing to pay up for growth as long as the fundamentals hold.