WalkingBread
A blog that turns complex data into simple, visual stories. Follow along as we break down 13F filings, market trends, and economic shifts — one chart at a time.
A blog that turns complex data into simple, visual stories. Follow along as we break down 13F filings, market trends, and economic shifts — one chart at a time.
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Five companies account for nearly 70% of the investment giant’s reported equity holdings At first glance, Berkshire Hathaway’s latest regulatory filing appears to show a reasonably broad collection of public equities. Look past the number of individual securities, however, and a much more concentrated portfolio emerges. In its
AI Owns the Top of the Table, but the Rest of the Market Has Not Disappeared NVIDIA, Apple, Microsoft and the wider AI ecosystem account for much of the value within the top 50. Look further down, however, and institutional exposure extends across banks, healthcare, energy, telecommunications and consumer defensive.
Berkshire Hathaway’s $263B portfolio is more concentrated than most investors realize. With over 65% invested in just five companies, this breakdown reveals where Buffett and his successor are placing their highest-conviction bets in 2026.
The latest 13F data reveals a clear pattern: institutional investors are doubling down on mega-cap tech and AI leaders, while quietly hedging with defensive. This isn’t rotation — it’s conviction.
If you thought the AI trade was crowded in 2025, the latest 13F data suggests institutions didn’t rotate—they concentrated even further. Between December 2025 and February 2026, institutional portfolios told a very clear story: stick with the winners. NVIDIA didn’t just top the list—it dominated it.
Institutional investors didn’t spread their bets in late 2025 — they concentrated them. This analysis of 13F filings reveals where trillions of dollars flowed, with AI giants like Nvidia, Microsoft, and Apple dominating portfolios while defensive stocks quietly anchored risk.