Analysis of 13F Holdings of Seven Major Funds: What Are Buffett, Duan Yongping, Li Lu, and Dan Bin Thinking?
A summary of Q2 2026 13F filings from seven major funds (Berkshire Hathaway, Duquesne Family Office, H&H International Investment, Himalaya Capital, ARK Investment, Oriental Harbor Investment Master Fund, Situational Awareness LP) reveals AI remains the central investment theme, with significant capital reallocation within the sector.
Berkshire Hathaway, under Greg Abel, made its largest net stock purchases in years, heavily increasing its stake in Alphabet, signaling a strategic tilt towards tech while maintaining core holdings in consumer and financial stocks. Duquesne Family Office (Stanley Druckenmiller) rotated within semiconductors, selling Micron, Broadcom, and Intel but adding to positions in TSMC, STMicroelectronics, and AMD, while also reinvesting in cloud giants Alphabet and Amazon and cautiously re-entering Chinese tech via Baidu. H&H International Investment (Duan Yongping) and Himalaya Capital (Li Lu) both significantly increased their stakes in PDD, with Li Lu also concentrating his portfolio by selling out of several financial and energy holdings to focus on core positions like Alphabet and Berkshire. H&H also took profits from high-flying AI/tech names like Nvidia and Google, viewing the moves as valuation adjustments rather than a loss of conviction.
ARK Investment (Cathie Wood) aggressively bought SpaceX upon its IPO and continued hunting for disruptive innovation across AI, energy, and biotech, while reducing its Tesla holding. Oriental Harbor Investment Master Fund (Dan Bin) executed a dramatic shift towards AI hardware, launching major new positions in Intel, SanDisk, AMD, and others while selling down software/platform holdings like Google and clearing out consumer names Apple and Tesla. Situational Awareness LP's filing, reflecting pre-liquidation positions, showed a story of missed hedging opportunities leading to significant losses.
The consensus is that AI growth is continuing, but capital is actively rotating to identify the next profit centers within the value chain—from semiconductors and infrastructure to eventual commercialization. The filings, while lagging, offer a snapshot of how sophisticated investors are positioning for AI's next phase.
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