Key Takeaways
- • Tiger Global Management reduced its Microsoft stake by 15.8% to 5.47 million shares (valued at $2.6 billion) in Q4 2025, while trimming Amazon by 9.35% to 10 million shares ($2.3 billion) and cutting its Nvidia position, signaling reduced conviction in AI mega-cap valuations.
- • Adage Capital Partners and other major hedge funds executed similar reductions in "Magnificent 7" technology stocks during the fourth quarter, reflecting growing investor skepticism about stretched valuations and uncertain returns on massive AI infrastructure spending.
- • Berkshire Hathaway divested 77% of its 10-million-share Amazon stake and reduced Apple holdings by 4% in Q4 2025, though Apple remained its largest position at $62 billion—demonstrating portfolio rebalancing across mega-cap technology despite continued core positions.
- • The coordinated trimming by institutional investors comes amid concerns that valuations of AI-dominant companies (Microsoft, Nvidia, Amazon, Meta, and Apple) have become detached from fundamentals and that capital expenditure on AI infrastructure may fail to deliver proportionate returns.
- • Despite reductions, Tiger Global and peer institutions continue to maintain substantial positions in these stocks, indicating a recalibration rather than wholesale exit from the technology sector.
Summary
Major institutional investors including Tiger Global Management and Adage Capital Partners trimmed their stakes in artificial intelligence-focused technology giants during the fourth quarter of 2025, according to Securities and Exchange Commission 13-F quarterly filings released on February 17, 2026. The moves signal emerging skepticism among sophisticated investors regarding valuations in the "Magnificent 7" cohort—a group that includes Nvidia, Microsoft, Amazon, Meta, and Apple.
Tiger Global reduced its Microsoft position by 15.8%, cutting holdings from 6.5 million shares as of September 30, 2025, to 5.47 million shares by year-end. The stake retained a market value of $2.6 billion, keeping Microsoft among Tiger Global's largest holdings. The fund also executed a 9.35% reduction in Amazon, bringing its year-end position to 10 million shares valued at $2.3 billion, and trimmed its Nvidia holdings, which remained valued at $2.1 billion. These reductions occurred alongside broader institutional repositioning, as peers including Adage Capital implemented comparable cuts across the same technology names.
The timing of these reductions reflects investor concerns about two interconnected dynamics: the extent to which current valuations in major AI-linked companies already price in future growth and profitability, and whether the substantial capital expenditures these firms are committing to AI infrastructure will generate sufficient returns to justify their elevated valuations. Despite the reductions, these stocks remain core holdings for most institutional managers, underscoring that the repositioning represents tactical rebalancing rather than conviction-driven exits.
Berkshire Hathaway, the investment conglomerate, executed more aggressive reductions during the same period, selling 77% of its Amazon stake (reducing its position from 10 million shares) and trimming Apple by 4%. Apple nonetheless remained Berkshire's largest holding at $62 billion in value, demonstrating that even substantial sales leave these mega-cap technology positions as portfolio anchors.
The SEC filings provide rare transparency into how leading institutional investors are navigating the aftermath of the technology sector's strong recent performance and signal a shift toward more cautious positioning as investors reassess AI investment theses and valuation discipline.
Tiger Global reduced its Microsoft position by 15.8%, cutting holdings from 6.5 million shares as of September 30, 2025, to 5.47 million shares by year-end. The stake retained a market value of $2.6 billion, keeping Microsoft among Tiger Global's largest holdings. The fund also executed a 9.35% reduction in Amazon, bringing its year-end position to 10 million shares valued at $2.3 billion, and trimmed its Nvidia holdings, which remained valued at $2.1 billion. These reductions occurred alongside broader institutional repositioning, as peers including Adage Capital implemented comparable cuts across the same technology names.
The timing of these reductions reflects investor concerns about two interconnected dynamics: the extent to which current valuations in major AI-linked companies already price in future growth and profitability, and whether the substantial capital expenditures these firms are committing to AI infrastructure will generate sufficient returns to justify their elevated valuations. Despite the reductions, these stocks remain core holdings for most institutional managers, underscoring that the repositioning represents tactical rebalancing rather than conviction-driven exits.
Berkshire Hathaway, the investment conglomerate, executed more aggressive reductions during the same period, selling 77% of its Amazon stake (reducing its position from 10 million shares) and trimming Apple by 4%. Apple nonetheless remained Berkshire's largest holding at $62 billion in value, demonstrating that even substantial sales leave these mega-cap technology positions as portfolio anchors.
The SEC filings provide rare transparency into how leading institutional investors are navigating the aftermath of the technology sector's strong recent performance and signal a shift toward more cautious positioning as investors reassess AI investment theses and valuation discipline.
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