Key Takeaways
- • Tiger Global reduced its Microsoft stake by 16% to 5.47 million shares (valued at $2.6 billion) in Q4 2025, while trimming Amazon holdings by 9.35% to 10 million shares ($2.3 billion) and cutting its Nvidia position, signaling investor caution on "Magnificent 7" valuations.
- • Adage Capital Partners joined major hedge funds in paring exposure to AI-focused mega-cap tech stocks during the fourth quarter of 2025, reflecting broader concerns about stretched valuations in the cohort.
- • Berkshire Hathaway executed significantly more aggressive reductions, divesting 77% of its 10-million-share Amazon stake and 4% of Apple holdings in Q4 2025, though Apple remained its largest position at $62 billion.
- • SEC 13-F filings reveal institutional investors are recalibrating "Magnificent 7" exposure—which includes Nvidia, Amazon, Microsoft, Meta, and Apple—amid concerns that massive AI infrastructure spending may fail to generate sufficient returns.
- • Despite reductions, Tiger Global's trimmed positions remain among its largest holdings, indicating these stocks retain core portfolio weight even as managers reduce near-term risk.
Summary
Major hedge funds Tiger Global Management and Adage Capital Partners trimmed significant stakes in artificial intelligence-focused technology giants during the fourth quarter of 2025, according to U.S. Securities and Exchange Commission 13-F quarterly filings released February 17. The moves underscore growing institutional caution regarding valuations in the "Magnificent 7"—a cohort comprising Nvidia, Amazon, Microsoft, Meta, and Apple—after a substantial rally in recent years.
Tiger Global cut its Microsoft holding by approximately 16%, reducing the position from 6.5 million shares as of September 30, 2025, to 5.47 million shares by year-end, bringing the stake to $2.6 billion in value. The hedge fund also trimmed its Amazon position by 9.35%, bringing the holding to 10 million shares valued at $2.3 billion, and reduced its Nvidia exposure, which stood at $2.1 billion. Despite these reductions, all three positions remain among Tiger Global's largest holdings, reflecting the outsized influence of mega-cap AI stocks in hedge fund portfolios.
The pullback among sophisticated investors reflects heightened concerns about the sustainability of valuations in the AI-focused technology sector. Many institutional managers worry that the enormous capital commitments these companies are making toward AI infrastructure and development may not generate returns commensurate with current market valuations. The timing of these reductions follows a multi-year surge in "Magnificent 7" equities that significantly boosted investor returns.
Berkshire Hathaway executed more aggressive reductions, selling 77% of its 10-million-share Amazon stake and 4% of Apple holdings during Q4 2025. Despite these significant sales, Apple remained Berkshire's largest position, valued at $62 billion. The conglomerate's moves, implemented before Warren Buffett's transition from day-to-day oversight, aligned with the broader hedge fund repositioning evident in other major institutional filings.
The SEC disclosures reveal a coordinated reassessment among elite institutional investors of their exposure to the technology sector's highest-growth and most richly valued segments, even as these positions continue to anchor many portfolio allocations.
Tiger Global cut its Microsoft holding by approximately 16%, reducing the position from 6.5 million shares as of September 30, 2025, to 5.47 million shares by year-end, bringing the stake to $2.6 billion in value. The hedge fund also trimmed its Amazon position by 9.35%, bringing the holding to 10 million shares valued at $2.3 billion, and reduced its Nvidia exposure, which stood at $2.1 billion. Despite these reductions, all three positions remain among Tiger Global's largest holdings, reflecting the outsized influence of mega-cap AI stocks in hedge fund portfolios.
The pullback among sophisticated investors reflects heightened concerns about the sustainability of valuations in the AI-focused technology sector. Many institutional managers worry that the enormous capital commitments these companies are making toward AI infrastructure and development may not generate returns commensurate with current market valuations. The timing of these reductions follows a multi-year surge in "Magnificent 7" equities that significantly boosted investor returns.
Berkshire Hathaway executed more aggressive reductions, selling 77% of its 10-million-share Amazon stake and 4% of Apple holdings during Q4 2025. Despite these significant sales, Apple remained Berkshire's largest position, valued at $62 billion. The conglomerate's moves, implemented before Warren Buffett's transition from day-to-day oversight, aligned with the broader hedge fund repositioning evident in other major institutional filings.
The SEC disclosures reveal a coordinated reassessment among elite institutional investors of their exposure to the technology sector's highest-growth and most richly valued segments, even as these positions continue to anchor many portfolio allocations.
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