Wall Street Giants Reveal Latest Investment Moves in Q4 2025

Wall Street’s largest institutional investors have disclosed their Q4 2025 investment activity through Form 13F filings, offering a snapshot of major trends in the fourth quarter. These filings show a shift in focus toward artificial intelligence (AI) and media, as well as a reduction in high-valuation tech and metals positions. The data highlights how institutional players are adapting to a rapidly evolving market landscape.

Bill Ackman’s Pershing Square Capital Management is one of the most active names, with new investments in AI and social media giants. The fund added a $2 billion stake in Meta Platforms, positioning it as Ackman’s fourth-largest holding. This move aligns with his broader focus on AI-driven businesses, including Uber Technologies and Alphabet.

Buffett’s Berkshire Hathaway also made strategic adjustments. The conglomerate reduced its Apple and Amazon stakes, trimming them by 75% and 77%, respectively. In contrast, Berkshire added a $351.7 million stake in The New York Times, a move interpreted by many as a reflection of the new leadership under Greg Abel rather than a direct Buffett decision.

Family offices also made notable moves, cutting positions in metals after substantial gains. Vantage Investment Partners, for example, reduced its stake in Southern Copper Corp., while Cercano Management exited its position in SPDR Gold. These actions reflect a shift in strategy as these investors lock in profits from a metals boom driven by supply concerns and geopolitical instability.

Why Did This Happen?

Ackman’s decision to increase exposure to AI is partly driven by the sector’s potential to generate long-term value. The billionaire has identified companies like Meta, Uber, and Alphabet as key beneficiaries of the AI revolution. Meta, in particular, appears undervalued given its strong social media dominance and AI integration in advertising platforms.

Buffett’s trimming of Apple and Amazon may signal concerns over valuation levels in the tech sector. Apple’s 9% return in 2025 paled in comparison to the S&P 500’s 16% gain, raising questions about its growth trajectory. Meanwhile, the New York Times stake highlights a strategic pivot toward media assets with pricing power and brand trust.

How Did Markets React?

Meta’s stock price dipped slightly following the 13F filing but rebounded in after-hours trading. Analysts suggest the move by Ackman provides credibility to Meta’s AI-driven transformation. The New York Times saw a 3.3% after-hours rise after Berkshire’s disclosure, indicating market confidence in the publication’s future growth.

The metals sell-off had a mixed impact. Gold and copper prices dipped in early 2026 but remained above 2024 levels, suggesting investors still view them as valuable assets despite recent profit-taking.

What Are Analysts Watching Next?

Wall Street analysts are now focused on how these investments will perform in 2026. Meta’s ability to convert AI innovations into revenue is a key factor. For Berkshire, analysts are watching whether Greg Abel will continue Buffett’s value investing legacy or shift toward new opportunities.

The metals market remains under scrutiny, particularly as geopolitical tensions persist. Analysts are evaluating whether family offices will return to the sector in 2026 or continue to diversify into tech and media.

The broader market is also watching for more 13F-related movements, especially as other major players like Soros Fund Management and WIT LLC have also made strategic allocations. These filings offer rare insight into the thinking of the world’s most sophisticated investors.