Recent 13F disclosures reveal where Wall Street’s most influential investors deployed capital during Q1 2026. These regulatory filings arrive with a mandatory delay, capturing portfolio positions as they stood on March 31, 2026.
While these documents don’t disclose current holdings, they provide valuable insight into where institutional capital was flowing just months ago.
This quarter’s investment patterns highlighted several dominant trends: artificial intelligence infrastructure, cloud services, transportation recovery, online commerce, and platform economics. Here’s an in-depth look at the five most notable stock positions.
Pershing Square, led by Bill Ackman, established an entirely new Microsoft position throughout Q1. Reuters noted that Ackman capitalized on the stock’s pullback, viewing the corrected valuation as compelling.
This strategic entry coincided with Pershing Square’s complete divestiture of Alphabet shares. The simultaneous moves represent a deliberate reallocation—shifting from one AI and cloud infrastructure leader to another.
Microsoft offers extensive exposure to Azure cloud services, Microsoft 365 Copilot integration, GitHub developer tools, comprehensive enterprise solutions, and its strategic OpenAI collaboration. These elements form the core of the AI narrative that continues to captivate investors throughout 2026.
Conversely, Berkshire Hathaway pursued the opposite strategy. The Omaha-based conglomerate dramatically escalated its Alphabet position, expanding from approximately 18 million shares to 58 million shares. Barron’s valued this holding at around $16.6 billion.
This substantial investment signals strong conviction in Google Search dominance, YouTube’s advertising power, expanding cloud services, and Alphabet’s AI infrastructure. The diverging strategies demonstrate that even sophisticated investors disagree on which AI powerhouse offers superior returns—though both Microsoft and Alphabet remain central to that conversation.
Among the quarter’s most unexpected developments, Berkshire Hathaway initiated a substantial Delta Air Lines position. Reuters valued the stake at approximately $2.65 billion, while Barron’s estimated it closer to $3 billion.
This investment carries particular significance given Berkshire’s post-pandemic withdrawal from airline investments. A renewed Delta position represents a contrarian bet within an industry confronting elevated fuel expenses and macroeconomic headwinds.
Amazon drew investment from multiple prominent funds. David Tepper’s Appaloosa Management acquired 2.1 million Amazon shares, elevating it to the fund’s top position at approximately $900 million. Pershing Square simultaneously increased its Amazon stake by 19%.
Meanwhile, Berkshire reduced its Amazon holdings during the identical timeframe. Nevertheless, continued accumulation by Tepper and Ackman establishes Amazon as one of the quarter’s most scrutinized positions.
Uber completed the five-stock roster. Appaloosa purchased roughly 4.5 million Uber shares, expanding its position to approximately $455 million. Pershing Square maintained Uber as a substantial portfolio component.
Uber appeals to institutional investors through its diversified revenue streams spanning ride-sharing, food delivery, advertising services, and strengthening profitability metrics. While not classified as traditional technology, it exemplifies the platform-business architecture that institutional funds increasingly favor.
Collectively, these five equities—Microsoft, Alphabet, Delta, Amazon, and Uber—illustrate what elite investors prioritized entering 2026: established business quality, artificial intelligence exposure, and platform-driven expansion.
The post Wall Street’s Elite Quietly Accumulated These 5 Stocks in Q1 2026 – Microsoft (MSFT), Alphabet (GOOGL) Top the List appeared first on Blockonomi.
