Key Takeaways
- Pershing Square initiated a substantial Microsoft position following a valuation decline, while simultaneously divesting its entire Alphabet holding
- Berkshire Hathaway dramatically expanded its Alphabet ownership from 18 million shares to 58 million shares, creating a position worth approximately $16.6 billion
- In a stunning reversal, Berkshire re-entered the airline sector by establishing a Delta Air Lines position valued between $2.65 billion and $3 billion
- Both Appaloosa and Pershing Square increased their Amazon holdings, even as Berkshire reduced its stake
- Uber attracted significant investment from Appaloosa and Pershing Square, with Appaloosa’s stake reaching approximately $455 million
The investment community’s most prominent players executed significant portfolio adjustments during Q1 2026, newly released 13F regulatory documents reveal. These mandatory disclosures capture institutional holdings at the end of March 2026, though they’re published weeks later, meaning they represent historical rather than real-time positions.
The strategic decisions underscore ongoing institutional enthusiasm for artificial intelligence infrastructure, cloud technology platforms, digital commerce, and network-effect businesses.
Pershing Square Pivots to Microsoft While Berkshire Amplifies Alphabet Bet
Bill Ackman’s Pershing Square Capital Management established a fresh Microsoft stake during the opening quarter of 2026. The activist investor capitalized on share price weakness, viewing the tech giant’s valuation as compelling, Reuters sources indicated.
Concurrently, Pershing Square completely liquidated its Alphabet holdings. This represents a clear substitution trade between two dominant forces in artificial intelligence and cloud infrastructure.
Microsoft delivers extensive AI exposure through Azure cloud services, its strategic OpenAI collaboration, GitHub’s developer platform, and the Microsoft 365 Copilot productivity suite. These elements form the core of the AI investment narrative throughout 2026.
Berkshire Hathaway executed the inverse strategy. Warren Buffett’s conglomerate multiplied its Alphabet position more than threefold, expanding from approximately 18 million shares to 58 million shares. Barron’s estimated the position’s value at $16.6 billion.
This massive accumulation signals strong conviction in Google Search’s durability, YouTube’s monetization potential, and Alphabet’s cloud computing and AI capabilities. The contrasting approaches demonstrate that even sophisticated institutional investors maintain divergent views on which AI powerhouse offers superior returns.
Berkshire Makes Unexpected Airline Comeback Through Delta Investment
Among the quarter’s most surprising developments, Berkshire Hathaway established a fresh Delta Air Lines position valued at approximately $2.65 billion per Reuters, with Barron’s reporting figures approaching $3 billion.
This represents a notable strategic pivot. Berkshire had abandoned airline investments following the pandemic’s devastating impact on the travel industry. Re-entering this sector through Delta constitutes a bold contrarian position amid elevated fuel expenses and macroeconomic headwinds affecting consumer travel demand.
Delta maintains its position as America’s largest airline by revenue and has strategically emphasized premium cabin products and loyalty ecosystem development to protect profit margins.
Multiple Institutional Investors Accumulate Amazon and Uber Shares
Amazon drew capital from multiple prominent investment firms. David Tepper’s Appaloosa Management added 2.1 million Amazon shares, elevating it to the fund’s top holding with an approximate $900 million value. Simultaneously, Pershing Square expanded its Amazon stake by 19%.
Berkshire moved in the opposite direction, reducing its Amazon exposure during this period. Nevertheless, the concentrated buying activity from Tepper and Ackman ensures Amazon remains among Q1’s most significant institutional moves.
Uber completed the quintet of heavily purchased stocks. Appaloosa acquired roughly 4.5 million additional shares, growing its total Uber position to approximately $455 million. Pershing Square similarly maintained Uber as a core portfolio component.
Uber attracts institutional capital due to its diversified business model spanning ride-sharing, meal delivery services, advertising monetization, and steadily expanding profitability.
Collectively, these five companies — Microsoft, Alphabet, Delta, Amazon, and Uber — illuminate where sophisticated capital was being strategically allocated at 2026’s outset.
Get 3 Free Stock Ebooks
Discover top-performing stocks in AI, Crypto, and Technology with expert analysis.
- Top 10 AI Stocks - Leading AI companies
- Top 10 Crypto Stocks - Blockchain leaders
- Top 10 Tech Stocks - Tech giants
