Microsoft Stock Sees Contrasting Moves as Gates Foundation Exits While Ackman Builds Major Position

Major Institutional Moves Signal Different Microsoft Strategies

Two prominent investment figures made headlines last Friday with dramatically different Microsoft (NASDAQ:MSFT) strategies, revealing a fascinating divide in how institutional investors view the tech giant's future prospects.

The Bill & Melinda Gates Foundation Trust completed its final exit from Microsoft, unloading 7.7 million shares worth approximately $3.2 billion during the first quarter. Meanwhile, Bill Ackman's Pershing Square Capital Management disclosed a substantial new stake of roughly 5.65 million shares valued at around $2.09 billion at quarter-end.

Foundation's Strategic Departure Driven by Philanthropic Timeline

The Gates Foundation's Microsoft exit represents the conclusion of a systematic divestiture spanning multiple quarters. The Trust's holdings declined from approximately 28.5 million shares at the end of Q1 2025 to 7.7 million by year-end, before reaching zero this quarter.

This selling pattern aligns with the foundation's announced 2045 sunset timeline, which requires liquidating assets to fund approximately $200 billion in charitable initiatives over the next two decades. The systematic nature of these sales suggests operational necessity rather than investment pessimism.

Ackman's Contrarian Entry During Market Uncertainty

Pershing Square initiated its Microsoft accumulation in February, following the company's fiscal Q2 2026 earnings report that triggered significant stock weakness. The hedge fund continued purchasing shares even as Microsoft traded substantially below its July 2025 record highs.

Two primary concerns had pressured Microsoft's valuation heading into Ackman's buying period. First, Copilot adoption rates disappointed investors, with only 15 million of Microsoft's 450 million paid Microsoft 365 commercial seats converting to paying Copilot users. Independent data showed Copilot's market share declining from 18.8% in July 2025 to 11.5% by January 2026.

Second, Microsoft's massive $190 billion capital expenditure commitment for 2026 raised questions about return on investment among some market participants.

Ackman's Investment Thesis Focuses on Undervalued Assets

Ackman's analysis suggests the market has mispriced Microsoft's core business strength against AI-related uncertainties. He points to Azure's 39% constant-currency revenue growth and Microsoft's AI business reaching a $37 billion annualized run rate with 123% year-over-year growth.

The investor views Microsoft 365 and Azure as generating roughly 70% of the company's profits, with M365's monthly average revenue per user of approximately $20 representing significant value compared to standalone application costs. He characterizes the current $190 billion capex as "growth capex that should drive future revenue generation."

Additionally, Ackman highlights Microsoft's approximately 27% economic stake in OpenAI, valued at roughly $200 billion based on recent funding rounds, representing about 7% of Microsoft's market capitalization.

Strategic Portfolio Rebalancing Reveals Conviction

To fund the Microsoft position, Pershing Square liquidated nearly its entire Alphabet (NASDAQ:GOOG) holdings, reducing Class C shares from over 6.1 million to approximately 312,000 during Q1. The firm also trimmed Class A holdings from around 678,000 shares to 32,000 over the same period.

Ackman clarified that the Google sale wasn't based on negative sentiment toward Alphabet, but rather represented a capital allocation decision given "finite capital base" constraints. Pershing had held Google for three years at an average cost of about $94 per share, with Class C shares trading near $392 when the 13F filing was disclosed.

Market Implications and Valuation Considerations

Ackman acquired Microsoft shares at approximately 21 times forward earnings, which he described as "broadly in line with the market multiple and well below Microsoft's trading average over the last few years."

The contrasting moves highlight different investment time horizons and objectives. While the Gates Foundation's sales reflect predetermined philanthropic commitments, Ackman's entry suggests belief in Microsoft's ability to monetize AI investments and expand Copilot adoption from its current 3% penetration rate among addressable seats.

Looking Ahead

These institutional movements underscore the ongoing debate about Microsoft's AI strategy execution and capital allocation efficiency. The market will likely monitor Copilot adoption metrics and AI revenue conversion rates as key indicators of whether Ackman's optimistic thesis proves correct.

Investors should note that 13F filings represent lagged data and institutional decisions reflect specific portfolio constraints and objectives that may not apply to individual investment situations.