Finance
NewsOnScale Staff
October 5, 2026
When the names Meta, Google, Microsoft, and Oracle appear in federal complaints and antitrust investigations, attention naturally falls on the founders and CEOs. But the largest institutional shareholders of all four companies simultaneously are two firms most Americans rarely think about: BlackRock and Vanguard.
According to SEC Form 13F filings for the quarter ended March 31, 2026, BlackRock holds:
Microsoft: approximately $219.7 billion Alphabet/Google: approximately $128.5 billion Meta: approximately $96.6 billion Oracle: approximately $21 billion
Vanguard holds comparable or larger stakes in each of the same companies and is the largest institutional shareholder of Meta, Microsoft, and Alphabet.
Combined, BlackRock and Vanguard hold well over half a trillion dollars across just these four companies. Add Amazon, which is connected to Anthropic through a $4 billion investment currently under FTC investigation, and the number grows further.
This is not a conspiracy theory. It is publicly disclosed in SEC filings that any investor can read. Institutional asset managers like BlackRock and Vanguard hold large stakes across the entire market because they manage index funds and ETFs that track broad market indexes. When Meta, Google, Microsoft, and Oracle are large components of the S&P 500, every index fund that tracks the S&P 500 holds them simultaneously.
What it means practically: the same two firms vote massive blocks of shares at shareholder meetings for all four companies. They can influence board composition, executive compensation, and corporate governance across all of them simultaneously. They don't run day-to-day operations, but their influence at the board level is real and documented.
The FTC is currently investigating whether AI investment partnerships between Microsoft, Google, Amazon, Anthropic, and OpenAI constitute anticompetitive behavior. The question of whether shared institutional ownership across the same companies creates additional conflicts of interest is one the FTC has not yet addressed.
The stakes are in the public record. The question of what they mean for competition and accountability is worth asking.
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