What Microsoft’s 10-Q Says About OpenAI

Buried on page nine of Microsoft’s 10-Q for the quarter ended March 31, 2026 is a paragraph worthy of attention. Why? What does it reveal? A lot. For starters, Microsoft now holds approximately 27 percent of OpenAI on an as-converted basis, accounted for under the equity method. The total funding commitment is $13 billion, of which $11.8 billion has been funded as of March 31, 2026. The October 2025 OpenAI recapitalization produced a dilution gain. Microsoft recorded $5.9 billion of net gains from OpenAI investments over the nine months, primarily from that dilution gain. The prior nine-month period reflected $2.7 billion of net losses on the same investment. In plain English, even though Microsoft owns less of OpenAI, that smaller stake is worth more, and it produced a gain. Why? Because the implied valuation of OpenAI rose faster than Microsoft’s ownership percentage fell. Microsoft booked the markup. Money for nothing, and chips for free. Poring over the 10-Q and the footnotes, it…