Just today’s MSFT market cap loss is worth half their entire stake in OpenAI!

u/Brave-Side-8945 · Reddit — r/stocks · February 03, 2026 at 21:06 · ⬆ 968 pts · 💬 188 comments  | View on Reddit ↗
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Original Reddit post

Author argues MSFT's one-day market cap loss is disproportionate to its OpenAI stake value and that the stock is cheap on a low-20s P/E despite record results, asking if others are buying the dip.

MSFT — LONG The author argues Microsoft's single-day $100B market cap loss equals half the value of its 27% stake in OpenAI (last valued at $750B), which the author considers irrational given record quarterly results and a P/E in the low 20s. The implied catalyst is a re-rating as the market recognizes the disconnect, with the author asking whether to buy the dip. No specific risk is stated.

MSFT lost 100B of market cap today.

OpenAI was worth 750B last funding round. MSFT owns 27% of that.

Delivered the best quarterly results ever. Doesn’t stop dumping. Doesn’t make sense. P/E in the low 20s

Score 968
Comments 188
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u/Brave-Side-8945 Reddit r/stocks
MSFT dip irrational vs OpenAI stake, low P/E
The author argues Microsoft's single-day $100B market cap loss equals half the value of its 27% stake in OpenAI (last valued at $750B), which the author considers irrational given record quarterly results and a P/E in the low 20s. The implied catalyst is a re-rating as the market recognizes the disconnect, with the author asking whether to buy the dip. No specific risk is stated.
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This Reddit post, published February 03, 2026, features u/Brave-Side-8945 discussing MSFT. 1 trade idea extracted by AI with direction and confidence scoring.

Speakers: u/Brave-Side-8945  · Tickers: MSFT