Does Microsoft even have an OpenAI stake? Their original more public deal was revenue sharing up until they reached 100x $1 billion. That doesn't sound like a stake.
They also had tech sharing valid until the OpenAI board declares 'AGI'.
That seems like a really bad deal. And that was probably at the time when Microsoft had the most leverage to make a deal. Their subsequent deals would make sense to be worse.
They have a very creative investment structure but they do own a stake in OpenAI. It’s just sounds more like a commercial agreement the way it was laid out, which primarily has to do with OAIs organizational structure
If the deal is still based around capped revenue, I wouldn't call it an ownership stake.
As far as I know, they have not disclosed it. If you have more information about something concrete regarding ownership, I'd love to hear it. Maybe I haven't understood everything that was stated.
In the end, whatever Microsoft has is probably less valuable than a sizable ownership chunk that most people seem to assume.
I imagine a lot of people are investing in Microsoft as a proxy to OpenAI. Those people are set to be disappointed.
OpenAI and MS have been negotiating about turning that into a straight percentage of equity.