I see that the stock price jumped high on Sept 10 and is now back to where it was the day before. So what is Oracle spending the $300B on? Did they get any pe

I see that the stock price jumped high on Sept 10 and is now back to where it was the day before. So what is Oracle spending the $300B on? Did they get any percentage ownership of OpenAI? Is it building out the cloud hardware data center? Can anyone other than OpenAI use it?