As a non-RTFA-er. I'm assuming it's a wafer-scale chip, similar to the ones made by Cerebras.
EDIT: From TechRadar[0]: "The 300mm wafer that both CEOs are holding will generate about 50 to 60 ASICs."
[0] https://www.techradar.com/pro/broadcom-and-openai-debut-jala...
If this photo is real I wonder what can be revealed about the approach they have taken by analyzing the architecture of what we can see.
It's more like that "wafer as a big-chip" (more formally, "WSE - Wafer Scale Engine") is now a reality (see Cerebras).
But in this case, the wafer will be split into a few dozen chunks.
What some don't know (including you) is that the industry is doing wafer-sized chips nowadays, of which Cerebras is the flagship company.
That's why the stock movement could be related, and that is why GP wrote that comment.