The people in a position to know are telling you something: This is a Bubble, and they're getting the hell out while they're ahead. You should do the same.
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[1] https://www.cnbc.com/2025/11/11/softbank-sells-its-entire-st...
[2] https://finance.yahoo.com/news/big-shot-michael-burrys-ai-14...
> SoftBank’s Vision Fund was an early backer of Nvidia, reportedly amassing a $4 billion stake in 2017 before selling all of its holdings in January 2019. Despite its latest sale, SoftBank’s business interests remain heavily intertwined with Nvidia’s.
Further, ″[SoftBank] made a point of saying that it wasn’t any view on NVIDIA. ... At the end of the day, they are using the money to invest in other AI related companies,” he said.
Make of that what you will, but asking "are they irrational?" needs to answer with more than just "Softbank sold all of Nvidia again."
Both of these come from the link you provided.
Strange definition of “early backer of Nvidia”.
[1] https://en.wikipedia.org/wiki/SoftBank_Vision_Fund [2] https://en.wikipedia.org/wiki/Nvidia
Thiel sold Palantir which is ridiculously overrated ( 1740.10 pe ).
Additionally, NVIDIA is going to get some competition for AMD. Or even Broadcom ( see TPU's from Alphabet)
He bought Microsoft, which has both AMD and NVIDIA for inference.
His sales aren't about selling AI. Just some bets cashing out.
Microsoft, Amazon, ... All can't build infrastructure quickly enough and they even admit in quarterly earnings that it's a bottleneck for now.
And they all grew a lot ( 20-40% )