There are (extremely untrustworthy) rumors circulating around day traders' Twitters of a potential takeover by Microsoft.

e.g. https://twitter.com/search?src=typd&q=amd%20msft

Probably this:

https://www.digitimes.com/news/a20180307PD206.html

There have been a bunch of positive AMD stories lately, though.

Found another news article about takeover rumors: https://finance.yahoo.com/news/why-did-amd-stock-pop-1749058...

Maybe a big three cloud provider made a purchase? If AWS, Google, or Microsoft Azure starts using AMD that's a big deal.

Could also be a big purchase from a big vertically integrated large scale IT operation like Facebook, Twitter, etc.

AMD hasn't figured out how to optimize power usage on their CPUs nor GPUs, but what choice do you have when Intel nor Nvidia are for sale?

I have no idea but I'm already short.

Isn't that just gambling, then?

I could not find any indicators in their quarterly report. I didn't believe that someone would buy AMD.

I did not just short sell it instantly but I waited for news, once I realised that I was right, I shorted them and also made profit.

I believe in the company and I think that this stock will be much more worth in a few years but those absurd gains were just panic buyers and once they realised that they were wrong they started panic selling. Great week for me

So "I have no idea" wasn't quite accurate - you did have an idea. Your analysis showed the spike was panic buyers, and there was no indication of a reason for the spike.