Product managers, Do you have a portfolio ?

How many product managers here have a portfolio ? Do you want to build one ? or are you working / planning to have one ? Do you think it is needed to land a job ?

Feel free to share link for your/ your favorite PM/UI/UX portfolio

I am planning to start working in mine , not sure if it is worth the pain.

Plus i work for Federal client , so all the work is behind a think wall of NDA. So cant share it as is, its gonna need a lot of time and effort.