Most I've seen someone hold was 20 million shares of a certain stock. Some people had 20 million OXFV and made enormous money after the Uluru merger.
Oh chit it's going to .0001!!! .0018x.002 about to break resistance!!! We're heading for pennyland!!! No, wait, nickelland, pick up some more!!! It's going to a friggin DOLLAR, weeeeeeeeee!!! BS bid whacking and it's a good buying opportunity!!!