Magnificent graphs ahead:
http://bitcoin.stamen.comNot my work. Just found it. It's really impressive.
Check #117 for example. Sold a bunch at the top but, as we know, MtGox didn't had much fiat withdrawal activity.
So my take is that people mostly just lost money with Gox. They played, they speculated, some were really lucky and got more coins but in the end all went back into the box