GLBSE is not publicly traded.
Interesting that I was able to sell a share for 10 BTC then.

That's most likely one of the fake shares from GLBSE 1.0 then... You really think Nefario wouldn't even update his own asset page or put up a "contract" of 1 line with a spelling error?
Nefario said long time ago this was a fake asset, but I wonder why he didn't remove this one just like other fake GLBSE v1 assets. (for example SIN)