Just to add to your point Big T

There's a very good video by Bloomberg called Phantom Shares which reports on the NSS that is running rampant. One business owner literally bought every single outstanding share of his company, but nonetheless selling occurred anyway.

Hangout is not able to embed properly, so I can't view the video below but if you go to youtube and look up Phantom Shares you will see the video.

http://www.youtube.com/watch?v=9w2FDNsJFuw