Sounds like you don't have very good services to discern what is traded at or by market close (4:00pm) versus the ones that slip in just seconds later.
The folks here have an incredible wealth of additional knowledge on what is going on with many of these trades. That said, a lot of them are in the Deep Pool and outside the nasdaq exchange. Eventually the volcano will erupt! Question is will it be an explosive dacite volcano like Mt. Saint Helens or will it be more of a shield like volcano that we see on the Big Island of Hawai'i which flow more gently but still build up a large shield? I think the former, and the shorts will be part of that dacite volcano complex driving the explosion. Question is.........who is going to lose their shirt? :-)
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