They sinply buy shares at the early morning (pushed shares to a 52 week high this morning HMMM) then sell into weakness. Someone needs to be on the floor to set this up. This starts triggering stops that adds to the weakness that triggers more, Finally yoiu get some people scared and sell shares which adds more fulel...but eventially the original starter wants back in and starts to buy which causes an uptick and people start to buy and cover then strentgh begins and the share price starts to move up. Suddenly, day traders can make a few bucks and they buy big...and low and behold the stock recovers and the good ol boys walk AWAY WITH OUR STOCK AND MONEY!!!!
It was stealing of shares by triggering stops,,,this is called a bear raid by someone in the position to see where stops are set...very risky except on a news day...it always works and it should be illegal!