last time I saw that large number of shares was when a 504 was in full tilt.. we had a half billion bad boys go off in a day..then a 4 day and a 3 day... It was like nutszz spooky even..lol
Like I said I am aware of individuals who got out, in and out again...
Further you have to remember this is a traders stock... people were buying and selling and buying and selling all day...
1 million shares could easily generate 5-10 million shares in volume with all of the traders and flippers... So what appears to be 500 million could be 50-100...