I too questioned that at one time. Someone explained that Ameritrade does not allow for 7 figures in a single trade.
Don't know if that is true, but it seemed to answer my question. The ones I find weird are the 1,250,105. Like how much did the actual transaction cost? $125.01? were they given the extra 5 as a bonus? Don't know.
I'm still having trouble believing that the FTD 'SHORT' Report are not really 'shorts'.
But that is another discussion with someone else here. LOL