IMO no one would either buy nor sell 100 shares at this price it is totally ridiculous, 100 is the code between MM's that they need shares.......
It's a MM signal.
From the MOMO board: MM Signals
100 > I need shares 200 > I need shares badly but dont take it down to get em 300 > Take the price down to get shares.... 400 > Trade it sideways based on Supply and Demand 500 > Gap one way or the other, usually to the direction of the 500 trade. Sometimes - if in the middle - keep the price right where it is. 911 > this one speaks for itself