I've seen them do exactly that. I agree 100%. They barely are on the ask more than a minute or two. Maybe they sell 10,000 shares or something, but they have been buying like mad since last week. When that happened, especially earlier on last week, the other MM's have to match. One 5 min. stretch the .08 days I think it was, they bought 2 different 1 million share lots. I have no idea the number they have gotten though, but it's had to be a decent amount.