I have a question about something That I found strange today, if not unethical (no accusations here). An ECN held the inside ask, apparently to fill an order at 5.62 ( time and sales)- the orders kept coming and coming and he would not uptick, he just kept refreshing his 1 size. The price flatlined for about an hour while time and sales showed me that at least 100 000 shares were being bought at the same price of 5.62, after some time it seems that he enlisted the help of a market maker and they both held the price while orders were filling. Prior to that the stock was in a nice uptrend. What took Place there ?