Quote from NY0BScalper:
Say a stock that trades 750,000 per day - an illiquid stock - is at new lows, down $2 on the day, 25 minutes into the session, 5 red candle bars down... it prints a low of 25.28, and the 200 shares ARCA bid sits there and keeps absorbing stock, absorbing stock, red prints red prints red prints... behind it is a 25.25 3000 NYSE bid, and at 25.00 8000 NYSE and 6000 ARCA, with very little stock in between.
You see they keep pounding and printing the 25.28 Arca, he has taken over 5000 shares, and you look at the ES and see it's breaking down below support on the chart and making new lows. Then, you see 25.28 arca goes away after a print for 3700. At that point anyone watching the stock is an idiot not to short the 25.25 3000 bid - as much as you want - and immediately bid down between 25.08-25.01