Quote from ycxc16588:
1-22-2010
Another observation from TOS of SPY, as price break ut to lower lows, the big volume market order (sell on bid) has disappeared. I have seen market order selling on bid/buying on ask for the last several months everytime when price breaks any intraday extremes by making new itraday high/low. The last big vol market order selling on bid I saw was probably around 2:40 at 10210 level (I am not 100% sure since I could not go back too far on my TOS, but I am not sure I have not seen it for the last 15-20 min as price continue to make lower lows.)
These market order might come from two types of trades, stop order buying/selling for those who want to enter a new trade on breakout or stop order for those who were buying dip/selling top to close their trades. When these orders disappear, it might imply those who are buying the dip to support market are no longer doing so. Are these market makers? or they probably just switched side and joined sellers? From pure price action, you can see that selling was relentless. There was praticaslly no good buying since middle of the session except for some shrt covering.
This observation was quite interesting. A few bloggers devoted to market maker/"smart money" behavior study have also noticed such behavior pattern change first time since march 2008. Does it imply the beginning of new intermediate trend (reverse of current trend) or even the long term trend? How many people expected such price move within only 3 consecutive trading days would have last 30 days' steady advance. Just look at the way it broke 50 MA and landed on 100 MA. It was quite different from last 6-9 months price action, when 50 MA provided support for every major pullback.