Order flow is real-time, time sensitive, evolving data base that displays data in its structural form. Normal candlestick charts are one-dimension, while the order flow charts is two-dimensional and allows a trader to view the market in greater depth. Order flow allows a trader to see patterns in trading that are made due to heavy participation or lack of participation.
Tails occur because traders get trapped, caught offside, because they are too anxious to get into a trade and try and predict what will happen next because of greed. Instead of letting the bar develop and let the trade appear they end up taking a very speculative trade. Ironically, the actions of the anxious traders not just leave them in a bad trade but to order flow traders a good trading opportunity appears, a buying or selling tail, based on the footprints left by the anxious traders.
For most traders, their main focus for determining market movement is by analyzing price. The problem is that price is an after effect of market activity. If you really want to know where the market has the potential to trade to, a trader has to understand what is happening in the order flow. The key is to stop looking at the market in terms of price, but rather to look at the market based on the activity (trading) or lack of activity (trading) taking place.
The problem with most technical indicators is that they don't take into account order flow conditions. Most technical indicators simply take current price activity and compare it to previous price activity. It is based almost entirely on price. There is no consideration to as to whether the market is doing what it is supposed to do - facilitate trade. This is seen through the order flow, the volume traded on the bid and volume traded on the offer. Because of the lack of awareness to what is trading in the market, pure technical indicators often incorrectly higher prices as a sign of market strength or lower prices as a sign of market weakness, when in fact under the current market conditions those high or lows may be showing signs of market excess causing a rejection of those new highs or new lows. As a result, higher highs with less trade facilitation give experienced order flow traders and opportunity to get short, while technical traders, seeing only price go higher without regards to volume and trading activity, see market strength and continue buying in anticipation of higher prices only to be caught offsides, long at the swing high and the market turns starts trading lower.
Intraday movements are not random occurrences. Intraday trends begins with turning points at the micro level and are often visible in the order flow in certain circumstances.>