Quote from bigmoose:
It would be enlightening to hear you go on farther! Perhaps you could comment/work in the statements below from Scientist?
Place a brick on your kitchen floor. Now, dump a glass of water near the brick. Which way does the water flow?
I provide the above analogy only to illustrate a point.
Take a look at a DOM ladder for ES. Note the various levels of volume on each subsequent tic in price. Note the changes as they occur. Would everyone agree that price cannot move beyond a certain level until all volume at that level finds a way off (hit or pulled)? As long as volume sits on that level (or better yet, as long as some trader or groups of traders continue to add volume to that price level) price cannot advance beyond that point. Price cannot fill contracts sitting at 1428.50 as long as contracts exist (or until all contracts have been filled or pulled) from 1428.25 when the bid ask sits at 1428.00 x 1428.25.
Now at certain times during the day (most notably at known support / resistance areas) a huge difference (super large DOM imbalance) materializes. Some have named this phenomenon a 'wall' - similar to the brick on the kitchen floor. This phenomenon does not require the differentiation of subtle principles of DOM levels, but rather, appears as if an elephant has walked between you and your computer monitor.
When this phenomenon presents itself, one need look no further than Time and Sales to determine if 1. contracts are pulled or remain in place or 2. sufficient new (and large) size has moved in to demolish the wall. If neither of these two events occur, then rest assured, price
will move in the direction of least resistance (fewer contracts total).
For those that have witnessed this phenomenon first hand, there remains no reason to debate. They have seen with their own eyes how the market operates. Perhaps they will choose to comment at their leisure.
- Spydertrader