Supply and demandHi all!
This is my take on supply/demand. The gist is that it creates a zone if there is a big enough reaction. This is configurable in settings as "Minimum range (ATR factor)" (the Average True Length of length 14) that is the distance that the price must travel and "Reaction bars" that is the maximum number of bars that price must travel this distance. The zones that are shown are the ones that have a retest, break and retest or is unmitigated (untouched). If a zone is mitigated (entered) or broken it is temporarily hidden. For a zone to be created it needs to have this reaction and the previous bar does not.
So this script will show you zones that are fresh (unmitigated), retested or broken and retested. This means that the zones that are shown have "proven" that they are good zones through this. Basically it means that the script creates a bunch of zones and then picks the good once. This makes the script have some latency, but will hopefully give you good zones. A zone is completely removed if it's broken twice (it's okay if it's broken once and can still have a retest after it has flipped from previous supply (or resistance) into demand (or support)).
Here is a zone (the one that has the lowest opacity) that is broken and retested that could have resulted in a good long trade (the settings are default but has a stop in the beginning of 2024):
You have a setting to remove zones that are pierced (broken by price wicks). The following zone is pierced by price (in the beginning of May) that will not be shown after the start of May if you have "Pierced" checked (the indicator has default settings but a stop in the middle of April):
You have a trend section. Zones that create a reaction upwards can only be created if the trend is considered to be up, and vice versa. The options here are "SMA50" (the current price needs to be over the Simple Moving Average of length 50) and "SMA50, SMA200" (price needs to be over the Simple Moving Average of length 50 and the Simple Moving Average of length 50 needs to be over the Simple Moving Average of length 200). If these conditions are met the trend is considered to be up, otherwise it's down. You can disable this by choosing "No detection".
The zones that are shown also need to be within a limit (of the current price). This limit is 10 (factor of the Average True Range if length 14) by default. Set this to 0 to deactivate. This is useful for not showing zones that are far away from current price and therefore unlikely to be interacted with.
You can stop the calculation of zones (through the "Stop" value in the settings). This is useful to see if previous zones were any good. I used it in my testing of the script but left it because it can be nice to have.
The zones created by the script have different transparency based upon the zone's interaction. The clearest zones are the ones that are unmitigated, the second clearest ones are the ones having a retest and lastly the zones which are most unclear are the ones having a break and then a retest.
You can see the concept of this script to be a mix of supply/demand and support/resistance, having zones being unmitigated (untouched) as the most important but also show the zones having an interaction (in the form of a retest or a break and retest).
This is from a previous supply (or resistance) zone that has flipped into demand (or support) and has shown to be a good zone through a retest followed by a rally (default settings):
This zone has multiple retest and then rallies that could have given a good long trades (it has the default settings but a "Stop" time at 2022-01-14):
TODO:
- Create zones based on pivots
- Handle overlapping zones
- Incorporate volume in the creation and/or interaction with zones
- Add alerts
- Add ability to set maximum zone width
- Add ability to set the maximum number of retest bars
- ...?
The example for this publication has the default settings bit a "Stop" and a tighter "Limit" of 4.
I hope this explanation makes sense, let me know otherwise. Also let me know if you have any suggestions on improvements.
Best of trading luck!
