THE HAnDbook of TECHnICAl AnAlysIs
27.2 Classification of Clusters and Confluences
static price Clusters
Overlays may be single price barriers or multiple overlay barriers referred to as
clusters or confluences. Price overlays, including price barrier levels like prior
support and resistance, indicate potential reaction levels or zones and are ex-
pected to unfold initially and primarily as reversals in price. These potential
reaction levels or zones are known ahead of time, and this allows for the early
placement of limit‐entry orders. There is no real ambiguity associated with these
reaction levels. They may be regarded as price‐static indicators since the prices
that they are indicating do not change over time, although there is a possibility
that they may be subsequently invalidated or overshadowed by more significant
reactions levels.
Here is a list of 13 popular price overlays and barriers that may form the basis
of price clusters:
- Support and resistance levels or zones: Significant price inflection points and
historical price extremes
- Percentage‐based retracement levels: Fibonacci Retracements, Gann’s one‐
eighth, 50 percent, one‐third, and one‐fourth retracements
- Percentage‐based expansion levels: Fibonacci Expansions, Chart Pattern Min-
imum 1:1 Price Objectives
- Percentage‐based extension levels: Fibonacci Extensions
- Percentage‐based projection levels: Fibonacci Projections, The ABCD (Mea-
sured Move) Pattern
- Retracement and projection levels: Gartley’s Pattern
- Volatility‐based projection levels: Multiples of ATR and Standard Deviation
Price Filters, Percentage of Price Filter
- Algorithmically based reaction levels: DeMark’s TD Sequential Bar Count,
Guppy’s Count Back Line
- Pattern‐based reaction levels: Japanese Candlestick and Bar Chart Based Trig-
ger Levels
- Behaviorally based reaction levels: Psychological Numbers (prices associated
with double and triple zeros)
- Event‐based channels: Donchian Channel and Darvas Box Breakout Levels
- Risk‐ and money management–based levels: Reward to Risk Ratio–Based
Price Targets, Percentage Risk Targets, and Stop Levels
- Mathematically based price projection levels: Gann Squaring of Price, Murray
Math Lines, Floor Trader Pivot Points
The following charts are some examples of price clustering in action in vari-
ous markets.
Figure 27.6 depicts price approaching a resistive price cluster comprising a
one‐to‐one price expansion and Fibonacci 50 percent retracement level on the 3M
Co. Daily Chart.