Three-Box Point-and-Figure Method
Record meaningful price reversals and act only when supply or demand breaks
- Difficulty
- Advanced
- Time to result
- ~months to results
- Steps
- 5
- Confidence
- 99%
Dorsey describes point-and-figure charting as a logical, organized record of imbalances between supply and demand. A rising column uses Xs and a falling column uses Os, but the chart does not update merely because another day passes. Price must move enough to add a box, and it must reverse by three boxes or more to start the opposite column. That filtering makes the chart respond to meaningful movement instead of every fluctuation. A buy signal appears when a column of Xs exceeds the previous X column; a sell signal uses the equivalent break by Os. Repeated resistance followed by a breakout indicates that selling pressure has finally been absorbed. The method turns those visible events into programmable rules, helping the investor act on price evidence rather than emotion or narrative.
Origin
Dorsey learned the method from A. W. Cohen's 1947 book after colleague Steve Kane asked him to understand the operating system behind Kane's market analysis.
Core principles
- 01Price records the imbalance between supply and demand.
- 02Inconsequential daily movement should not force a chart update.
- 03A three-box reversal is required before changing columns.
- 04A breakout above a prior X column signals demand overcoming supply.
- 05Objective signals reduce the temptation to trade on emotion.
How to run it
- 1
Set the chart scale
Choose the instrument, box size, and three-box reversal convention. These rules determine which price movements are meaningful enough to record.
Pro tip Keep the scale consistent so signals remain comparable through time.
Watch out Changing the scale after seeing the outcome makes the method discretionary.
- 2
Build the active column
Add Xs as price rises or Os as price falls by the required box amount. Do not update the chart for time passing alone.
Pro tip Let the chart remain unchanged when movement is inconsequential.
Watch out Adding every daily fluctuation removes the method's noise filter.
- 3
Require a three-box reversal
Begin the opposite column only when price reverses by at least three boxes. Smaller counter-moves leave the current column intact.
Pro tip Apply the threshold mechanically rather than anticipating a reversal.
Watch out Premature reversals create signals the stated method does not support.
- 4
Identify the break
Compare the active column with the previous column of the same type. Xs exceeding prior Xs create a buy signal; Os exceeding prior Os create a sell signal.
Pro tip Watch repeated tests of the same level because a later break can show that supply has been absorbed.
Watch out A column change by itself is not the same as exceeding the prior comparable column.
- 5
Follow the rule
Use the signal within a predefined portfolio process. Let the objective system determine the action instead of replacing it with a market forecast.
Pro tip Agree on the response before difficult market conditions test discipline.
Watch out Abandoning the method when it feels worst restores the emotional behavior it is meant to control.
In the wild
Dorsey describes a stock reaching the same level four times without breaking through. On the fifth attempt it rises beyond that level, showing on the point-and-figure chart that the supply which repeatedly stopped the advance has been absorbed.
→ The breakout produces an objective signal that demand has overcome the prior selling pressure.
Common mistakes
Updating for every day
Point-and-figure charts are driven by qualifying price movement, not by the calendar.
Anticipating the reversal
Acting before the three-box threshold replaces the objective rule with a forecast.
Overriding an uncomfortable signal
The emotional override defeats the reason for using a systematic method.
Is it for you?
Best for
It is best for investors willing to learn a formal charting language and follow predefined price-based rules.
Not ideal for
It is not ideal for investors seeking fundamental valuation estimates or discretionary predictions from daily news.
From the transcript
“this methodology was created simply as a logical, organized way of recording the imbalance between supply and demand.”
“what has to happen is the stock either has to reverse columns by three boxes or more”
“a buy or sells signal by singing will simply a column of excess that exceeds the previous column of excess.”
From the episode
Interview With Tom Dorsey: Masters in Business (Audio)
Tom Dorsey