Point and Figure Construction
Point and Figure chart construction is the foundation of Point and Figure analysis. No matter how advanced the chart patterns or trading strategies become, every interpretation begins with understanding how the chart is built. Unlike candlestick or bar charts, which plot every trading session regardless of market activity, Point and Figure charts record only meaningful price movements. This approach removes insignificant fluctuations and allows traders to focus entirely on changes in supply and demand. Before learning how to identify chart patterns, support and resistance levels, or trading signals, it is essential to understand the rules that govern the construction of these unique charts.
The construction of a Point and Figure chart is based on two important settings: the **box size** and the **reversal amount**. The box size determines the minimum price movement required before a new symbol is added to the chart. If the market moves by less than one box, that movement is ignored. The reversal amount determines how much the price must move in the opposite direction before a new column begins. Together, these two settings filter out minor price fluctuations and ensure that only significant changes appear on the chart.
The chart itself is made up of only two symbols. An **X** represents rising prices and indicates that buyers are in control of the market. An **O** represents falling prices and indicates that sellers have gained control. When prices continue moving upward, additional Xs are added to the same column. When prices continue moving downward, additional Os are added to the existing column. A new column begins only when the market reverses by the specified reversal amount. This simple arrangement produces a clear visual representation of the battle between supply and demand.
One of the first decisions a trader must make while constructing a Point and Figure chart is selecting the appropriate **box size**. The box size should be large enough to remove insignificant market noise but not so large that important price movements disappear. A smaller box size captures more market detail and generates more trading signals, while a larger box size filters additional noise and focuses on major market trends. The choice depends on the trader's objective, the volatility of the instrument, and the preferred trading time horizon.
The second important setting is the **reversal value**. This determines when the chart changes from a column of Xs to a column of Os, or vice versa. The two most common methods used in Point and Figure charting are the **1-box reversal** and the **3-box reversal**. Although both methods follow the same basic principles, they produce charts with different levels of sensitivity and detail.
A **1-box reversal chart** changes direction whenever the price reverses by the value of one box. Suppose a stock is currently forming a column of Xs because prices are rising. If the market declines by at least one complete box, the chart immediately moves to the next column and begins plotting Os. Likewise, if the market is falling in a column of Os and then rises by one full box, the chart shifts to a new column of Xs. Because the reversal requirement is relatively small, 1-box reversal charts record almost every meaningful price movement and therefore provide a highly detailed picture of market behaviour.
One unique feature found only in **1-box reversal charts** is the **One-Step-Back**. This occurs when the price reverses by exactly one box and then immediately reverses again in the original direction. Under these circumstances, the next symbol is plotted in the same column rather than creating yet another new column. This behaviour is possible because there is sufficient space above or below the single reversal symbol. The One-Step-Back is considered an important indication that the counter-trend movement was only temporary and that the dominant trend has quickly regained control. It demonstrates how rapidly supply can absorb demand, or demand can absorb supply, depending on the direction of the prevailing trend.
The **3-box reversal chart** is the most widely used version of Point and Figure charting. Instead of requiring only a one-box reversal, the price must move by at least **three full boxes** before a new column is started. This larger reversal requirement filters out many short-term fluctuations and significantly reduces market noise. As a result, 3-box charts generally produce fewer but more reliable trading signals. Since they concentrate on larger price movements, they are particularly useful for identifying medium-term and long-term market trends.
One important principle applies to both 1-box and 3-box charts. **The last plotted box—not the last traded price—is always used when determining the next entry on the chart.** Once a particular price has been used to plot an X or an O, that price itself is no longer considered. Future plotting decisions are always based on the last completed box. This rule ensures consistency and prevents confusion during chart construction.
Another characteristic of Point and Figure construction is that **price gaps do not create empty spaces on the chart**. If a stock suddenly moves several box values higher or lower, every intermediate box must still be filled. For example, if the next recorded price jumps upward by four boxes, the chart plots all four Xs rather than leaving gaps between them. This approach maintains continuity and accurately reflects the complete magnitude of the price movement.
Unlike time-based charts, Point and Figure charts ignore any trading session that does not produce a meaningful price movement. If the market neither extends the existing column nor reverses by the required amount, nothing is added to the chart. A day, a week, or even a month may pass without a single new entry if the price remains within the established range. This selective recording process is one of the primary reasons why Point and Figure charts appear much cleaner than conventional charts.
When constructing a Point and Figure chart using **daily price data**, traders generally follow a systematic sequence. If the current column contains Xs, the day's **high price** is examined first. If the high is sufficient to add another X, the high is plotted and the day's low is ignored. If the high fails to extend the existing column, the day's **low** is then examined to determine whether a reversal has occurred. If the required reversal amount has been achieved, a new column of Os is started. If neither condition is satisfied, the entire trading session is ignored because it has not produced any meaningful price movement.
The reverse procedure applies when the current column consists of Os. The day's **low** is examined first because the prevailing trend is downward. If the low extends the existing column, another O is added and the high is ignored. If the low fails to produce a new O, the day's **high** is examined to determine whether a reversal has occurred. If neither the continuation nor the reversal requirement is satisfied, the day is excluded from the chart. This construction rule demonstrates an important principle of Point and Figure charting: **the existing trend always takes precedence over a possible reversal.**
The construction rules also explain why Point and Figure charts are highly objective. Every new symbol is added according to predefined mathematical rules rather than personal judgement. Two analysts using the same box size and reversal amount will produce identical charts because the plotting process follows a fixed methodology. This objectivity greatly reduces subjective interpretation and increases consistency in technical analysis.
From a practical perspective, understanding chart construction enables traders to interpret Point and Figure patterns more accurately. Once they understand why new columns appear, why certain price movements are ignored, and how reversals are confirmed, recognising trading signals becomes much easier. Patterns such as Double Tops, Triple Tops, Catapults, Triangles, and Bullish Support Lines all originate from these basic construction principles.
Although modern charting software automatically builds Point and Figure charts, every trader should understand the underlying methodology. Relying solely on software without understanding how the chart is formed often leads to incorrect interpretation of signals. Knowing the rules behind chart construction allows traders to adjust box sizes appropriately, choose the correct reversal method, and evaluate whether a particular chart is suitable for their trading strategy.
In conclusion, **Point and Figure Construction** forms the foundation of the entire Point and Figure charting method. Through the use of Xs and Os, predetermined box sizes, and reversal rules, these charts provide a simplified yet highly effective representation of market activity. The distinction between 1-box and 3-box reversal charts, the importance of the One-Step-Back principle, the treatment of price gaps, and the systematic plotting rules all contribute to a disciplined and objective method of analysing financial markets. Mastering these construction principles prepares traders for the advanced chart patterns and trading techniques explored in the subsequent chapters of this module.