Box Size Chart Example
Below is a box size chart example of Citigroup. Notice how as the stock declined during the 2008 credit crisis, the point and figure box sizes adjusted accordingly.
Box Size: The size of movement required to add an "X" or an "O". For example, a stock at a price of $20 may have a box size of $1. This means that an increase from $20.01 to a high of $21.34 means another "X" is added.
Box Size
In the context of Point & Figure Charts, the box size is the minimum price change that must occur for a given period before a mark (an X or an O) is added to the chart.
Box-Top Order ...
Box size is determined by both stock price and volatility-the greater either is, the bigger the box size. Typically, box sizes vary from $0.50 for cheap stocks to several dollars for more expensive stocks.
Box Size: 5 pips or higher (10 pips recommanded)
Indicators
Tick Value - It will display the value of 1pip (minilot) and the spread.
Traditionally, the box size is set to 1 and the reversal amount is 3 (however, see below for the gory details).
Technical Analysis : Determining the Box Size on P&F Charts
Point and figure charting originated on Wall Street. US prices per share are, by custom, much higher than in Australia.
If the closing price falls below the bottom of the previous brick by at least the box size, one or more black bricks are drawn in new columns. Again, the height of the bricks is always equal to the box size.
In constructing a point and figure chart, a "box size" is first defined as the minimum movement in prices that will occur before a plot of the price change will occur.
The 2 parameters used for plotting are box size & reversal amount. The box size refers to the minimum increase in price needed to add an X to the top of a column of X's, ...
In order to change columns (e.g., from an X column to an O column), prices must reverse by the "reversal amount" (another value you specify) multiplied by the box size.
To create a Point and Figure chart, mark an "X" when prices rise by the "box size" (user specified, allowing you to set the sensitivity). Mark an "O" when prices fall by the box size.
A Point and Figure chart is characterized by the specification of two parameters: box size and reversal number.
Let's take an example. The box size for these values is $1.00. Note that a Wyckoff chart can also use high and low data, but for clarity we have selected closing price data only.
Date
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This box size determines how far the price must move before another X or O is added to the chart, depending on the direction of the price movement.
Point and Figure Chart
A price-only chart that plots up prices as Xs and down prices as Os. The minimum price recorded is called the box size. Typically, a three-box reversal indicates a change in the direction of prices.
Hold down your left button (keep holding) and drag to the right to increase the box size. This change will only effect this session, it is not going to stay that way, so feel free to mess it up all you like.
 See also: Size, Box, Chart, Trading, Pattern
  
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