This section is mainly just for your information, as it might or might not
be interesting to understand how the point and figure charts are
constructed. Our charting software Bull's-Eye Broker will obviously take
care of plotting the charts for you automatically, so that you can
concentrate on analysing the charts instead of plotting them.
In Point and Figure charts both axis are dependent on price rather than
one being based on price and the other on date. The key unit in a P&F
chart is the point, or unit of price. It is also usually refered to as a
box. The box size may change in value along the y-axis to provide
consistent and relative price movements. This means that a if the stock
price ranges between $8 and $12, the box size may be 10 cents when the
price is below $10 and 20 cents when above. An ‘X’ is placed on the chart
to indicate an upward movement and an ‘O’ indicates a downward movement.
The graph gets its x-axis dimension via three point reversals. A
three-point reversal occurs when either:
The price is on a downward trend, then picks up three or more points,
or
The price is on an upward trend, then falls by three or more points.
When a three-point reversal occurs, the chart is continued in the next
column. Thus every column must contain at least 3 ‘O’s or ‘X’s and
constitutes movement in one direction only. The attraction of this method
is that insignificant movements in the market are filtered out.
Now, let's look at a typical example (Broken Hill). The point size for
these values is 20 cents.
| Date |
Day |
High ($)
|
Low ($)
|
| 10/02/98 |
Tue |
15.38
|
15.00
|
| 11/02/98 |
Wed |
15.22
|
14.95
|
| 12/02/98 |
Thu |
15.01
|
14.81
|
| 13/02/98 |
Fri |
14.95
|
14.35
|
| 16/02/98 |
Mon |
14.45
|
14.05
|
| 17/02/98 |
Tue |
14.39
|
13.98
|
| 18/02/98 |
Wed |
14.62
|
14.31
|
| 19/02/98 |
Thu |
14.66
|
14.42
|
| 20/02/98 |
Fri |
14.40
|
14.24
|
| 23/02/98 |
Mon |
14.45
|
14.32
|
| 24/02/98 |
Tue |
14.35
|
13.98
|
| 25/02/98 |
Wed |
14.22
|
13.93
|
The data previous to this showed an upward trend and constituted a
series of ‘X’s in the column. This column peaks at $15.38 on 10/02/98. The
last ‘X’ is drawn in the $15.20 square because the share has not yet
reached $15.40. This means that for a three point reversal to occur the
price must drop by at least 60 cents, or three points. This happens on
13/02/98 with a low of $14.35. When this occurs the chart is moved to the
next column and ‘O’s are placed in the $15.00, $14.80, $14.60 and $14.40
rows. An ‘O’ is not placed in the $14.20 row because the price has not yet
reached $14.20. The price does, however, fall to $14.05 on 16/02/98 and
another ‘O’ is place in the $14.20 row. The chart falls once again to
$13.98 on 17/02/98. When this occurs yet another ‘O’ is added to the
chart, this time in the $14.00 row. The very next day the chart rises to
$14.62 and this constitutes a three-point reversal. The chart is moved to
the next column and ‘X’s are placed in the $14.20, $14.40 and $14.60 rows.
No more ‘X’s are added to this column because the share performs another
three point reversal on the 25/02/98 and three ‘O’s are place in the
appropriate points in the next column. The chart should now look like the
this (first column of chart incomplete):
Dates are added to the chart by replacing an ‘X’ or an ‘O’ by the month
number. When the year changes it is written at the bottom of the chart.
You will notice that the year labels can be vary in position as the charts
movement is dependent on price and not on date. The suspension of trading
on particular shares is shown by a ‘?’ in the charts.