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Knowledge Base

Concentric Circle


Concentric Circles are used to draw circles that are probable values of support and resistance. Like the single Circle tool, the Concentric Circles tool uses the chart's time/price ratio in its calculation.

The circles are calculated by specifying a starting point in the market, and then moving the cursor to the right until the base circle is the desired size. The other circles are then calculated as a percentage of the original circle (which can be set to custom levels).

To add the tool to your chart, select the tool from the Levels tool group, and left-click on a point where you wish to start drawing the Concentric circles. Next, left-click on your second desired point. Optuma will then draw the tool using the default settings. Change the tool's Price Unit property to match the time/price ratio value in the bottom right corner of the screen.

Actions & Properties


Add New Level: Select this action to add a new level to the tool.

Add to Toolbar: Adds the selected tool to your custom toolbar.

Apply Settings to All: When multiple Concentric Circles tools have been applied to a chart, page or workbook, this action can be used to apply the settings of the one selected to other instances of the tool. This is a great time saver if an adjustment is made to the tool - such as line colour - as this allows all the other Concentric Circles tools in the chart, page or entire workbook to be updated instantly.

Copy Tool: Allows you to copy the selected tool, which can then be pasted onto a different chart window.

Move to Back: If the tool is displaying in front of other tools or indicators clicking this action will move the tool view to the background.

Move to Front: If the tool is displaying behind other tools or indicators on the chart, clicking this action will bring the tool to the forefront.

Restore Default Settings: Click this action if you have adjusted the default settings of the tool, and wish to return to the standard properties originally installed with Optuma.

Save Settings as Default: If you have adjusted any of the tool’s properties (colour, for example) you can save the adjustments as your new default setting. Each time you apply a new Concentric Circles to a chart, the tool will display using the new settings.

Delete: Deletes the tool from the chart.


Tool Name: Allows you to adjust the name of the tool, as it's displayed in the Structure Panel.

Levels: Click on this option to display the different percentage levels of the circles.
To add a new level to the chart, left-click on the blue + button and enter the values as needed.
  • Value - Sets the value for the concentric circle. To change the value amount, click in the field and enter the new value.
  • Line Style - Sets the line type, thickness, colour and transparency of the Retracement lines.
  • Visible - To hide a level, deselect the check box with the green tick.

Use Chart's Price Unit: Tick this box to set the price unit for the tool calculation equal to that of the chart.

Price Unit: The value in this field determines what one unit of price is equal to. This may require adjustment depending on the data file that the Concentric Circles is applied to. To change the value, simply click in the field and enter a new value.

This enables Concentric Circle to be repeated if required.

Line Style:
The Line Style property allows you to adjust the type of line displayed. There are 8 options available: Solid, Dots, Dash, Dash Dots, Long Dash, Long Dash Dot, Long Dash Dot Dot, Stippled.

Line Width:
Allows you to adjust the width of the lines. Moving the slider bar to the right increases the thickness of the line.

Line Colour: Allows you to select the colour of the line. Clicking on the drop down arrow will display a colour swatch. Locate the desired colour and left-click it once to select it.

Tool Transparency: Use this slider bar to adjust the transparency of the tool. Moving the slider to the left will decrease the transparency of the tool.

Visible: When unchecked, the tool is hidden from the chart.

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