Opening Range

Opening Range marks the high and low of the first minutes after a session opens. The two edges become support, resistance and breakout levels for the rest of the session. Optional target lines sit a fixed number of ticks beyond each edge.

Category Session levelsApplies to Web and DesktopUpdated 2 Nov 2026Read time 3 min

Shows: OR High, OR Low, an optional midpoint and two targets
Resets: At the start of each session
Best on: Intraday time charts

ES on a 3-minute chart on live data: OR High and OR Low mark the opening range, TGT UP and TGT DN are the targets.

How it is calculated

Opening Range uses the session template you choose and a duration. It takes every bar in that duration after the session starts. The highest high is OR High. The lowest low is OR Low.

OR Midpoint = (OR High + OR Low) / 2
Upper Target = OR High + Target distance
Lower Target = OR Low - Target distance

The target distance is a number of ticks, so it adapts to the instrument. The shaded box between OR High and OR Low and the lines span the whole session. The chart shows the last 10 sessions.

Add Opening Range to a chart

In the chart header, click Indicators.
Under Add Indicator, type OpeningRange in Search indicators, or open the Tradrr group. The name has no space.
Click OpeningRange. It is added to the chart and its settings open on the right.

You can add one Opening Range to a chart.

Settings

Range

Setting	What it does	Default
Session Template	The session whose start begins the range. Manage templates in Session Manager.	US RTH, starting 09:30 New York time
Duration	How long after the session start the range keeps updating: 30 seconds, 1 minute, 5 minutes, 10 minutes, 15 minutes, 30 minutes or 60 minutes.	30 seconds

Targets

Setting	What it does	Default
Show target lines	Draws the Upper Target and Lower Target lines.	On
Target distance (ticks)	Distance from OR High up and from OR Low down, in ticks. Disabled while target lines are off.	40

Appearance

Setting	What it does	Default
Show level labels	Labels the lines `OR High`, `OR Mid`, `OR Low`, `TGT UP` and `TGT DN` at the price scale. Labels show for the latest visible session.	On
Show midpoint	Draws the midpoint line.	Off
Range fill	Color of the shaded box between the high and the low.	Yellow
Fill opacity (%)	How solid the box is, from 0 to 100. Set 0 for no fill.	6

Levels

Each level has a color and a line style (width and dash type).

Level	Default look
OR High	Dark green, solid, 2 px
OR Midpoint	Grey, dashed, 1 px. Used only when Show midpoint is on.
OR Low	Dark red, solid, 2 px
Upper Target	Light green, dashed, 1 px. Used only when target lines are on.
Lower Target	Salmon, dashed, 1 px. Used only when target lines are on.

How traders read it

Break above OR High: buyers have taken control of the open. Many traders look for a hold above the high before following.
Break below OR Low: the same for sellers.
Price stays inside the range: no side has won. The edges act as support and resistance until one breaks.
Targets: a fixed-tick measure beyond each edge. Use them as reference exits, not as predictions.

Tip. A short duration gives a tight range that breaks often. A longer one, such as 30 or 60 minutes, gives wider levels that matter more when they break. Try both on Market Replay before you pick one.

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