Time-Based ORB Extensions
The screech of a grinding wheel against steel marks the start of a heavy shift. Every teardown orb trading scanner dakotalandcommunityinsurance has logged shows the same thing regarding the math of an opening range breakout. A trader looks at the volatility of the first fifteen minutes to set a target. This specific orb method uses the initial width to project the next move during regular trading hours. Measuring the distance between the high and low of the 5 minute candle provides a mechanical basis for all price extensions.
Calculating the Initial Range Width
The first step involves measuring the distance from the session high to the session low during the initial period. If the 5 minute range is ten cents wide, that width serves as the unit of measure. A common error occurs when a small sample overstates the edge by ignoring the impact of the premarket volatility. The math requires a strict adherence to the timeframe selected. Using the thirty minute range requires a different scale than the five minute candle. Each unit of measurement must be recorded before the market open to ensure the math remains objective.
Applying the Extension Multipliers
Once the width is established, the target is set by adding multiples of that width to the breakout point. A one to one extension is the standard baseline. If the 15 minute range is one dollar, the target sits one dollar above the breakout level. A two to one extension requires two dollars of movement. These levels provide fixed coordinates for intraday movement. Relying on round numbers instead of these calculated widths introduces drift into the model. The math stays consistent regardless of the specific ticker or the volume seen at the cash open.
Timeframe Synchronization
Different windows produce different volatility profiles. A sixty minute range captures a much larger movement than a 5 minute slice. The sixty minute range is often used to identify the trend for the entire day. If the first hour shows high volatility, the extensions will be wider. The calculations do not change based on the speed of the move. The width of the opening range dictates the scale. A thirty minute range provides a middle ground for those who find the 5 minute candle too noisy but the hour too slow.
Managing the Extension Targets
Execution depends on the relationship between the breakout and the projected level. A price that reaches the first extension often finds resistance at the second extension. Tracking these levels prevents chasing moves that have already exhausted their mathematical capacity. Monitoring the movement from the opening bell through the mid day lull reveals how often these targets are hit. The data shows that the extension is a function of the initial volatility. If the initial range is tight, the extensions are small. If the range is wide, the targets are distant.