ORB Extension Ratios

The ringing of the opening bell often precedes the first significant volatility spike of the session. Every teardown orb trading targets publicsafetyhaptics has logged shows the same thing regarding how an intraday profit is measured through extension ratios. Calculating the distance between the session high and the session low during the first fifteen minutes provides the base metric for all subsequent price projections. This math relies on the width of the initial range rather than arbitrary price points.

Calculating the Base Range

The work begins by identifying the high and low of the five minute range. This width serves as the fundamental unit of measurement. A trader subtracts the low from the high to find the total points or cents contained within that initial period. If the high is 150.50 and the low is 150.00, the opening range width is 0.50. This number is the multiplier base. Using a 15 minute timeframe provides more stability for slower moving stocks, while a 5 minute window captures more immediate momentum. The math remains mechanical regardless of the chosen period.

Applying the Multipliers

Extension targets are set by multiplying the range width by specific coefficients. The first level is typically 1.0x the range, projecting from the breakout point. The second level is often 2.0x. If the width is 0.50, a 2.0x extension adds 1.00 to the breakout price. These levels do not change based on sentiment. They change based on the size of the opening range. A small range results in tight targets. A large range results in distant targets. A small sample overstates the edge if the multiplier is applied to a range that is abnormally wide due to premarket volatility.

Timeframe Selection and Volatility

Choosing between a 30 minute or a 60 minute range changes the scale of the trade. A 60 minute range captures the entire first hour of regular trading hours. This provides a much larger denominator for the extension math. Large ranges require larger price movements to reach the second or third extension level. This mechanical approach removes guesswork. The price either hits the mathematical extension or it does not. The data from the first hour dictates the expected movement for the rest of the day.

Execution and Targets

Targets are placed at the calculated extension levels. A 1.5x target sits halfway between the 1.0x and 2.0x marks. The math is applied to the direction of the opening range breakout. If the price breaks above the high, the extensions are added to that high. If the price breaks below the low, the extensions are subtracted from that low. The process is repetitive. The calculations are performed the same way every morning after the initial volatility settles.