TL;DRThe high and low established in the first 5, 15, or 30 minutes of RTH. Used as a reference framework for breakout and fade setups throughout the day.
The opening range (OR) is the price high and low established during a defined period after the RTH open. The most common timeframes are 5 minutes, 15 minutes, and 30 minutes. Some traders also use a 60-minute opening range, which overlaps with the initial balance concept.
The opening range captures the first burst of institutional activity when the cash market opens. It establishes reference points that many traders watch for the rest of the session.
The basic opening range breakout (ORB) strategy is straightforward: buy when price breaks above the OR high, sell when it breaks below the OR low. The idea is that the first significant move out of the opening range often continues.
Filters improve the strategy. Check whether the break has volume behind it. Check the direction of the overnight session and the gap. A breakout that aligns with the prevailing trend and gap direction has a higher probability of following through.
The narrower the opening range relative to recent averages, the more likely a breakout will have momentum. A wide opening range may have already captured the day's move.
Even if you don't trade ORB strategies specifically, the opening range levels serve as important reference points. The OR high and low act as intraday support and resistance. Price returning to the OR after a breakout is a common retest entry.
The OR midpoint is a valuable reference for mean reversion. If the OR is 5,195 to 5,210, the midpoint at 5,202.50 acts as a magnet when price is inside the range.
Combining the opening range with other tools like VWAP, prior day's high/low, and volume profile nodes creates a more complete picture of the day's key levels.
15-minute opening range breakout
ES opens at 9:30 and trades between 5,198 and 5,207 in the first 15 minutes. At 9:47, ES breaks above 5,207 with strong volume.
You buy at 5,208 with a stop at 5,197 (below the OR low, 11 points risk). Target: 5,225 (twice the OR range projected from the breakout point). If ES trends, this can capture a multi-hour move.
Opening range fade
ES has a wide 20-point opening range from 5,190 to 5,210. At 10:15, price pushes to 5,213 (barely above OR high) on declining volume.
The wide range and weak breakout attempt suggest a fade. You short at 5,212 with a stop at 5,216 and target the OR midpoint at 5,200.
Trading every opening range breakout without filters
Not all OR breakouts work. Filter by volume, gap direction, and OR width relative to recent averages. The best breakouts align multiple factors.
Using a fixed timeframe for the opening range on all products
A 5-minute OR works differently on ES than on CL. Test which timeframe produces the best signals for the product you trade.
Placing stops exactly at the opposite end of the opening range
Stop runs through the OR high/low are common. Place stops a few ticks beyond the range to avoid getting shaken out by a wick.