Trading an opening range breakout follows the same five steps every time, regardless of which stock or which range length you use. Knowing the steps cold — before the market opens — is most of the work.
Step 1: Mark the Opening Range
At the market open, note the exact time your range window ends (for example, 9:30-9:45 ET for a 15-minute range). Once that window closes, draw two horizontal lines on the chart: one at the highest price traded during that window, one at the lowest. Those two lines are your reference range for the rest of the session.
Step 2: Wait for a Decisive Close
Don't react to the first tick that pokes above or below the range — wick-throughs that immediately reverse are common. Most traders wait for a candle to actually close beyond the range line on whatever timeframe they're watching (commonly a 1- or 5-minute chart), which filters out a meaningful share of instant fakeouts.
Step 3: Check Volume
A breakout candle on volume noticeably above the session's average carries more weight than one on thin volume. Low-volume breaks are more likely to fail — see how volume confirms a breakout for the general version of this idea.
Step 4: Define Invalidation
Before entering, decide the exact price where you'd admit the breakout failed — typically back inside the opening range on the other side of the level you broke. Writing this down before you enter, not after, is what actually makes it usable as a stop rather than a wish.
Step 5: Plan the Exit
A breakout entry with no exit plan isn't a strategy, it's a guess with extra steps. Common approaches include a fixed price target, a trailing stop, or a technical level (like the prior day's high). ScalpClock's Exit Assistant is built specifically for practicing and analyzing this part of a trade.
A stock's 15-minute opening range is $48.20-$48.90. At 9:52, a candle closes at $49.15 on rising volume — a confirmed breakout of the high. A trader using this setup might define invalidation as a close back below $48.90 (the broken level) and plan an exit at either a fixed target or the first sign of stalling momentum.
Choosing a Range Length
The tradeoff is speed versus noise. A 5-minute range reacts fast but produces more false signals. A 30-minute range is smoother and more reliable but gives a later signal, meaning less of the move may be left to capture. 15 minutes is a commonly used middle ground — see the 15-minute ORB strategy for that specific version in more depth.
Whichever range length you pick, some traders wait for price to pull back and retest the broken level before entering, rather than buying the initial break — see ORB breakout vs retest for that comparison.
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ScalpClock's ORB Signal Engine marks the opening range and flags breakouts on real tickers in real time.
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