An opening range breakout is a day trading method that marks the high and low a market sets in the first part of the session, then trades in the direction price leaves that range. The idea is simple: the open is when overnight orders and news meet the market, and a decisive move out of that early range can set the tone for the day.
Quick answer: what is an opening range breakout?
The ORB method uses the high and low of the first 15, 30 or 60 minutes of a session. A trader buys if price breaks above the range high or sells if it breaks below the low, with a stop inside or beyond the range and a target planned before entry.
What the opening range is and why it matters
The opening range is simply the high and low printed in a fixed window after a market opens. Many traders use the first 30 minutes; others use 15 minutes or the full first hour high and low. Once the window closes, those two prices become the day’s first reference levels.
Why the open? Orders that built up overnight are filled, news released outside hours is priced in, and volume is usually at its highest. FINRA notes that news or other factors can significantly move a price when the market opens again, which is the energy the ORB method tries to use.
Choosing the window: 15, 30 or 60 minutes
There is no correct window. A short window gives an earlier entry but catches more noise, while a longer one filters out early whipsaws at the cost of a later entry and a wider range.
| Window | Strength | Drawback |
|---|---|---|
| 15 minutes | Early entry, tight range | More false breaks while volatility settles |
| 30 minutes | Balance of speed and noise | Can still whipsaw on news days |
| 60 minutes | Clearer first hour high and low | Wider stop, much of the move may be gone |
Which open should a UK trader use?
Use the cash open of the market you trade. For the FTSE 100 that is 08:00 UK time; for US indices it is the New York cash open, normally 14:30 UK time. Forex trades around the clock, so most traders anchor the range to the London or New York session open, which our guide to the best time to trade forex in the UK covers.
How to trade an opening range breakout step by step
Most of the work happens before the bell. Our pre-market trading routine checklist covers the levels and news to note first, so the range is read in context.
- Mark the window. Note the high and low once your window has closed.
- Check the width. Compare the range with a normal day’s movement. A range that already covers most of a typical day leaves little room to run.
- Check the context. Is there a higher-timeframe level, yesterday’s high or a gap nearby? A break straight into a major level is a weaker trade.
- Choose an entry. Either a stop order a few points beyond the range, or wait for a candle to close outside it, or wait for a retest.
- Set the stop and size. Place the stop where the idea is wrong, then size the position so the loss is a fixed amount.
- Plan the exit. Set a target and a time stop, for example closing the trade if it has gone nowhere by lunchtime.
Entry styles compared
A stop order gets you in the moment the range breaks, but it also fills on every false break. Waiting for a candle close outside costs a few points but removes some spikes. Waiting for a pullback, as in our breakout and retest strategy, gives a tighter stop but means missing the moves that never come back.
Filtering false opening breakouts
The biggest problem with any opening breakout is the break that reverses within minutes. Our guide on how to avoid false breakouts goes deeper, but these filters matter most at the open:
- Room to the next level. If a major resistance sits just above the range high, the reward may not justify the risk.
- Range width. Very wide ranges mean huge stops; very narrow ones break on noise.
- News timing. A data release 30 minutes after the open can reverse the first move completely.
- Where price sits against the day’s average. Many intraday traders check the break against the volume-weighted average price for the session.
- Gaps. If the market opened with a large gap, read our gap trading strategy guide first: gaps often partly fill before trending.
Worked example: an ORB trade on an index
All figures are hypothetical. Example: on a £5,000 account we risk 1% per trade, which is £50. A UK index opens at 08:00, and by 08:30 the opening range has a high of 8,240 and a low of 8,200, a width of 40 points.
- Entry: a 5-minute candle closes at 8,244, above the range high, and we buy at 8,244.
- Stop: the middle of the range at 8,220, so 24 points of risk.
- Size: £50 divided by 24 points is about £2.08 per point, so we round down to £2 per point on a spread bet. Risk is then 24 × £2 = £48.
- Target: the range width added to the high, 8,240 + 40 = 8,280. That is 36 points from entry, a potential gain of 36 × £2 = £72.
If the stop is hit we lose about £48 plus the spread, and more if a fast market fills the stop at a worse price. Our guide on how to calculate position size for spread bets and CFDs shows the sizing steps in full.
Risk at the open: spreads, slippage and leverage
The open is the most active time of day, and that cuts both ways. Spreads can be wider for the first minutes and a stop order becomes a market order when triggered, so the fill may differ from your price. Our guide to slippage in trading and why fills differ explains why.
Spread bets and CFDs are leveraged: a small move against you creates a large loss relative to your deposit. The SEC’s investor education office warns that day trading involves minute-to-minute decisions and leverage that can lead to substantial losses, so fixed risk per trade is not optional.
Common mistakes with the ORB strategy
- Trading before the window closes. Entering on the first spike defeats the purpose of measuring the range.
- Taking both sides on a whipsaw day. Long above the high, stopped, then short below the low: set a limit of one or two attempts.
- Ignoring range width. A huge range means a huge stop and a tiny position, or an oversized loss.
- Forgetting the calendar. Scheduled news can turn the first move inside out.
- Using it on every market. Test it first; behaviour differs between markets.
Frequently asked questions
What is the best window for an ORB trade?
Many traders use a 30-minute range on a 5-minute chart as a balance between speed and noise. The right window depends on the market, so test 15, 30 and 60 minutes on your own instrument before choosing.
Does the opening range breakout work in forex?
It can, but forex has no single open. Traders usually anchor the range to the London or New York session open, when volume rises sharply.
Where should the stop go on an ORB trade?
Common choices are the middle of the range or just beyond the opposite side. The middle gives a smaller stop; the far side gives more room but needs a smaller position.
What if price breaks both sides of the range?
That usually points to a choppy, two-way day. Decide in advance how many attempts you allow, and stand aside once that limit is reached.
Next steps
If intraday trading is new to you, start with our UK guide to day trading for beginners, then read our complete beginner’s guide to price action trading to judge which breakouts sit at meaningful levels.
Assessing price position, a filters and trigger process and when not to trade are all part of our price action trading course, and the basics section is free to start.
This article is for education only and is not financial advice. Trading leveraged products such as CFDs and spread bets carries a high risk of losing money.
