The first minutes after the US cash market opens at 9:30 a.m. New York time are the most active of the day. The high and low set in that window — the opening range — often act as the battle lines for the rest of the morning. When price breaks out of that range with conviction, it frequently keeps going.
Defining the opening range
Pick one length and stick with it:
| Range | Pros | Cons |
|---|---|---|
| 5 minutes | Early entries, tight stops | More false breaks |
| 15 minutes | Good balance | Misses some fast moves |
| 30 minutes | Fewer, cleaner signals | Wide stops, later entries |
Mark the high and low of the range once it completes. Only use the regular trading session — overnight Globex prices on ES and NQ are excluded from this range.
Entry rules
- Wait for a candle close beyond the range on your execution timeframe (for a 15-minute range, a 5-minute close works well).
- Enter on the close, or on a pullback to the broken level if you prefer a tighter stop.
- Trade only one direction per day. If the long breakout fails, a short breakout later is a lower-quality trade.
Stop and targets
- Stop: the opposite side of the range for the full version, or the range midpoint for a tighter version.
- Target 1: one range height beyond the breakout.
- Target 2: the prior day’s high or low, or the overnight high/low if it sits further out.
- Time exit: close by noon. Breakouts that haven’t worked by late morning usually drift back into the range during the lunch lull.
Sizing the trade on ES and NQ
Contract values matter more than point distance:
| Contract | Value per point | Tick (0.25) |
|---|---|---|
| ES (E-mini S&P 500) | $50 | $12.50 |
| MES (Micro E-mini S&P) | $5 | $1.25 |
| NQ (E-mini Nasdaq-100) | $20 | $5.00 |
| MNQ (Micro E-mini Nasdaq) | $2 | $0.50 |
A 15-minute ES range of 12 points with the stop at the opposite side risks $600 per ES contract. On a $50,000 account risking 0.5% ($250), that’s too large for even one ES — but it’s four MES contracts ($240). Use the futures calculator to do this instantly.
Prop firm note. Trailing drawdown accounts punish wide stops. If the full-range stop exceeds your daily loss allowance, use the range midpoint stop or trade micros — never shrink the stop below where the setup is invalid.
Filters
- Gap context. A large overnight gap that’s already filling often produces failed breakouts in the gap’s direction.
- Range size vs. average. If the opening range is already bigger than the instrument’s typical first-hour move, the expansion may be done.
- Relative volume (stocks). For single stocks, trade ORBs only on names with unusually high volume that day — usually because of news or earnings.
- VWAP alignment. Longs above VWAP and shorts below it filter out many counter-trend breaks. See the VWAP trading strategy.
A worked example on ES
Suppose ES opens at 9:30 a.m. and the 15-minute opening range runs from 5,412.00 to 5,424.00 — a 12-point range.
- Trigger: at 9:55 a 5-minute candle closes at 5,426.25, above the range high. Price is above VWAP and the overnight gap has already filled, so the filters agree.
- Entry: long at 5,426.25 on the close.
- Stop: the range midpoint, 5,418.00 — 8.25 points of risk ($412.50 per ES, $41.25 per MES).
- Size: on a $50,000 account risking 0.5% ($250), ES is too large; six MES contracts risk 6 × $41.25 = $247.50.
- Target 1: one range height above the high, 5,436.00 — 9.75 points, about 1.2R. Take half off here and move the stop to breakeven.
- Target 2 / time exit: the prior day’s high at 5,447.50, or flat by noon, whichever comes first.
If the trade instead closes back inside the range within two candles, many traders exit early rather than waiting for the full stop — failed breakouts that re-enter the range quickly rarely recover.
Opening range breakout on stocks
The same rules work on liquid single stocks, with two adjustments:
- Only trade stocks “in play” — unusually high relative volume, an earnings release or major news. Quiet stocks produce random breaks.
- Use a 5-minute range for fast movers and size from the stop in dollars per share: a $1.20 stop risking $250 allows about 208 shares. The position size calculator handles forex and gold; for stocks, divide your dollar risk by the stop distance per share.
Pre-session checklist
- Mark the prior day’s high and low, the overnight high and low, and VWAP.
- Check the economic calendar for releases between 9:30 and 11:00 a.m.
- Note the gap size and direction.
- Write your range length, stop type and maximum number of trades before the open.
Common ORB mistakes
- Entering on the first tick through the range instead of waiting for a candle close — most false breaks reverse within the bar.
- Trading both directions after the first break fails, doubling the day’s risk.
- Oversizing on wide-range days. When the range is large, the stop is large: cut contracts, not the stop.
- Holding into the lunch lull hoping for the second target.
- Changing the range length after a few losses instead of collecting enough data.
Testing it
Record each session: range length, range size in points, break direction, filter conditions and outcome in R. After 60–100 sessions you’ll know whether your chosen range length and filters produce positive expectancy — check it with the risk/reward calculator.
Frequently asked questions
What is the best opening range length?
There is no single best length. Five-minute ranges give earlier, tighter entries but more false breaks; 15- and 30-minute ranges give fewer, more reliable signals with wider stops. Test one length consistently rather than switching.
Does the opening range breakout work on micro futures?
Yes. MES and MNQ track the same index as ES and NQ, so the price behavior is identical. Micros simply let you trade the setup with one-tenth of the dollar risk per point.
Is the opening range breakout profitable?
It can be, but results depend heavily on the instrument, range length, filters and costs. Treat any strategy as unproven until you have logged 60 to 100 of your own trades or a careful backtest showing positive expectancy after commissions and slippage.
When should I not trade the ORB?
Skip days with high-impact news inside the first hour, days when a pre-market release such as CPI leaves an abnormally wide range, and days when the range is already larger than the instrument's typical first-hour move.