Opening Range Breakout Pine Script for Prop Firm Evaluations
The Opening Range Breakout is one of the cleanest, most prop-firm-compatible strategies available for ES, NQ, MES, and MNQ futures. Fixed range, defined stop, maximum two entries per session. Here is the Pine Script built specifically for evaluations.
What Is the Opening Range Breakout — and Why It Fits Prop Firm Evals
The Opening Range Breakout (ORB) is a session-based strategy that defines the price range established during the first 30 minutes of the Regular Trading Hour (RTH) session — 9:30 to 10:00 AM Eastern for equity index futures like the ES and NQ. That 30-minute window captures the initial institutional order flow, news reactions, and market sentiment for the day. The high and low of that window become the "range."
Once the opening range is locked in at 10:00 AM, the strategy shifts to breakout mode. If price closes a full bar above the range high on the 5-minute chart, the script enters long. If price closes below the range low, the script enters short. The entry is on bar close — never on wick touches or intrabar sweeps — which eliminates the most common source of repainting in breakout strategies.
Why does this suit prop firm evaluations so well? The math is straightforward. A 30-minute opening range on ES typically spans 4–12 points depending on the day's volatility. A move that breaks out of that range and continues has a natural price target of one full range width or more. That target-to-stop ratio fits the 2:1 or better reward requirements that most serious prop traders aim for on every entry.
More importantly, ORB is inherently low-frequency. The range forms once, the breakout fires once or twice at most, and the session is done. There is no algorithm churning through 15 entries and grinding down a daily limit. You get one clean setup, one entry, and one outcome — which is exactly the kind of systematic discipline prop firm risk teams want to see from automated accounts.
Why ORB Is Naturally Prop-Firm Compatible
Defined Session Start
The range only forms during 9:30–10:00 AM ET. No overnight entries, no pre-market signals — fully RTH-bound by design.
Clear Stop Levels
Stop is placed at the opposite side of the opening range or a fixed ATR multiple from entry — never ambiguous, always defined before the trade fires.
Limited Trades Per Day
At most one long and one short signal per session. Most days produce a single trade. Overtrading — the number one cause of prop firm account failure — is structurally impossible.
Daily Kill Switch Ready
Because entries cluster at the open, a daily loss kill switch is easy to set: if the first trade hits its stop, the script stops trading for the day automatically.
How the Pine Script Implements the ORB
The script opens at 9:30 AM ET on bar close and begins recording the running high and low of every 5-minute bar. At 10:00 AM exactly — after the sixth bar closes — the opening range is locked. The range high and low are stored as horizontal reference levels and plotted on the chart so you can see exactly what the script is watching.
After 10:00 AM, the script monitors each new bar's close. A long signal fires when the close exceeds the range high by at least one ATR multiple (configurable, default 0.15x ATR) — this ATR buffer is the false-breakout filter that prevents entries on marginal 1-tick breaks that immediately reverse. A short signal fires on the mirror condition below the range low.
The stop is placed at the midpoint of the opening range on 50k accounts and at the full opposite side of the range on larger accounts. This gives the trade room to breathe while keeping worst-case loss well within firm daily limits. A configurable fixed-dollar stop override is also available for traders who prefer absolute dollar risk over range-based stops.
The RTH session filter automatically prevents the script from entering after 3:30 PM ET, closing any open position at 3:45 PM to avoid carrying into the close. The daily kill switch halts all entries if cumulative P&L drops below a set threshold — typically 80% of the firm's daily loss limit — ensuring no single bad day compounds into an account breach.
Best Timeframes for ORB
Two timeframes dominate ORB trading on futures, and the right choice depends on your account size and risk tolerance.
5-minute chart: The standard for most prop firm ORB traders. Six bars form the opening range window, giving you a well-defined high and low. Signals fire relatively quickly after 10:00 AM, often within the first 30–60 minutes of the breakout window. The downside is that 5-minute bars are noisy enough to produce more false breakouts, which is why the ATR filter matters.
15-minute chart: Better for traders who prefer less noise and wider ranges. Only two bars form the opening range, so the high and low are influenced by fewer data points — but true breakouts tend to extend further because the 15-minute chart filters out more micro-structure chop. This timeframe is particularly well-suited to MNQ and MES micro contracts where the natural dollar range is smaller.
Best Firms and Account Sizes for ORB
| Firm | Account Size | Why ORB Works Here | Recommended Contract |
|---|---|---|---|
| Apex Trader Funding | 50k | Static trailing drawdown means your winning ORB runs don't raise the floor against you. EOD model suits the single-session structure. | MES (1–2 contracts) |
| Topstep | 50k | EOD trailing drawdown — intraday excursions during the ORB don't count against trail. Soft daily loss structure gives ORB room to work. | MES (1–2 contracts) |
| MyFundedFutures | 50k | Static drawdown never moves. A single ORB win doesn't compress your cushion. 3% daily loss limit is comfortable for a 1-2 trade strategy. | MES or MNQ |
| Tradeify | 50k Growth | No hard daily loss limit on Growth eval (soft pause only). ORB's single-trade structure means you won't trigger the pause on most days. | MES (1–2 contracts) |
ORB vs Other Strategies — When It Works and When It Doesn't
ORB is a trending-day strategy. It extracts maximum value on days when the open establishes a directional bias and price follows through in one direction for the rest of the session. Strong economic data releases, FOMC days (afternoon announcements only), and earnings-driven sector moves all tend to produce clean ORB setups.
On range-bound days — when the ES or NQ chops back and forth through the opening range repeatedly — ORB struggles. A breakout fires, price moves 4 points in the right direction, then reverses and stops out. This is not a failure of the strategy; it is the nature of the market structure on that day. The ATR filter reduces but does not eliminate these false-start trades.
Compared to trend-following strategies like SuperTrend, ORB produces fewer total signals per week but typically larger average wins per signal on the days it works. Compared to mean-reversion strategies like VWAP fade, ORB has lower win rates but significantly higher average R:R. The combination of ORB plus VWAP fade — one trend strategy and one counter-trend strategy — is a popular approach among multi-strategy prop firm traders.
Performance Characteristics
Based on historical backtesting on ES continuous futures (ES1!) from 2022 through early 2026, the 30-minute ORB on the 5-minute chart shows the following characteristics across varying market regimes:
- Win rate: approximately 50–58% depending on the ATR filter threshold and market regime
- Average R:R on winning trades: 2.1:1 to 3.4:1 — true breakout days produce extended moves
- Average trades per session: 1.1 — most sessions produce exactly one signal
- Maximum consecutive losses observed: 6 (across the 2022 bear market, high-chop period)
- Months with negative expectancy: approximately 15–20% of months tested
Get the ORB Pine Script — From $50
Starter plan includes the core ORB logic ready to paste into TradingView. Pro and Custom plans add ATR filters, partial targets, and multi-account webhook support.
View Pricing Plans Audit My Existing ScriptFrequently Asked Questions
What is an Opening Range Breakout strategy?
An Opening Range Breakout strategy defines the high and low of the first 30 minutes of the RTH session (9:30–10:00 AM ET), then waits for price to close convincingly above or below that range and enters in the breakout direction. It is one of the oldest and most consistently profitable institutional trading patterns in futures markets.
Is ORB good for prop firm evaluations?
Yes — ORB is one of the best-suited strategies for prop firm evals because it is low-frequency (1–2 trades per session at most), has clearly defined stops, respects RTH session boundaries, and is easy to wrap with a daily kill switch. These characteristics address nearly every risk management concern that prop firms evaluate on.
What timeframe should I use for the opening range?
The 5-minute chart is the most common for ES and NQ. The 15-minute chart produces cleaner signals with less noise but fewer total entries. Both are included in the script with configurable range window settings on the Pro plan. Start with 5-minute if you are unsure.
Can I automate the ORB Pine Script on a prop firm account?
Yes. The script sends TradingView alerts on bar close, which connect to TradersPost to execute orders automatically in Tradovate or Rithmic. All major futures prop firms — Apex, Topstep, MFFU, Tradeify — permit automation on evaluations. Always verify the funded-account automation policy with your specific firm before connecting to a live funded account.
What is the difference between the Starter and Pro ORB plans?
The Starter plan ($50) includes the core ORB Pine Script with a 30-minute range window, bar-close confirmation, fixed stop, RTH filter, and daily kill switch. The Pro plan adds configurable range windows (15-min, 30-min, 60-min), ATR-based false-breakout filter tuning, partial profit target levels, and full TradersPost webhook payload format for multi-account setups.