Opening Range Gap (ORG) — Futures (RTH)
The Opening Range Gap (ORG) in Regular Trading Hours (RTH) futures is the price difference between the previous RTH session’s close (≈4:14 PM EST) and the next trading session’s RTH open (9:30 AM EST). It represents an imbalance or liquidity void that often acts as a reference for price reactions, retracements, and support/resistance behavior.
Definition
ORG is defined as the gap created on RTH charts when the RTH open price is different from the previous RTH close price. This gap zone, and its midpoint (CE, Consequent Encroachment), may attract price back to it during the trading session and act as dynamic support or resistance.
Why It Matters
ORG matters because it highlights a zone of unfilled RTH price action that can draw price back for retests before continuation or reversal. It is widely used in futures trading to gauge intraday imbalance and to set reference levels for support, resistance, and potential entries when aligned with structure confirmation.
How to Identify
- Set chart session to Regular Trading Hours (RTH) in New York time (EST/EDT).
- Find the closing price of the last RTH candle (typically at 4:14 PM EST).
- Find the opening price of the first RTH candle of the next session (9:30 AM EST).
- If the RTH open price differs from yesterday’s RTH close, mark the gap zone between these two prices.
- Calculate the 50% midpoint of the gap zone — this is the Consequent Encroachment (CE).
How to Trade
- Establish higher timeframe trend (e.g., Daily/4H) before trading ORG levels.
- If price opens above previous RTH close (premium gap) and bias is bullish, wait for retracement into ORG or CE with structure confirmation for a long entry.
- If price opens below previous RTH close (discount gap) and bias is bearish, wait for retracement into ORG or CE with bearish confirmation for a short entry.
- Use lower timeframe structure confirmation (MSS/BOS, candlestick rejection) prior to entry — ORG is a reference, not sole trigger.
- Place invalidations beyond the ORG extreme opposite of bias and set targets at nearby liquidity clusters (swing highs/lows, EQ levels).
Common Confusions
IF gap measured on Regular Trading Hours only (RTH close vs RTH open) THEN it’s ORG; IF gap measured including Electronic Trading Hours (overnight) THEN it’s a CME/ETH gap.
IF price does not retrace toward CE or gap then the gap may remain unfilled — treat the gap as reference levels with confirmation, not guaranteed fill.
IF measuring the first few minutes high/low after open (traditional ORB) THEN this is different; RTH ORG specifically measures the gap between RTH close and next RTH open.
IF price reacts at midpoint (CE), treat it as primary reaction level, but still consider the gap extremes (org_high/org_low) for invalidation and support/resistance contexts.
Pre-Trade Checklist
- Prior RTH close identified (yesterday's close)?
- Today's RTH open identified?
- ORG zone marked (top/bottom boundary)?
- CE (midpoint/50%) identified?
- Watch for hold vs fill behavior?
- ORG aligns with FVG/OB or PD arrays?
- RTH open volatility window timing appropriate?
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Educational resource only. Not financial advice. Trading involves substantial risk of loss.