Gap Trading Strategy Guide
Gap trading exploits opening price jumps between sessions by identifying gap size, direction bias, and either mean-reverting gaps back to previous close or riding gap continuation moves.
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Forex
Intraday
Intermediate
Entry & Exit Rules
Entry Rules
- Identify gap at session open (London 08:00 GMT, New York 13:00 GMT)
- Measure gap size in pips
- Mean reversion: enter pullback back toward previous close
- Continuation: enter on break above/below gap high/low
- Confirm direction with first 5 minutes of session price action
Exit Rules
- Mean reversion: target previous close or support/resistance
- Continuation: target trend continuation or daily resistance
- Stop-loss: opposite side of gap
- Time-based: exit if not filled by mid-session
Key Metrics to Track
What to Record
Risk Management
Risk 1% per gap trade. Large gaps (50+ pips) often mean-revert; small gaps (10-20 pips) more often continue. Place stops beyond gap extremes. Early morning gaps often gap-fill by end of session, creating clear mean-reversion targets.
Gap Trading: Quick Profits from Session Transitions
Gap trading exploits the price jumps that occur when one forex session closes and the next opens. Between London close and New York open, or overnight between New York close and London open, price can jump significantly, creating “gaps” on daily charts.
These gaps are not random. They occur at predictable times, follow statistical patterns, and often resolve (fill) in predictable ways. Gap traders either fade the gap (bet it will fill) or ride the gap (bet it will continue).
Understanding Gaps
Why Gaps Occur
Gaps happen when new information arrives between sessions or market participants shift. London close at 16:00 GMT is often the end of European trading. New York open at 13:00 GMT is 21 hours later (for winter) and 20 hours later (for summer). In that gap, central banks announce policy, economic data releases, or geopolitical events. Price reopens at a different level.
Gap Size Distribution
Most forex gaps fall into three categories:
- Small gaps (10-20 pips): Often noise; tend to continue in the gap direction
- Medium gaps (20-40 pips): Balanced; could mean-revert or continue
- Large gaps (40+ pips): Usually significant information; tend to mean-revert as profit-takers close trades
Pairs That Gap Most
Major pairs (EURUSD, GBPUSD, USDJPY) gap most consistently. Exotic pairs gap less frequently. Your journal will show which pairs on your watchlist are worth gap trading.
The Gap Trade Types
Mean Reversion Gap Trade (Fade the Gap)
Setup: Price gaps up 50 pips at London open. This is large. History shows large gaps usually fill.
Entry: Wait 30 minutes for initial spike to exhaust. Enter short (fade the gap) on pullback toward previous close.
Target: Previous close price (where gap started).
Stop: Above gap high (invalidation if gap continues).
Exit: At previous close (gap-fill) or after profit target hit.
Example: EURUSD closes 1.0900. Opens 1.0950 (50 pip gap up). Fades at 1.0940 targeting 1.0900. Stop 1.0960. Risk 20 pips, Reward 40 pips = 2:1 R:R.
Gap Continuation Trade (Ride the Gap)
Setup: Price gaps up 15 pips at London open. This is small. History shows small gaps continue.
Entry: Enter long on breakout above the gap high.
Target: Next resistance level or trend continuation.
Stop: Below gap low (invalidation if reversal).
Exit: At target or trailing stops.
Example: GBPUSD closes 1.2800. Opens 1.2815 (15 pip gap). Enters long 1.2820 targeting 1.2850. Stop 1.2810. Risk 10 pips, Reward 30 pips = 3:1 R:R.
Gap Trading by Session
Different sessions produce different gap characteristics:
London Open Gap (08:00 GMT)
- Occurs between Asia close and Europe open
- Driven by European economic data and Asia overnight moves
- Average gap: 20-30 pips
- Tendency: Often mean-reverts as London traders unwind Asia moves
- Best pairs: EURUSD, EURGBP
New York Open Gap (13:00 GMT)
- Occurs between London afternoon and New York open
- Driven by US economic data and European afternoon moves
- Average gap: 25-40 pips
- Tendency: Mixed; depends on news
- Best pairs: EURUSD, GBPUSD, USDJPY
Overnight Gaps (After NY Close to London Open)
- Occurs Friday to Monday or overnight weekdays
- Driven by geopolitical events, overnight Asia moves
- Average gap: 30-50 pips
- Tendency: Larger gaps often mean-revert
- Best pairs: All majors
Critical Gap Trading Journaling
Most gap traders fail because they trade all gaps the same way without considering size or session.
Poor Journal Entry: “Gap trade EURUSD, +80 pips”
Better Journal Entry:
- Gap size: 35 pips (medium)
- Gap direction: Up (London open)
- Pair: EURUSD
- Session: London open at 08:00 GMT
- Entry type: Mean reversion (faded gap on pullback to 1.0940)
- Entry price: 1.0940
- Stop-loss: 1.0960 (above gap high)
- Target: 1.0905 (previous close, gap-fill level)
- Outcome: Filled at 1.0910, +30 pips
- Analysis: Medium-sized gap mean-reverted as expected; good risk-reward setup
After 40+ gap trades journaled this way:
- “EURUSD gaps at London open average 28 pips. 65% of these mean-revert. Fading is my most profitable approach.”
- “GBPUSD gaps are equally split: 48% continue, 52% mean-revert. Gap size matters: gaps under 15 pips continue 65%, gaps over 35 pips revert 70%.”
- “Trading gaps immediately at open (first 5 minutes) has only 42% win rate. Waiting 15-30 minutes for pullback improves to 58% win rate.”
Using PipJournal’s AI co-pilot, you can track:
- Win rate by gap size (small vs medium vs large)
- Win rate by session (London open vs New York open)
- Win rate by pair (which pairs gap most tradeable)
- Win rate: mean reversion vs continuation by gap size
Common Gap Trading Mistakes
Trading Gaps Too Early: Entering immediately at open while volatility is extreme. Wait 15-30 minutes for initial spike to exhaust before entering. Your journal will show if early entries have lower win rates than delayed entries.
Ignoring Gap Size: Small gaps behave differently than large gaps. Small gaps continue; large gaps mean-revert. Treating all gaps the same loses money. Track gap size and adjust strategy accordingly.
Holding Too Long: Gaps often resolve within 1-2 hours. Holding all day hoping for more pips leads to reversals and losses. Set profit targets at gap-fill level or previous resistance and close at target.
Trading Overnight or Geopolitical Gaps: Gaps caused by overnight news or geopolitical events are unpredictable. Stick to regular session gaps.
Gap Trading Checklist
Before entering a gap trade:
- Is the gap size in your tradeable range (10-50 pips)?
- Have I waited for initial open volatility to settle?
- Does the gap size suggest mean-reversion or continuation?
- Is my target at gap-fill level (mean reversion) or next resistance (continuation)?
- Is my stop-loss on opposite side of gap?
- Have I sized using position sizing?
- Am I trading a pair with tradeable gap patterns?
Building Your Gap Edge
Expert gap traders develop:
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Pattern Recognition: Spotting gaps at open and instantly categorizing size
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Pair Specialization: Knowing which pairs gap most consistently
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Session Awareness: Understanding gaps behave differently by session
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Size-Based Strategy: Using different approaches for small vs large gaps
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Timing: Knowing when to enter (immediately vs after pullback) based on gap size
Your journal is your gap trading laboratory. Track gap size by pair and session, then measure whether size predicts mean-reversion or continuation. Within 50 gap trades, you’ll develop an instinct for tradeable gaps that becomes automatic.
Master gap trading, and you’ll have a reliable daily income strategy from the predictable price action around session opens.
How PipJournal Helps
Strategy Tagging
Tag every trade with this strategy and track win rate, expectancy, and P&L by strategy over time.
Rule Compliance
Log whether you followed entry and exit rules. Spot when rule-breaking costs you money.
Performance Analytics
See which market conditions produce the best results for this strategy with automatic breakdowns.
Mistake Detection
AI flags pattern-breaking trades so you can stay disciplined and refine your edge.
What Traders Say
"I traded every gap without considering size. PipJournal showed gaps under 15 pips rarely filled; gaps 30+ pips filled 75% of the time. Now I only fade large gaps and ride small gaps. Win rate jumped from 44% to 59%."
"London open gaps on EURUSD were highly predictable in my data. PipJournal tracked gap size by session and pair. EURUSD gaps from London open averaged 25 pips and filled 68% by end of London session. Built a system around that pattern."
Frequently Asked Questions
What is a gap in forex?
A gap occurs when one session closes at a price and the next session opens at a significantly different price, leaving a visible gap on the chart. Forex gaps typically occur at London open (08:00 GMT) and New York open (13:00 GMT).
Are forex gaps as reliable as stock gaps?
Forex gaps are smaller than stock gaps (5-50 pips vs 50-300 pips) but follow similar behavior: large gaps tend to mean-revert, small gaps tend to continue. Trading gaps is similar between forex and stocks.
Do all gaps fill?
No, but statistically about 70% of gaps do fill within the same trading session. However, size matters: 50+ pip gaps fill 80% of the time; 10-20 pip gaps only fill 40% of the time.
Should I trade gap mean-reversion or continuation?
That depends on gap size. Large gaps (40+ pips) mean-revert 75% of time. Small gaps (15-20 pips) continue 60% of time. PipJournal tracks which method works best for your specific pairs.
What pairs have the most tradeable gaps?
Major pairs (EURUSD, GBPUSD, USDJPY) have largest gaps. Exotic pairs have smaller gaps. Your journal will show which pairs on your watchlist have the most consistent gap behavior.
How does PipJournal help gap traders?
PipJournal tracks gap size, session, pair, direction, and outcome. After 40+ gap trades, you'll see which sessions produce tradeable gaps and which pairs have the most predictable gap behavior.
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