Gap Trading Strategy for Forex

Gaps occur when price opens significantly different from where it closed. While less common in forex than stocks (due to 24-hour trading), forex gaps do occur—especially over weekends. This guide shows you how to trade them.

What is a Gap?

A gap is:

• A blank space on the chart
• Price "jumps" from one level to another
• Opening price different from previous close
• No trading occurred at prices in between

When Gaps Occur in Forex

Weekend Gaps

Most common forex gaps:

• Market closes Friday 5 PM New York time (ET), 01:00 or 02:00 GST on Saturday
• Opens Sunday 5 PM ET, 01:00 or 02:00 GST on Monday
• Events over weekend cause gap
• Monday morning reveals gap

News Event Gaps

During trading hours:

• Major surprise announcement
• Flash crashes
• Liquidity evaporation
• Price moves instantly

Holiday Gaps

After market closures:

• Regional holidays
• Christmas/New Year period
• Thin liquidity periods

Types of Gaps

Breakaway Gap

Gap that starts a new trend:

• Occurs at key support/resistance
• High volume/momentum
• Usually doesn't fill immediately
• Marks significant change

Continuation Gap (Runaway Gap)

Gap within an existing trend:

• Appears mid-trend
• Confirms trend strength
• May or may not fill
• Trading in trend direction

Exhaustion Gap

Gap near trend end:

• Final push in trend direction
• Often fills quickly
• Reversal follows
• Reduced momentum

Common Gap

Gap with no particular significance:

• Random price movement
• Usually fills quickly
• Not actionable usually

Gap Fill Theory

Why Gaps Fill

Gaps tend to fill because:

Liquidity Return:

• No orders filled in gap zone
• Unfilled orders attract price
• Market seeks equilibrium

Technical Traders:

• Many expect gaps to fill
• Collective trading creates fill
• Self-fulfilling prophecy

Mean Reversion:

• Extreme move (gap)
• Tendency to revert
• Often claimed, not established

Gap Fill Tendencies

Commonly observed, though not a measured edge:

• Many weekend gaps fill within days
• Smaller gaps more likely to fill
• Large gaps may not fill or take longer

Trading Gap Fills

Strategy 1: Fade the Gap

Concept: Trade for gap to fill.

Weekend Gap Up (Sell Setup):

1. Sunday open gaps higher
2. Wait for first hour to settle
3. Enter short toward Friday close
4. Stop above Sunday high
5. Target: Friday closing price (gap fill)

Weekend Gap Down (Buy Setup):

1. Sunday open gaps lower
2. Wait for first hour to settle
3. Enter long toward Friday close
4. Stop below Sunday low
5. Target: Friday closing price (gap fill)

Strategy 2: Trade Gap Continuation

Concept: Trade with the gap.

Gap Up (Buy Setup):

1. Strong gap up occurs
2. Analyze why (fundamental)
3. Wait for pullback
4. Enter long on pullback support
5. Target: New highs beyond gap

Gap Down (Sell Setup):

1. Strong gap down occurs
2. Analyze why (fundamental)
3. Wait for rally
4. Enter short on rally resistance
5. Target: New lows beyond gap

Weekend Gap Trading Rules

Rule 1: Analyze the Cause

Before trading:

• What caused the gap?
• News event?
• Political development?
• Will cause persist?

Rule 2: Wait for Market Open

Don't trade immediately:

• Spreads wide at open
• Volatility high
• Wait 30-60 minutes
• Let market settle

Rule 3: Consider Gap Size

Small vs large gaps:

Small Gaps (Under 30 pips):

• Often fill
• Faster fill expected
• Still no guarantee of a fill

Large Gaps (Over 50 pips):

• May indicate real change
• Fill uncertain
• Need stronger reason to fade

Rule 4: Check Higher Timeframe

Gap direction vs trend:

• Gap with trend: May continue
• Gap against trend: More likely to fill
• Consider context

Entry Techniques

Wait for Confirmation

Don't enter at market open:

1. Wait for market to calm
2. Look for reversal signal
3. Enter on candle close
4. More reliable entry

Limit Order Entry

Set limit order at key level:

• Support/resistance within gap
• May get better entry
• May not fill

Scaled Entry

Enter in portions:

• 50% at first signal
• 50% on confirmation
• Average entry price

Stop Loss Placement

For Gap Fade Trades

Gap Up Short:

• Stop above Sunday open high
• Or above gap zone completely

Gap Down Long:

• Stop below Sunday open low
• Or below gap zone completely

Consider the Cause

If fundamental reason:

• Stop may need more room
• Gap may extend before filling
• Size position accordingly

Take Profit Targets

Full Gap Fill

Target Friday close:

• Complete fill
• Conservative approach
• Clear, defined target

Partial Fill

Target 50-75% of gap:

• Faster to reach
• Reached more often than a full fill
• Leave some on table

Beyond the Gap

If gap indicates trend:

• Target beyond gap
• Use trend following exits
• Trail stop

Gap Trading Risks

Gap Doesn't Fill

Not all gaps fill:

• Fundamental change
• Trend acceleration
• Extended period until fill

Gap Extends

Gap continues in same direction:

• Weekend news continues
• Monday follow-through
• Stop hit quickly

Wide Spreads

At market open:

• Spreads much wider than normal
• Entry cost higher
• Account for this

Slippage

Fast-moving market:

• Stops may not fill at exact price
• Orders may slip
• Factor into risk

When NOT to Trade Gaps

Major Fundamental Event

Real change in fundamentals:

• Central bank action
• Major political event
• Economic crisis
• Don't fade these blindly

Very Large Gaps

Extreme moves:

• Gap over 100 pips
• Indicates significant change
• Fill may take very long
• Higher risk to fade

Against Strong Trend

Gap in trend direction:

• Trend acceleration
• Fill less likely soon
• Better to trade with gap

Low Liquidity Conditions

Holidays or thin markets:

• Poor execution
• Erratic moves
• Avoid trading

Gap Trading Example

Weekend Gap Scenario

Friday Close:

• EUR/USD: 1.1000

Saturday/Sunday:

• European political news
• Risk sentiment negative

Sunday Open:

• EUR/USD: 1.0950 (50-pip gap down)

Trade Decision:

• Analyze: Political uncertainty real but contained
• Technical: Gap at minor support
• Decision: Wait for confirmation to buy for fill

Execution:

• Wait until 6 PM ET (1 hour after the open; 02:00 or 03:00 GST on Monday)
• Price stabilizes at 1.0960
• Bullish candle forms
• Enter long at 1.0965
• Stop: 1.0925 (below Sunday low)
• Target: 1.1000 (gap fill)
• Reward-to-risk: 35 pips against 40 at risk, under 1 to 1, a weak trade on paper
• Size: 1% of a $10,000 account = $100 ÷ 40 pips = $2.50 per pip, or 0.25 lots

Result:

• Gap fills Tuesday
• Target hit
• +35 pips ($87.50 at that size)

Illustrative figures only, not a forecast.

Key Takeaways

• Forex gaps occur mainly over weekends
• Smaller gaps more likely to fill
• Always analyze why gap occurred
• Don't trade immediately at open—wait for calm
• Consider gap size and direction vs trend
• Use confirmation before entering
• Place stops beyond gap extremes
• Fundamental gaps may not fill quickly
• Gap trading works best in ranging conditions

What's Next?

Next, learn how to choose a forex broker.

This article is for educational purposes only and does not constitute financial advice.