Session High Low Indicator: Multi-Session Support & Resistance Tracking
Track session highs and lows across 5 global trading sessions. Identify key support and resistance levels from London, New York, Tokyo, Sydney, and Frankfurt.
Profabighi Capital Research Team
January 13, 2026
Trading Risk Warning
Trading Risk Warning: Trading involves substantial risk of loss and is not suitable for all investors. Past performance does not guarantee future results. You should carefully consider your financial situation and consult with financial advisors before making any investment decisions.
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Understanding how price interacts with session extremes is fundamental to intraday trading success. The Session High/Low Marker Advanced indicator provides comprehensive tracking across five major global trading sessions, enabling traders to identify critical support and resistance levels that emerge from institutional trading activity.
What is the Session High Low Indicator?
This indicator automatically detects and marks the highest and lowest prices reached during London, New York, Tokyo, Sydney, and Frankfurt sessions. These levels reveal the boundaries within which institutional participants have been willing to trade, creating natural zones where price often finds support or resistance.
Key Features
- 5 Global Sessions: London, New York, Tokyo, Sydney, Frankfurt
- Dual Display Modes: Live tracking or end-of-session marking
- Color-Coded Levels: Distinct colors for each session
- Information Table: Centralized display of all session levels
- Automated Alerts: Notifications for level breaks
Session Times (UTC)
| Session | Start | End | Characteristics |
|---|---|---|---|
| London | 08:00 | 17:00 | Highest forex volume |
| New York | 13:00 | 22:00 | Major moves, overlap with London |
| Tokyo | 00:00 | 09:00 | Asian session, JPY pairs |
| Sydney | 22:00 | 07:00 | Spans midnight, AUD pairs |
| Frankfurt | 07:00 | 16:00 | European pre-London |
How Session Detection Works
Session State Tracking
The indicator identifies session boundaries using UTC timestamps, comparing each bar's time against predefined session start and end times. Boolean variables track whether the current bar falls within each session's active period.
High/Low Calculation
At session start:
- Initialize session high to current bar's high
- Initialize session low to current bar's low
- Record bar index for level placement
During active session:
- Compare each new bar's high against session high
- Update session high if new bar reaches higher level
- Compare each bar's low against session low
- Update session low if new bar reaches lower level
Live Mode vs End-of-Session Mode
Live Mode: Continuously updates visual elements during active sessions. Labels and lines refresh as new extremes form, providing real-time feedback about range expansion.
End-of-Session Mode: Displays levels only after sessions close, showing final ranges without intraday updates. Uses dashed lines to distinguish completed sessions from active ones.
Trading Strategy Implementation
Breakout Trading
Session highs represent maximum prices where institutional participants were willing to buy. When price approaches a session high from below:
- Rejection: Bearish candlestick patterns or increased selling volume suggests resistance will hold
- Breakthrough: Strong bullish momentum with increased volume indicates breakout, often triggering continuation moves
Support Trading
Session lows mark minimum prices where buying interest prevented further decline:
- Bounce: Price approaching session low often produces buying opportunities with stops below the low
- Breakdown: Failure of session low support often accelerates selling as stops trigger
Session Overlap Trading
The London-New York overlap (13:00-17:00 UTC) represents the highest liquidity period in forex markets. During overlaps:
- Monitor both session levels simultaneously
- Watch for breaks of earlier session extremes
- Expect increased volatility and larger moves
Range Analysis
| Range Type | Interpretation | Strategy |
|---|---|---|
| Wide Range | High volatility, active institutions | Breakout approaches |
| Narrow Range | Low volatility, consolidation | Mean reversion tactics |
| Expanding | Increasing momentum | Trend following |
| Contracting | Decreasing momentum | Wait for breakout |
Settings and Configuration
Display Options
| Setting | Default | Description |
|---|---|---|
| Show London | ✓ | Enable London session tracking |
| Show New York | ✓ | Enable New York session tracking |
| Show Tokyo | ✓ | Enable Tokyo session tracking |
| Show Sydney | ✗ | Enable Sydney session tracking |
| Show Frankfurt | ✗ | Enable Frankfurt session tracking |
| Show Table | ✓ | Display session levels table |
| Live Mode | ✗ | Update levels during active sessions |
Style Customization
Each session has independent color and line width settings:
- London: Blue (#47abfd), Width 2
- New York: Red (#ff6565), Width 2
- Tokyo: Yellow (#ffff00), Width 2
- Sydney: Green (#75ff79), Width 2
- Frankfurt: Orange (#ff9f43), Width 2
Table Colors
| Element | Color | Purpose |
|---|---|---|
| Accent | Yellow | Headers and highlights |
| Bull | Lime | Session highs |
| Bear | Red | Session lows |
| Neutral | Gray | Inactive/N/A values |
Visualization
Level Display
- Solid Lines: Active session levels (live mode)
- Dashed Lines: Completed session levels
- Labels: Session name + High/Low at exact bar location
- Extension: Lines extend right for ongoing reference
Information Table
Positioned at middle-right, the table displays:
- Session name with emoji identifier
- Current high value (green background)
- Current low value (red background)
- N/A for sessions without data
Alert System
Level Break Alerts
- London High Break: Price crosses above London session high
- London Low Break: Price crosses below London session low
- (Similar alerts for all five sessions)
Session Start Alerts
- London Session Start: Notification when London session begins
- (Similar alerts for all five sessions)
Use Cases Across Trading Approaches
Intraday Scalping
Use session levels as immediate support/resistance references:
- Enter short on rejection from session high
- Enter long on bounce from session low
- Target moves to session midpoint
Breakout Trading
Focus on decisive breaks of session extremes:
- Wait for strong break with volume confirmation
- Place stops below broken high (for longs)
- Use session range for target projection
Range Trading
During consolidation periods:
- Buy at session lows, sell at session highs
- Works best during low-volatility sessions
- Avoid during session overlaps
Swing Trading
Use completed session levels for multi-day analysis:
- Previous day's NY session high often acts as resistance
- Session lows provide support for position management
- End-of-session mode preferred for cleaner analysis
Common Mistakes to Avoid
Ignoring Session Overlaps: The London-New York overlap produces the day's most significant moves. Don't treat all sessions equally.
Trading Against Fresh Levels: Newly established session highs/lows are more likely to hold than repeatedly tested levels.
Neglecting Volume Confirmation: Level breaks without volume often fail. Wait for confirmation before entering.
Over-Cluttering Charts: Enable only the sessions relevant to your trading pairs and style.
Key Takeaways
- Tracks high and low levels across five major global trading sessions
- Implements dual-mode functionality with live tracking and end-of-session marking
- Employs distinct color coding for immediate visual identification
- Provides centralized information table for rapid level comparison
- Generates automated alerts for level breaks and session starts
- Creates natural support and resistance zones based on institutional activity
- Facilitates session range analysis for volatility assessment
FAQ
Q: Which sessions should I enable for forex trading?
A: For major pairs, enable London and New York. Add Tokyo for JPY pairs and Sydney for AUD/NZD pairs.
Q: Should I use live mode or end-of-session mode?
A: Live mode for active intraday trading, end-of-session mode for swing trading and cleaner historical analysis.
Q: How do I trade the London-New York overlap?
A: Monitor both session levels. Breaks of London highs/lows during NY session often produce extended moves.
Q: Can I use this for crypto trading?
A: Yes, crypto trades 24/7 but still shows distinct behavior during traditional forex sessions due to institutional participation.
Q: Why do some sessions show N/A in the table?
A: Sessions display N/A until they've had at least one bar of data. This is normal at the start of a new session.