Session Volume Profile Sniffer: HVN & Rejection Zones

A simple tool built for traders who rely on intraday volume structure.

What this script does

This script tracks volume distribution inside a selected session and highlights two key price levels:

• High Volume Nodes (HVNs) — areas where price spent time building heavy participation.
  
• Low Volume Nodes (LVNs) — thin zones where price moved quickly with very little interest.
  

Instead of plotting a full profile, this tool gives you the exact rejection-level lines you usually hunt manually.

Why these levels matter

• HVN → price tends to react, stall, or flip direction
  
• LVN → price often rejects strongly since liquidity is thin
  
• Rejection patterns around these areas give clean entry signals
  
• Positioning trades around HVN/LVN helps filter noise in choppy sessions
  

This script removes the trouble of drawing profiles, counting bins, or guessing node levels. Everything is calculated inside the session you choose.

How the detection works

Inside your session window, the script:
1. Tracks each tick-based price bucket
2. Accumulates raw volume for every bucket
Identifies:

• HVNs = buckets with volume above a tier
  
• LVNs = buckets with volume below a tier
  

3. Prints each level as a single clean line
4. Generates:

• Long signal → bounce from LVN
  
• Short signal → rejection from HVN
  

Built-in exits use ATR-based conditions for quick testing.

Features

• Session-based volume mapping
  
• HVN + LVN levels drawn automatically
  
• Entry triggers based on rejection
  
• ATR exits for experimental backtests
  
• Clean, minimal visual output
  

Best use cases

• Intraday futures
  
• Index scalping
  
• FX sessions (London / NY)
  
• Crypto sessions (user-timed)
  
• Anyone who trades around volume structure
  

Adjustable settings

• Session window
  
• Volume bin size
  
• HVN multiplier
  
• LVN multiplier
  
• Enable/disable zone lines
  

This keeps it flexible enough for both scalpers and slow-paced intraday setups.

Important note

This script is built for study + idea testing.
It is not intended as a final system.
Once you identify how price behaves around these nodes, you can blend this tool into your own setup.