Session Volume Profile - Asia London NY

Session Volume Profile – Asia, London, NY

Description
OVERVIEW

Session Volume Profile is a technical analysis indicator designed to visualize how volume is distributed during the three primary global trading sessions: Asia, London, and New York. The script separates intraday volume data into time-defined sessions to help traders observe where trading activity concentrated and how value areas evolve as liquidity transitions between regions.

This indicator is intended for market structure and contextual analysis, not signal generation.

TECHNICAL OUTPUT

For each enabled session, the indicator calculates and displays:

Point of Control (POC)
The price level with the highest traded volume during the session.

Value Area High / Low (VAH / VAL)
The price range containing a user-defined percentage of total session volume (commonly 70%).

Session Volume Histogram
A horizontal volume-at-price visualization showing relative participation across price levels, highlighting high- and low-volume areas.

CALCULATION FRAMEWORK

Session Segmentation
Sessions are identified using exchange-based time boundaries. Each session is processed independently to prevent overlap and ensure clean separation of volume data.

Volume Binning
Intraday volume is allocated into discrete price buckets using an array-based structure. The resolution of these buckets is controlled by the Histogram Density input.

Value Area Expansion
The script identifies the session’s POC and expands outward in both directions until the selected percentage of total volume is reached, defining the Value Area High and Low.

HOW TO USE

Session Context
Observe how price reacts to prior-session POC and value areas when a new session begins.

Customization Controls
Individual sessions can be enabled or disabled, and visual opacity can be adjusted to maintain clarity on lower timeframes.

Session Awareness
An optional countdown timer displays remaining session time to help traders stay aware of upcoming liquidity transitions.

DESIGN NOTES

This indicator visualizes historical volume distribution only. It does not identify specific participants or predict future price behavior. All calculations are derived exclusively from price and volume data available on the chart.

DISCLAIMER

This script is provided for educational and analytical purposes only. It does not generate trade signals, alerts, or financial advice. Historical volume distributions do not guarantee future market behavior.