FTB-C000035 / Indicator

McClellan Volume Summation Index

A cumulative breadth-volume index that adds each ready McClellan Volume Oscillator value to its prior level.

Also known asVolume Summation IndexVSI

Advanced Formula defined 1 linked topicPublished

Definitions

In plain terms

This index keeps a running total of the volume oscillator, so each ready daily oscillator value raises or lowers the accumulated volume-breadth path.

Technical

For ready volume oscillator MVO_t, update VSI_t = VSI_(t-1) + MVO_t; the documented volume convention and this pilot use a zero pre-output cumulative state.

Scope

The volume recurrence and zero starting convention are sourced; eligible volume, units, adjustment basis, initialization, precision, revisions, and missing sessions remain explicit package policies.

Formula

VSI_t = VSI_(t-1) + MVO_t; VSI_pre-output = 0
LaTeX: VSI_t=VSI_{t-1}+MVO_t,\quad VSI_{\mathrm{pre}}=0
SymbolMeaningUnit
VSI_tCurrent Volume Summation Indexshare-volume units
VSI_(t-1)Previous Volume Summation Indexshare-volume units
MVO_tReady McClellan Volume Oscillatorshare-volume units

Output unit: share-volume units

Examples

  • Starting from zero, volume oscillator increments of 1200 and negative 500 produce index levels 1200 and 700.

Common misconceptions

  • The cumulative volume level is path-dependent and cannot be interpreted without compatible input and starting conventions.

Concept relationships

Prerequisites

Broader concepts

Derived from

Where this concept is used

Evidence and governance

  1. A Subtle Message in the Volume Summation Index McClellan Financial Publications · first party technical publication

    Supports: preferred label, short definition, technical definition, formula, units

    Limits: The article's market interpretation is excluded as evidence of forecasting, causation, thresholds, or profitable trading behavior.

  2. Understanding Oscillators and Other Indicators McClellan Financial Publications · first party technical publication

    Supports: historical attribution, variant distinction

    Limits: Historical publication conventions do not define a universal modern volume feed, adjustment basis, revision policy, or predictive result.

Reviewed by
fintech-builder-owner-approved
Last reviewed
2026-07-26
Next review
2027-07-26
Record status
published