FTB-C000692 / Formula component

Inverse Shoulder Comparability

Inverse Shoulder Comparability is the normalized spread test that makes the two outer lows comparable shoulders.

Intermediate 1 linked topicEvidence-reviewed

Definitions

In plain terms

The first and last lows should form a similar level while the head is meaningfully lower.

Technical

shoulder_spread=(max(left_shoulder,right_shoulder)-min(...))/mean(shoulders) and it must be <= 0.025.

Scope

Comparable shoulders do not imply a guaranteed support level.

Examples

  • A reviewer computes Inverse Shoulder Comparability on a deterministic close fixture and checks pivot timing, threshold equality, neckline behavior, and rejection diagnostics before publication.

Common misconceptions

  • Comparable shoulders do not imply a guaranteed support level.

Concept relationships

Prerequisites

Related

Required by

Where this concept is used

Evidence and governance

  1. Foundations of Technical Analysis: Computational Algorithms, Statistical Inference, and Empirical Implementation Lo, Mamaysky, and Wang · first party technical publication

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

    Limits: The paper's smoothing, sample, and empirical design are not copied into this package and do not validate its thresholds.

  2. Pine Script repainting concepts TradingView · official platform documentation

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

    Limits: Platform display behavior does not establish financial usefulness or predictive value.

  3. scipy.signal.find_peaks SciPy · first party technical publication

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

    Limits: This retrospective signal function is not itself a causal OHLC pivot detector.

  4. Pine Script pivot techniques TradingView · official platform documentation

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

    Limits: The package freezes its own equality, separation, and OHLC policies rather than claiming one universal pivot definition.

Reviewed by
fintech-builder-batch-012
Last reviewed
2026-08-10
Next review
2027-08-10
Record status
evidence reviewed

This record is evidence-reviewed and readable, but not yet promoted to published — it is served noindex,follow and excluded from the sitemap.

Written by

Fintech engineer building market-data and financial systems, and the author of every article, glossary record, and reference implementation on The Fintech Builder.