FTB-C000602 / Implementation concept

ZigZag Up Leg

ZigZag Up Leg is the state in which the machine tracks a rising provisional high.

Advanced 1 linked topicEvidence-reviewed

Definitions

In plain terms

Higher closes extend the provisional high; a sufficient decline confirms it.

Technical

During an up leg, a strictly higher close replaces the provisional high; a decline of at least tau after min_bars confirms the high.

Scope

The active up leg does not imply a permanent trend or future continuation.

Examples

  • A reviewer computes ZigZag Up Leg on a small deterministic fixture and checks timing, units, and boundary behavior before publication.

Common misconceptions

  • The active up leg does not imply a permanent trend or future continuation.

Concept relationships

Prerequisites

Related

Required by

Where this concept is used

Tutorials planned

These catalogued topics use this concept, but their complete build has not shipped yet.

  • D08-F01-A02 Important

Evidence and governance

  1. LEAN ZigZag source QuantConnect · first party technical publication

    Supports: preferred label, short definition, technical definition

    Limits: A maintained implementation is evidence for one convention, not a universal market rule.

  2. Pine Script repainting concepts TradingView · official platform documentation

    Supports: preferred label, short definition, technical definition

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

  3. Closing Price Investor.gov · official standard

    Supports: preferred label, short definition, technical definition

    Limits: A close is not automatically an adjusted close and may vary by market session convention.

Reviewed by
fintech-builder-batch-011
Last reviewed
2026-08-09
Next review
2027-08-09
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.