Chapter 9 · Reference
Glossary
Canonical definitions for metrics and platform terms used across every chapter. Searchable index with links to related tool guides.
How to use this reference
Terms here appear across SPX Slayer, Thermal, HELIX, and Night Hawk documentation. When a chapter mentions GEX, IVP, or SCANNING, return here for the precise definition.
For workflow context, start with Getting Started and the tool-specific chapters linked below.
Terms A–Z
Dealer Greeks
- CHARM
- Rate of change of delta with respect to time. Drives dealer hedge adjustments into expiry — material on 0DTE.
- DEX
- Aggregate dealer delta exposure — directional hedge the book must hold.
- GEX
- Gamma exposure by strike. Positive GEX stabilizes; negative GEX amplifies.
- VEX
- Sensitivity of dealer delta to IV changes — critical around events.
Structural levels
- Call Wall
- Largest positive gamma concentration above spot — mechanical resistance zone.
- Put Wall
- Largest negative gamma concentration below spot — fragile support.
- Gamma Flip
- Price where aggregate dealer gamma changes sign — regime boundary.
- King node
- Highest absolute GEX strike of the session.
Platform
- Evening Edition
- Night Hawk nightly publication for the next session.
- SCANNING
- SPX Slayer engine state — gates not aligned.
- RTH
- Regular Trading Hours, 9:30 AM – 4:00 PM ET.