The market is faster than a single-factor story.
- ×Gamma and theta change rapidly into expiry.
- ×A sweep can be directional, a hedge or one leg of a spread.
- ×A level that mattered in the morning can lose validity as IV and the chain change.
For SPX 0DTE traders
When gamma accelerates, seeing price move is not enough.
Bring hedge pressure, Gamma Flip bands, liquidity and evidence time into one view — then form your own hypothesis with the structure in context.
SDPI+62Constructive pressure
09:3011:006,432.98 SPX14:0016:00
Gamma regime-1.26BEstimated short gamma
Reaction zones
6,500Call Wall
6,415–6,425Flip Band
6,355Put Wall
Evidence Score: 77/100Illustrative simulation; not performance-calibrated
Turn movement into an evidence network.
- SDPI frames pressure direction, magnitude and persistence on one scale.
- Gamma Walls appear as dynamic reaction zones with sensitivity bands.
- Evidence Score distinguishes agreement from conflict instead of projecting false confidence.