Session Archive
SPXXL's public database of every classified trading session — a searchable, transparent record of engine accuracy across 297+ trading days.
The SPXXL Session Archive is a public, searchable database of every SPX 0DTE session classified by the engine. It serves as a transparent, auditable record of classification accuracy.
Each archived session includes:
- ●Session date and day of week
- ●Session type classification (one of six types)
- ●Confidence score (0-100%)
- ●All six session type scores (showing the probability distribution)
- ●Recommended structure
- ●Risk level and volatility state
- ●Full OHLCV market data
- ●Initial balance analysis
- ●VIX and ATM IV levels
- ●Outcome grade (Correct, Partial, or Missed)
- ●Outcome notes and structure verdict
The archive enables:
- ●Historical accuracy analysis by session type
- ●Confidence calibration study — are high-confidence calls more accurate?
- ●Seasonal pattern detection — which session types cluster in which market conditions?
- ●Strategy backtesting — could you have profited from the engine's recommendations?
Access the full session archive at spxxl.com/sessions. Each session has its own page with complete data and structured data for search engines.
Related Terms
SPXXL's composite accuracy score measuring classification quality, structure recommendations, and calibration across confidence levels.
SPXXL's public accuracy dashboard showing win rate, streak data, and Engine Edge score — graded daily at 4:05 PM ET.
A session where price oscillates around a central value area with no directional conviction — the most common session type for SPX.
A session with sustained directional movement from open to close — price trends in one direction with minimal retracement.