Algorithmic Trading · Technical Publication

Order Book Imbalance Strategy: A Production OBI Signal in Python

Build a volume-weighted Order Book Imbalance (OBI) signal from L2 market data with adaptive z-score thresholds, decay-weighted multi-level aggregation, microprice anchoring, and a realistic event-driven backtest framework with execution lag simulation.

Technical White Paper Enter QuantLab

Publication TrackAlgorithmic Trading

Date of Release2026-07-30

Reading Time14 min read

StatusVerified Engineering Article

#order book imbalance#market microstructure#L2 data#signal processing#python

Executive Brief

Key Takeaways

01.Multi-level OBI with decay weighting
02.Z-score adaptive thresholds
03.Microprice anchoring
04.Execution lag simulation