Cumulative Deviation Monitoring

Definition

Cumulative deviation monitoring functions as a quantitative risk control mechanism designed to track the aggregate variance between expected asset pricing models and realized market outcomes. By continuously accumulating incremental price or volatility discrepancies, this process identifies systemic drift that exceeds pre-defined risk tolerances. It serves as a vital diagnostic tool for derivatives desks to detect potential model decay or unintended exposure concentration before significant capital impairment occurs.