Entropy-Weighted CUSUM (EWC) →

A systematic options-desk agent checks ADW-101 each morning before opening; when EWC score crosses above 65 with a rising trend (current score 59.0, at the 40th percentile of its 2,454-day history, mean 67.2), it automatically tightens position-size limits by 20% and routes an alert to the vol-desk to review near-dated straddle exposure. Because source_lineage pins the exact Stooq daily OHLCV vintage and methodology_version locks the 60-day rolling z-score / CUSUM(k=0.5) / Shannon-entropy pipeline, the agent's risk-management log satisfies the trade-rationale audit trail required by the desk's internal controls.

A hedge-fund portfolio manager uses the EWC cusum_statistic alongside the 0-100 score to time when to convert a directional equity position into a delta-neutral spread — specifically acting when the CUSUM accumulates enough signal to push EWC above its own 252-day mean. Unlike raw VIX, which reacts after realized vol spikes, EWC's entropy weighting detects the statistical entropy of the return stream before the vol regime breaks, giving the PM an average of several sessions of lead time to adjust hedges rather than chasing a moved market.