Critical Supply Chain Index (BCI) The Blue Center Critical Supply Chain Index and Monitor is a comprehensive, granular, and near real-time index for critical and national security supply chain disruptions. Learn more August 2026 In August 2026, the BCI was at 2.27 percentage points (pp) of consumer-supply pairs temporarily disrupted above the pre-2020 average. There is significant heterogeneity in supply disruptions across sectors and stages of production. Sub-Indices