Definition
A single composite score classifying dollar liquidity as Loose, Neutral, or Tight, built by aggregating 10 scored indicators across 4 groups via a CISS-style quadratic form with rolling 5-year percentile thresholds.
The DLI Score is computed in 4 steps: (1) Fetch raw data from FRED, Treasury, and NY Fed APIs. (2) Convert inputs to bounded tightness signals in [0, 1], where 1 means tighter. Most indicators use rolling 5-year tightness percentiles; ON RRP uses a conditional depletion-transition rule, scoring recent 3m/6m/12m drawdowns only when the balance has moved toward the low end of its rolling 5-year range. Stable low ON RRP becomes dormant. (3) Aggregate the 4 group sub-indices via the CISS quadratic form: composite = √(s'·(W∘Σ)·s), where W uses group weights A=0.65, B=0.10, C=0.05, D=0.20 and Σ is the rolling 60-day correlation matrix of group changes. (4) Classify using rolling 5-year percentile cuts on the composite: ≤P20 = Loose, P20-P80 = Neutral, ≥P80 = Tight. DLI is one contemporaneous liquidity-stance score, not a forward-return forecaster.