CPI Inflation (YoY)
(CPIt − CPIt-12) / CPIt-12 × 100
Percentage change vs. same month prior year. Above 2% = above Fed target. Series: CPIAUCSL.
GDP Growth (Annualized)
((GDPt / GDPt-1)4 − 1) × 100
Quarter-over-quarter, annualized. Two consecutive negatives = informal recession definition.
Real Interest Rate
Fed Funds Rate − CPI YoY
Positive = restrictive policy (costs more than inflation). Negative = accommodative despite rate hikes.
Yield Curve Spread
10-Year Treasury − 2-Year Treasury
Negative = inverted curve, recession signal. Re-crossing zero after inversion = highest-risk moment.
Labor Leverage Index (LLI)
f(U-3, NFP, JOLTS, U-6, CIVPART)
Composite 0–100 score. Above 60 = worker power. Below 40 = employer power / labour market slack.
Affordability Stress Index (ASI)
f(Mortgage%, HPI YoY, Supply, Sales)
Above 65 = high stress. Mortgage rate weighted at 40%; supply constraint at 20%. Median home = $405,300.
Inflation Friction Index (IFI)
f(CPI, Core PCE, PPI, Real Rate)
Weighted composite of price pressure indicators. Above 65 = high friction. CPI weighted at 35%.
Growth Momentum Index (GMI)
f(GDP, INDPRO, RetailSales, CapUtil)
Composite output gauge. GDP weighted 35%; INDPRO 25%; Retail Sales 20%; Capacity Utilization 20%.
Case-Shiller HPI (YoY)
(HPIt − HPIt-12) / HPIt-12 × 100
12-month change in the S&P/Case-Shiller National Home Price Index. Lags actual market by ~60 days. Series: CSUSHPISA.