Four Measures of Aggregate Economic Activity
Original Report
Output is still rising smartly according to one index (2.1% m/m annualized): Figure 1: GDP (blue bars), SPGMI monthly GDP (red), Brave-Butters-Kelley index (blue), Coincident Index (green), all in...
Output is still rising smartly according to one index (2.1% m/m annualized): Figure 1: GDP (blue bars), SPGMI monthly GDP (red), Brave-Butters-Kelley index (blue), Coincident Index (green), all in logs 2024M01=0. Source: BEA 2026Q1 advance, SPGMI; Kelley School, annd Philadelphia Fed via FRED, and author’s calculations.
Glass House Analysis
Central bank policy decisions made in boardrooms cascade through the economy in ways that touch everyone. A quarter-point rate change might seem abstract, but it determines whether young families can afford homes, whether businesses can afford to hire, and whether retirees see meaningful returns on their savings. The tension between fighting inflation and maintaining employment represents a fundamental tradeoff in economic policy—one that invariably creates winners and losers.
The implications extend beyond the immediate news cycle. Every economic development creates ripples that affect employment, prices, and opportunities in ways that may not be immediately visible but are deeply felt. By tracking these connections, we can better understand how the economy truly works—not as an abstract machine, but as a human system shaped by and shaping the lives of millions.
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