Core up, however supercore down:
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Determine 1: Instantaneous inflation for core CPI (blue), chained core CPI (tan), supercore CPI (pink), companies supercore (gentle inexperienced), PPI core (purple), and PCE core (inexperienced), per Eeckhout (2023), T=12, a=4. Supply: BLS, BEA, Pawel Skrzypczynski, and creator’s calculations.