December headline CPI revised to +0.1% M/M from -0.1%

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• The Bureau of Labor Statistics quietly published benchmark revisions for December's headline and core CPI readings on Friday to reflect updated seasonal adjustment factors, showing consumer prices actually increased during the month.
• The BLS upwardly revised headline CPI to +0.1% M/M in December, compared with the initial reading of -0.1%.
• Stripping out volatile food and energy prices, core CPI was revised up to +0.4% M/M versus +0.3% prior.
• The updated readings likely add some more pressure to the Federal Reserve's battle against persistent inflation in the wake of other inflationary factors, namely a still-tight labor market. In other words, the upwardly revised CPI readings could reinforce the U.S. central bank's seemingly "higher for longer" monetary policy stance.