What does the chart show?
The chart shows the Atlanta Fed’s Flexible-Price and Sticky-Price Consumer Price Indices (CPI) since 1970. The Flexible-Price CPI (green line) represents goods and services included in the CPI that change price relatively frequently, whereas the Sticky-Price CPI (blue line) represents those changing price relatively slowly. For example, some sticky prices are those for medical care services, alcoholic beverages, household furnishings while things like new vehicles, fuel and gas, or bakery products are part of the flexible price items. The latest readings showed the US headline CPI index at 7.5% year-on-year, once again above analysts’ estimates. The Atlanta Fed’s flexible price component is, as expected, sitting at all-time highs at 17.8% year-on-year, whereas the sticky price component is up 4.2% on a year-on-year basis, its highest since 1991.
Why is this important?
As sticky prices are more gradual to change, when these prices are set, they include expectations about future inflation to a greater degree than flexible prices, which tend to be more responsive to short-term changes in the current economic environment. Last year the debate was on whether the inflation spike was transitory or not and now that the “transitory team” has badly lost the match, we are all gauging when it will come back to lower levels. The sticky price component therefore may provide key insight when trying to gauge where inflation is heading. In January, the flexible measure reduced slightly from 17.9% to 17.8% whereas the sticky metric has reached new highs, this could indicate that the supply chain and pandemic related pressures are improving but inflation expectations are shifting meaningfully higher. When the sticky price items are hitting multi-decade highs, the risks of inflation becoming persistent cannot be dismissed. Markets are in the process of adjusting rapidly to this new reality, and already financial conditions have been tightened significantly by the policy pivot.