Alphacast High Frequency CPI - August 31th to September 6th 2026

Alphacast High Frequency CPI: Inflation was 0.48% WoW

Weekly inflation accelerated in the first September reading. Consumer prices rose 0.48% WoW, up from 0.32% in the previous week. The monthly run rate remained stable at 1.5% MoM, while annual inflation continued to ease, declining to 31.7% YoY from 32.1%.

The weekly acceleration was mainly driven by regulated and seasonal prices, while core inflation remained broadly stable. Regulated prices rose sharply to 0.66% WoW from 0.23%, while seasonal inflation increased to 0.56% from 0.38%. Core inflation edged up only slightly, to 0.36% WoW from 0.35%. On a monthly basis, regulated inflation increased to 1.5% MoM from 1.3%, while seasonal inflation eased to 1.7% from 1.8% and core inflation declined to 1.5% from 1.6%.

Overall, the first September reading showed a marked pickup in weekly inflation, driven primarily by stronger regulated and seasonal price dynamics, while core inflation remained comparatively stable. Despite the weekly acceleration, the headline monthly run rate held at 1.5% MoM, as higher regulated inflation was offset by moderation in seasonal and core components. Annual inflation extended its downward trend, falling to 31.7% YoY.

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