US CPI (Aug MM) 0.4% vs. Exp. 0.4% (Prev. 0.1%)

A headline print landing exactly on consensus tends to leave the initial rate move muted, with the market's attention shifting quickly to the components: the split between goods and services, shelter's contribution, and the core reading, which historically has carried more weight with the committee than the headline. The acceleration from the prior month's pace, even at an in-line result, is the kind of detail that shapes the narrative around whether disinflation is stalling, and past episodes of this sort have seen the front end reprice only once the core and supercore detail is digested rather than on the top line. In-line prints have typically produced a brief, two-way reaction in Treasuries and the dollar that fades unless the internals surprise. What matters next is the core monthly rate, the shelter and services ex-shelter breakdown, and how the print feeds the Fed's preferred gauge, since that translation has often been the swing factor for the policy path into the following meeting. As a single in-line data point, the signal is incremental rather than decisive.