The inflation report has two stories, not one

The US Bureau of Labor Statistics reported a 0.4% seasonally adjusted rise in the consumer price index for October 2026, following September's 0.6% increase. Energy inflation slowed sharply from 5.2% in September to 0.7% in October. That deceleration is real, but it should not be mistaken for an across-the-board retreat in price pressure.

The index excluding food and energy rose 0.3% in October, matching both September and August. Three consecutive 0.3% monthly readings imply approximately 0.9% cumulative growth over the three months, before rounding, and an illustrative annualised pace around 3.7%. This is a calculation from rounded monthly rates, not the official year-on-year core CPI figure.

Shelter and services explain why bond traders are uneasy

Shelter increased 0.3% in October and accounted for more than 30% of the headline monthly CPI rise, according to BLS. Food rose 0.5%; electricity rose 0.9%; used cars fell 1.2%. These divergences make it misleading to describe the month simply as an energy shock.

Bond investors are concerned with whether the non-energy components will keep inflation above the Federal Reserve's preferred trajectory. CPI and the Fed's preferred personal consumption expenditures measure have different baskets and methodologies, so the two should not be treated as interchangeable.

A higher Treasury yield raises the return available on comparatively low-risk assets. For a company whose valuation depends heavily on profits many years in the future, that can reduce the present value investors assign to future cash flows, even when expected revenue is unchanged.

Consider an illustrative business expected to produce $100 of cash flow in ten years. Discounting that amount at 8% gives approximately $46.32 today; at 9%, approximately $42.24. The 8.8% decline in present value comes entirely from a one-percentage-point change in the assumed discount rate. Real equity valuation also depends on risk premiums, growth and cash flows, but the calculation explains why long-duration technology stocks can be unusually rate-sensitive.

AI earnings can offset valuation pressure, but not abolish it

Reuters reported on 11 November that CoreWeave's results improved sentiment toward AI infrastructure companies even as Treasury yields rose after the CPI release. These are competing forces: higher expected earnings support valuations, while a higher discount rate works in the opposite direction.

The appropriate question for investors is whether forecast cash flows are improving fast enough to compensate for higher financing costs. Data-centre operators also face capital expenditure, energy availability and customer concentration risks that cannot be inferred from a one-day share-price rally.

What would change the conclusion

The next evidence comes from producer prices, wage and employment trends, subsequent CPI releases and the Federal Reserve's own communications. The BLS calendar schedules October producer-price data for 13 November. Those releases may refine the inflation picture but will not retrospectively change October CPI.

For market analysis, distinguish the observed CPI figures from traders' implied policy expectations. A rate increase priced into futures is not an announced Federal Reserve decision. The durable story is the interaction between inflation persistence, corporate earnings and the price of capital.