The May Consumer Price Index report, released June 10, delivered something inflation hawks weren’t expecting: a cooldown. Core CPI, which strips out volatile food and energy prices, rose just 0.2% month-over-month on a seasonally adjusted basis. That’s half the 0.4% increase recorded in April.
A strategist at Natixis North America is reading the data as a potential inflection point, suggesting that core inflation may have peaked. The catch, as always, comes with an asterisk: this narrative only holds if oil prices cooperate.
The numbers tell a quieter story than expected
On a year-over-year basis, core CPI came in at 2.9%, a slight uptick from the 2.8% annual rate seen in March. But the monthly deceleration is what’s grabbing attention. Going from 0.4% to 0.2% in a single month is meaningful, especially after the volatile inflation readings that characterized early 2026.
Headline CPI told a different story entirely. The broader measure, which includes food and energy, jumped 0.5% month-over-month and registered 4.2% year-over-year on a non-seasonally adjusted basis. That gap between headline and core numbers underscores exactly why energy prices are the wildcard in this equation.
