Will CPI rise more than 0.5% in September 2026?

ResolutionResolved YES

YES payout100¢

NO payout0¢

VenueKalshi

Conviction at publication

Realized · held to resolution+92%$100 paper stake

Kalshi52¢ → 100¢

Oct 8 forecast

Q expects September CPI to rise more than 0.5% because a gasoline-led energy surge outweighs soft core prices.

September's energy shock is the clearest route to a 0.6% published increase: Brent and retail gasoline rose sharply, and one detailed preview estimated 0.57% unrounded. The market currently treats the result as genuinely close, while the strongest reason to lean higher is the unusually large gasoline contribution embedded in several forecasts. The margin is thin because estimates of 0.53%–0.54% and XTech's 0.463% could produce a single-decimal reading of only 0.5%, with soft core and shelter inflation limiting support.

Points to YES

September's sharp gasoline and crude-oil increases put substantial upward pressure on headline CPI.
On October 6, reported September Brent crude averaged $114 per barrel, $23 above August, while U.S. retail gasoline averaged $4.35 per gallon.
A detailed CPI preview placed the unrounded increase high enough to produce a 0.6% published reading.
On September 29, the preview forecast September headline CPI at 0.57% unrounded and 0.6% rounded, with energy rising 5.5%.
Multiple recent estimates place headline CPI near the boundary, corroborating a substantial energy-driven monthly increase.
On October 8, GlobalMacroLens estimated 0.54% headline CPI and the Cleveland Fed nowcast showed 0.53% for September.

Points to NO

One final forecast points clearly below the unrounded level usually needed for a 0.6% published print.
On October 5, XTech's final unrounded September headline CPI forecast was 0.463%.
Soft shelter inflation limits the support available beyond the gasoline-driven energy increase.
On October 1, Zillow projected September owners' equivalent rent growth of 0.22% and primary-residence rent growth of 0.17%.

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