TOTAL VOLUME:
$114.4b
24H VOL:
$84,940,147
24H TRANSACTIONS:
1,362,287,844
OPEN INTEREST:
$1,163,022,755
334,261
Markets across
33,310
events
MATCHED EVENTS:
4,574
PLATFORM COVERAGE:
5
Polymarket:
42%
VS.
Kalshi:
58%
Time left: 14d:23h:49m
$
This market tracks whether the U.S. Consumer Price Index year-over-year inflation rate will reach exactly 3.5% in August 2026. On Kalshi, the leading outcome currently stands at 49.5%, with the alternative outcome also at 49.5%, reflecting an evenly split market. Resolution will be determined by the official CPI data released by the U.S. Bureau of Labor Statistics. Watch for the August 2026 CPI report, expected around mid-September 2026, which will definitively settle whether inflation hits that precise 3.5% threshold.
This event establishes a series of specific CPI year-over-year targets for August 2026, ranging from 2.0% to 3.5% in 0.1% increments. Each outcome corresponds to an exact inflation rate: if the official CPI year-over-year figure equals a given percentage, that outcome resolves to Yes. Only one outcome can resolve to Yes unless the actual CPI matches multiple listed values, which is not possible given the 0.1% precision of the outcomes. This structure allows traders to bet on the precise inflation level rather than directional movements. The resolution uses the officially published CPI year-over-year figure for August 2026. Outcomes represent a comprehensive range of moderate inflation scenarios, enabling granular forecasting of consumer price inflation during that month.
Prediction market odds on Kalshi reflect real-money traders' expectations for August 2026 inflation, often incorporating faster-moving data than traditional analyst surveys. While economists publish periodic CPI forecasts based on models and historical trends, prediction markets aggregate live information and incentivize accuracy through financial stakes. Comparing the current market-implied probability to consensus economist views can reveal whether traders are pricing in more or less inflation risk than the mainstream forecast. This divergence often signals where market participants see asymmetric opportunity.
CPI year-over-year in Aug 2026 is priced on Kalshi as a binary or multi-outcome contract reflecting the probability of specific inflation ranges or thresholds. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Traders buy and sell shares at prices between 0 and 100 cents, where the price directly represents the implied probability of that outcome occurring. The current top outcome shows 49.0% implied probability. As new economic data, Fed communications, or market sentiment emerge, prices adjust in real time, allowing traders to enter or exit positions dynamically through the resolution date.
The CPI year-over-year in Aug 2026 market resolves on Sep 11, 2026. Resolution is determined by the official Consumer Price Index data released by the U.S. Bureau of Labor Statistics for August 2026. The year-over-year figure compares August 2026 prices to August 2025 prices, capturing the 12-month inflation rate. Once the BLS publishes the official CPI report, the outcome is settled according to the specific outcome thresholds defined in the contract terms.
Several catalysts could shift CPI year-over-year in Aug 2026 odds significantly. Federal Reserve policy decisions and interest-rate changes influence inflation expectations and borrowing costs. Energy and commodity prices, particularly oil, directly affect consumer inflation. Labor market strength and wage growth feed into price pressures. Supply-chain disruptions or geopolitical events can spike input costs. Monthly CPI releases leading up to August 2026 will provide real data points that traders incorporate into their forecasts. Fiscal policy announcements and inflation-linked economic reports will also move market sentiment as the resolution date approaches.