TOTAL VOLUME:
$134.1b
24H VOL:
$113,466,932
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,423,222,590
402,751
Markets across
30,217
events
MATCHED EVENTS:
2,632
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 6, 10:29 PM EST
Kalshi
These markets track Costco's customer traffic performance in August 2026 compared to the same month in the previous year. The outcomes depend on whether foot traffic measurements exceed specific thresholds, reflecting growth or decline relative to historical data.
All markets share a common framework for determining outcomes based on Carbon Arc's reported Costco Monthly Foot Traffic index for August 2026. The index quantifies year-over-year changes in U.S. store visits, with 100 representing equal traffic to the prior year's August. Values above 100 signify growth, while values below 100 indicate decline. Each market has a distinct threshold (ranging from 93 to 103), and resolves to 'Yes' if the reported index exceeds its respective threshold. Outcomes are determined solely by the first value reported by Carbon Arc for August 2026; any subsequent corrections or revisions after settlement do not alter the result. The index calculation normalizes for variables such as seasonality, weather, and holidays, using mobile location data from over 200 million devices matched to the same calendar days as the prior year. Daily updates to the panel ensure timely resolution, with all markets settling based on consistent methodological standards.
Compared to analyst forecasts, odds from this market often reflect a different perspective because they are driven by real-time trader sentiment rather than institutional research. While analysts may issue detailed reports based on historical trends and projections, this market incorporates the collective guesswork of many participants, sometimes showing higher or lower confidence in certain outcomes.
This market resolves around Sep 14, 2026, with the outcome confirmed once the foot traffic data for August is verifiable from credible public reporting. The final numbers will be compared against the market’s defined categories to determine which outcome is correct, closing all positions based on the officially recorded results.
News about Costco’s promotions, supply chain updates, or consumer spending trends could shift this market. Additionally, broader economic reports—such as retail sales data or consumer confidence indexes—may influence trader sentiment. Any unexpected events like weather disruptions or public health developments could also cause rapid price movements as participants reassess their expectations.