Costco Credit Card Spend in September — September 2026
Markets
Every market on this event, moneyline first. Select one to compare it across platforms in the side panel.
| Outcome | Best | Volume | Azuro | Gemini | Kalshi | Limitless | Novig | Polymarket | Polymarket US |
|---|---|---|---|---|---|---|---|---|---|
Above 91 Winner | 99.0%Kalshi | $5.2K | — | — | — | — | — | — | |
Above 94 Winner | 99.0%Kalshi | $4.7K | — | — | — | — | — | — | |
Above 95 Winner | 97.0%Kalshi | $2.6K | — | — | — | — | — | — | |
Above 96 Winner | 99.0%Kalshi | $3.4K | — | — | — | — | — | — | |
Above 97 Winner | 93.0%Kalshi | $6.4K | — | — | — | — | — | — | |
Above 98 Winner | 96.0%Kalshi | $5.6K | — | — | — | — | — | — | |
Above 99 Winner | 82.0%Kalshi | $7.6K | — | — | — | — | — | — | |
Above 100 Winner | 67.0%Kalshi | $8.2K | — | — | — | — | — | — | |
Above 103 | 44.0%Kalshi | $2.9K | — | — | — | — | — | — | |
Description from Kalshi. A cross-platform summary is generated once this event is matched across platforms.
For purposes of this market, determination will resolve on the first value reported by Carbon Arc. Corrections or revisions made after the market has been settled will not affect the outcome. The index measures year-over-year change, where 100 means Costco Credit Card Spend was equal to the same month last year. Values above 100 indicate growth and values below 100 indicate decline: for example, 103 = 3% more spend than year prior, 97 = 3% decline from year prior. The index is measured by Carbon Arc's aggregated U.S. credit and debit card transaction panel, matched to the same period of the prior year. The panel updates daily as new data arrives. Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the underlying company. All trademarks, logos, and brand names are the property of their respective owners.
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