TOTAL VOLUME:

$154.3b

24H VOL:

$228,458,490

24H TRANSACTIONS:

2,984,028,936

OPEN INTEREST:

$1,879,276,037

410,833

Markets across

40,345

events

MATCHED EVENTS:

4,363

PLATFORM COVERAGE:

5

Polymarket:

37%

VS.

Kalshi:

63%

BETA
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Economics
CPI in October (exact value)
kalshi

CPI in October (exact value)

Dec 15, 2025, 10:00 AM EST - Nov 10, 2026, 10:00 AM EST
Total volume:
$30,598
Volume 24h:
$1,980N/A
Liquidity:
N/AN/A
Open interest:
$10,308
0%

Exactly 0.3%

 - Kalshi

Exactly 0.3% - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Nov 10, 2026

Time left: 07d:17h:24m

CPI month-over-month in Oct 2026?

40%chance
Amount

$

Trade on
kalshi

Trade on Kalshi

Join Kalshi and score $25 for your first trade.At 46¢ buys you 217 shares | Odds: 40% Total Payout: $217 | Net Profit: $117 Multiplier: 2.17x | ROI: 117% APY not meaningful 7 days to resolution
You will be redirected to the platform to complete this trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Exactly 0.3%

Trade
40%
Yes 46¢No 59¢
5¢
N/A
$6,312
0%
4%
$2,068
1w 17h
Active
kalshi

Exactly 0.2%

28%
Yes 30¢No 74¢
4¢
N/A
$1,759
0%
3%
$706
1w 17h
Active
kalshi

Exactly 0.4%

9%
Yes 13¢No 93¢
6¢
N/A
$5,200
0%
59%
$2,996
1w 17h
Active
kalshi

Exactly 0.1%

6%
Yes 26¢No 97¢
23¢
N/A
$2,427
0%
4%
$1,857
1w 17h
Active
kalshi

Exactly 0.5%

5%
Yes 12¢No 97¢
9¢
N/A
$2,475
0%
41%
$1,361
1w 17h
Active
kalshi

Exactly 0.6%

1%
Yes 9¢No 100¢
9¢
N/A
$11,808
0%
2,279%
$956
1w 17h
Active
kalshi

Exactly 0.0%

1%
Yes 99¢No 100¢
99¢
N/A
$376
0%
36%
$154
1w 17h
Active
kalshi

Exactly -0.2%

1%
Yes 24¢No 100¢
24¢
N/A
$221
0%
0%
$201
1w 17h
Active
kalshi

Exactly -0.1%

1%
Yes 99¢No 100¢
99¢
N/A
$20
0%
0%
$10
1w 17h
Active
Total markets: 9

Intro

This market tracks whether the Consumer Price Index will register a month-over-month change of exactly 0.5% in October 2026. On Kalshi, the leading outcome—CPI MoM at precisely 0.5%—stands at 50.0%, while an alternative outcome holds 25.0% probability. The market resolves according to the official CPI month-over-month figure released by the Bureau of Labor Statistics. Watch for the October 2026 CPI release scheduled around November 10, 2026, which will determine the final settlement.

Kalshi

If the CPI month-over-month is exactly -0.2% in Oct 2026, then the market resolves to Yes. If the CPI month-over-month is exactly -0.1% in Oct 2026, then the market resolves to Yes. If the CPI month-over-month is exactly 0.0% in Oct 2026, then the market resolves to Yes. If the CPI month-over-month is exactly 0.1% in Oct 2026, then the market resolves to Yes. If the CPI month-over-month is exactly 0.2% in Oct 2026, then the market resolves to Yes. If the CPI month-over-month is exactly 0.3% in Oct 2026, then the market resolves to Yes. If the CPI month-over-month is exactly 0.4% in Oct 2026, then the market resolves to Yes. If the CPI month-over-month is exactly 0.5% in Oct 2026, then the market resolves to Yes. If the CPI month-over-month is exactly 0.6% in Oct 2026, then the market resolves to Yes.

Frequently asked questions

Currently, prediction market participants are expressing a view on October 2026 CPI that may differ from traditional analyst expectations. While economic forecasts from institutions often center on point estimates and ranges, this market allows for a probabilistic assessment of various outcomes. If analysts broadly anticipate a specific CPI figure, we might see higher demand for contracts predicting that result, driving up their price. However, the market can also reflect uncertainty or disagreement among traders, potentially diverging from consensus forecasts. It’s important to remember that this market represents a collective prediction, not a single expert opinion.

On Kalshi, this market is priced using a continuous double auction, meaning buyers and sellers submit bids and offers, and trades occur when they match. The price of a contract reflects the probability of that outcome occurring, as perceived by the market participants. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Traders are constantly adjusting their valuations based on new information and their own expectations for the future CPI data. This dynamic process leads to a real-time assessment of probabilities, offering a unique perspective on potential economic scenarios. The current volume indicates active participation and price discovery.

This market resolves around Nov 10, 2026, with the outcome determined by the official CPI month-over-month data released for October 2026 by the Bureau of Labor Statistics. The resolution will be confirmed once the event is verifiable from credible public reporting. Traders will look to this data release to determine which contracts will pay out, based on the actual CPI figure reported. This provides a clear and objective basis for settling the market, ensuring a transparent and reliable outcome for all participants.

Several economic signals and events could significantly impact this market. Unexpected shifts in employment data, changes in energy prices, or geopolitical events could all influence inflation expectations and, consequently, the prices in this market. Major Federal Reserve policy announcements regarding interest rates or quantitative easing would also be key catalysts. Furthermore, any revisions to previous CPI data or changes in the methodology used to calculate inflation could prompt traders to reassess their positions. Monitoring these factors will be crucial for understanding the dynamics of this market as we approach Nov 10, 2026.