The Prediction Markets

September Inflation UK - Annual

Closed
Oct 21, 2026
Traded
$28K
Venues
Polymarket
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This market has closed

Trading ended on Oct 21, 2026. The prices below are the last ones before it closed and no longer update. Browse open markets

Odds by venue

Consensus blends each venue’s last price, weighted by how much has traded there. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

  • Polymarket

No outcome is trading right now. Check back when the venues reopen this market.

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle, source: ons.gov.uk

About this market

Final prediction market prices for "September Inflation UK - Annual". $28K has traded across 0 outcomes on Polymarket. The market closed on Oct 21, 2026.

This is a market about inflation in the United Kingdom over the 12-month period ending September 2026 as reported by the UK Office for National Statistics. This market will resolve to the percentage change in the UK Consumer Prices Index (CPI) over the 12-month period ending in September 2026 according to the monthly Office for National Statistics (ONS) report. The resolution source for this market will be the ONS “Consumer Prices Index, UK” report released for September 2026 (https://www.ons.gov.uk/economy/inflationandpriceindices#publications), currently scheduled to be released on October 21, 2026. Resolution of this market will take place upon release of the aforementioned data. Note: this market will resolve only based on the Consumer Prices Index (CPI) figure. The “Consumer Prices Index including owner occupiers’ housing costs” (CPIH) will not qualify. Note: the resolution source for this market will be the official monthly ONS CPI UK news release, which reports inflation over 12-month periods to only one decimal point (e.g., 2.9%). Thus, this is the level of precision that will be used when resolving the market. If the ONS does not release the relevant figures on the scheduled date, this market may remain open up until the scheduled release time of the next CPI report (https://www.ons.gov.uk/releasecalendar). If the information is not released by that time, this market will resolve according to the figures of the most recent previous month with available data.

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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