CPI & Inflation Prediction Data — Kalshi
Tick-by-tick trades and L2 order-book depth for 16 CPI & Inflation series on Kalshi — CPI (KXCPI), Inflation YoY, Core inflation, month-over-month CPI and core CPI, U.S. headline inflation at year end. 3,224 series-days covering March 2026 – present; 49.9K trades · $2.3M turnover over the last 30 captured days. Every contract captured co-located with nanosecond venue and receive timestamps — sold as day bundles, €1 per day, bought as a guest with instant download.
CPI & Inflation on Kalshi
CPI prints, core CPI, month-over-month and year-over-year inflation, year-end headline inflation.
Every series below is archived at full feed resolution — each contract file carries every trade print (price, size, side) and Level-2 order-book updates in one normalized, zstd-compressed schema. A series-day bundle holds all contracts of the series for one UTC day.
Most traded CPI & Inflation series (last 30 days)
Ranked by USD turnover from our own daily statistics — the series a market maker or bot builder should start with.
| # | Series | Venue | Trades (30d) | Turnover (30d) | Days | |
|---|---|---|---|---|---|---|
| 1 | CPI | Kalshi | 14,062 | $791.6K | 30 | Buy days |
| 2 | Inflation | Kalshi | 15,150 | $711.2K | 30 | Buy days |
| 3 | Core inflation | Kalshi | 6,643 | $236.4K | 30 | Buy days |
| 4 | Truflation EV | Kalshi | 2,659 | $219.4K | 25 | Buy days |
| 5 | CPI core | Kalshi | 6,252 | $205.5K | 30 | Buy days |
| 6 | Brazil inflation | Kalshi | 166 | $48.9K | 30 | Buy days |
| 7 | year over year inflation | Kalshi | 1,888 | $23.6K | 30 | Buy days |
| 8 | month over month inflation | Kalshi | 951 | $13.5K | 30 | Buy days |
| 9 | month over month core inflation | Kalshi | 624 | $11.5K | 30 | Buy days |
| 10 | US Core PCE inflation | Kalshi | 422 | $7.4K | 30 | Buy days |
Trades and USD turnover summed over every contract of the series, from the recorded tick data; 30 days to 2026-10-12. Series without statistics in the window are omitted.
CPI & Inflation — development since capture
139,717 trades and $5.2M of USD turnover across 16 series since 2026-07-08; busiest single series-day 2026-08-11 with $236.5K, biggest contract KXCPI-26JUL-T0.0 (2026-08-11, $177.0K).
| Month | Series active | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|---|
| Oct 2026 (month to date) | 16 | 12 | 23,030 | $1.2M | $102.2K | 1,299 | 16.8M | — |
| Sep 2026 | 16 | 30 | 43,670 | $1.7M | $56.2K | 3,332 | 46.7M | +6.5 % |
| Aug 2026 | 16 | 31 | 43,311 | $1.6M | $51.1K | 2,183 | 24.3M | +125.7 % |
| Jul 2026 | 8 | 24 | 29,706 | $702.1K | $29.3K | — | — | — |
CPI & Inflation series — trades and USD turnover summed per calendar month (UTC) over every contract, from our own daily statistics of the recorded tick data. Days = captured UTC days; a partial month shows no month-over-month change. Contracts traded and L2 (order-book) updates exist for days captured with the extended statistics.
CPI & Inflation — turnover by weekday
Wednesdays are the busiest day at about $144.3K of USD turnover, averaged over the captured days of the last 30.
| Weekday (UTC) | Avg turnover / day | USD | Avg trades | Days |
|---|---|---|---|---|
| Monday | $129.1K | 1.8K | 5 | |
| Tuesday | $68.0K | 1.1K | 4 | |
| Wednesday | $144.3K | 3.0K | 4 | |
| Thursday | $60.2K | 1.8K | 4 | |
| Friday | $72.8K | 1.5K | 4 | |
| Saturday | $37.1K | 1.1K | 4 | |
| Sunday | $21.4K | 1.3K | 5 |
CPI & Inflation series — average USD turnover and trades per weekday over the captured days of the last 30, from our own daily statistics; weekdays without a captured day show —.
Rising CPI & Inflation series — 30 days vs the 30 before
| # | Series | Venue | Turnover (30d) | Prior 30d | Growth (avg / day) | Trades (30d) |
|---|---|---|---|---|---|---|
| 1 | Core inflation | Kalshi | $236.4K | $23.9K | +891.2 % | 6,643 |
| 2 | month over month inflation | Kalshi | $13.5K | $2.5K | +432.6 % | 951 |
| 3 | CPI core | Kalshi | $205.5K | $55.0K | +273.4 % | 6,252 |
| 4 | CPI | Kalshi | $791.6K | $266.4K | +197.1 % | 14,062 |
| 5 | Inflation | Kalshi | $711.2K | $281.8K | +152.4 % | 15,150 |
Growth of average USD turnover per captured day, the 30 days to 2026-10-12 against the 30 days before; series need ≥ 10 captured days in both windows and ≥ $10K of turnover in the current one. From our own daily statistics.
CPI & Inflation prediction markets — trades and turnover per day
Every captured UTC day of the last 30, summed over the 16 CPI & Inflation series — how much these markets trade day by day, from our own tick capture.
| UTC day | Series with stats | Contracts traded | Trades | Turnover | Buy share | L2 updates |
|---|---|---|---|---|---|---|
| 2026-10-12 | 16 | 124 | 2,035 | $165.4K | 75 % | 1.4M |
| 2026-10-11 | 15 | 88 | 1,981 | $23.3K | 50 % | 1.2M |
| 2026-10-10 | 16 | 77 | 2,034 | $101.9K | 63 % | 1.0M |
| 2026-10-09 | 16 | 132 | 1,572 | $173.2K | 65 % | 1.7M |
| 2026-10-08 | 16 | 126 | 2,011 | $73.4K | 49 % | 1.4M |
| 2026-10-07 | 16 | 118 | 2,847 | $328.6K | 16 % | 1.9M |
| 2026-10-06 | 16 | 127 | 1,152 | $76.9K | 78 % | 1.6M |
| 2026-10-05 | 16 | 113 | 1,131 | $107.8K | 86 % | 1.6M |
| 2026-10-04 | 15 | 84 | 2,386 | $33.6K | 41 % | 1.1M |
| 2026-10-03 | 16 | 72 | 644 | $14.8K | 45 % | 867.6K |
| 2026-10-02 | 16 | 110 | 2,395 | $58.8K | 74 % | 1.0M |
| 2026-10-01 | 16 | 128 | 2,842 | $69.2K | 85 % | 2.1M |
| 2026-09-30 | 16 | 153 | 6,070 | $110.2K | 61 % | 2.1M |
| 2026-09-29 | 16 | 129 | 1,131 | $40.6K | 64 % | 1.9M |
| 2026-09-28 | 16 | 192 | 3,647 | $276.5K | 58 % | 2.7M |
| 2026-09-27 | 15 | 85 | 1,167 | $17.9K | 56 % | 1.1M |
| 2026-09-26 | 16 | 76 | 861 | $15.5K | 60 % | 946.0K |
| 2026-09-25 | 16 | 123 | 913 | $25.1K | 65 % | 1.3M |
| 2026-09-24 | 16 | 121 | 901 | $33.8K | 83 % | 1.0M |
| 2026-09-23 | 16 | 140 | 1,587 | $76.6K | 48 % | 1.4M |
| 2026-09-22 | 16 | 131 | 1,361 | $83.9K | 35 % | 1.2M |
| 2026-09-21 | 16 | 149 | 1,077 | $69.5K | 64 % | 1.8M |
| 2026-09-20 | 15 | 99 | 960 | $27.7K | 50 % | 687.2K |
| 2026-09-19 | 16 | 118 | 935 | $16.3K | 39 % | 945.0K |
| 2026-09-18 | 16 | 116 | 1,036 | $34.3K | 51 % | 1.2M |
| 2026-09-17 | 16 | 180 | 1,480 | $64.3K | 82 % | 977.3K |
| 2026-09-16 | 16 | 126 | 1,635 | $61.6K | 68 % | 1.5M |
| 2026-09-15 | 16 | 131 | 930 | $70.8K | 66 % | 1.1M |
| 2026-09-14 | 16 | 107 | 919 | $26.1K | 74 % | 1.3M |
| 2026-09-13 | 15 | 33 | 246 | $4.8K | 93 % | 347.6K |
Per UTC day, summed over every CPI & Inflation series that has statistics for that day, from every trade print of every contract in our tick archive. Trades and USD turnover are exact; contracts traded, buy share and L2 (order-book) updates exist for days captured with the extended statistics — earlier days show —.
Most traded CPI & Inflation contracts on 2026-10-12
The single event contracts with the most USD turnover on the newest captured day — with open and close price and the outcome implied by the last print.
| Contract | Series | Venue | Open → Close | Implied outcome | Trades | Turnover | |
|---|---|---|---|---|---|---|---|
| KXCPI-26SEP-T0.2 | CPI | Kalshi | 0.980 → 0.990 | Yes | 38 | $34.0K | buy file → |
| KXCPIYOY-26SEP-T3.6 | Inflation | Kalshi | 0.480 → 0.580 | open | 259 | $23.5K | buy file → |
| KXTRUEV-26OCT12-T1170.09 | Truflation EV | Kalshi | 0.990 → 0.990 | Yes | 8 | $8.8K | buy file → |
| KXCPICOREYOY-26SEP-T2.4 | Core inflation | Kalshi | 0.480 → 0.480 | open | 35 | $6.9K | buy file → |
| KXTRUEV-26OCT12-T1190.09 | Truflation EV | Kalshi | 0.870 → 0.990 | Yes | 43 | $6.9K | buy file → |
| KXCPIYOY-26SEP-T3.3 | Inflation | Kalshi | 0.990 → 0.980 | Yes | 6 | $6.6K | buy file → |
| KXCPICOREYOY-26SEP-T2.3 | Core inflation | Kalshi | 0.860 → 0.850 | open | 32 | $5.9K | buy file → |
| KXCPICOREYOY-26NOV-T2.0 | Core inflation | Kalshi | 0.960 → 0.990 | Yes | 18 | $5.4K | buy file → |
| KXCPI-26SEP-T0.4 | CPI | Kalshi | 0.910 → 0.920 | open | 81 | $5.1K | buy file → |
| KXTRUEV-26OCT12-T1200.09 | Truflation EV | Kalshi | 0.620 → 0.990 | Yes | 47 | $5.0K | buy file → |
Single contracts ranked by USD turnover on 2026-10-12 (UTC), from every trade print in our tick archive. Prices quote 0..1; the implied outcome reads the last print of the day (≥ 0.97 Yes/Up, ≤ 0.03 No/Down) — venues publish the official result. Each contract’s day file is sold individually, the whole series day as a bundle.
Kalshi CPI & Inflation series
Largest archive first. Each series page lists its exact coverage, day count and recent days; day bundles are bought in the shop calendar.
| Series | Venue | Interval | Days | Coverage | Size | Price/day | |
|---|---|---|---|---|---|---|---|
| CPI | Kalshi | monthly | 223 | March 2026 – present | 1.23 GB | €1 | Buy days |
| Inflation | Kalshi | monthly | 223 | March 2026 – present | 730 MB | €1 | Buy days |
| year over year inflation | Kalshi | event | 223 | March 2026 – present | 528 MB | €1 | Buy days |
| Core inflation | Kalshi | monthly | 223 | March 2026 – present | 372 MB | €1 | Buy days |
| month over month inflation | Kalshi | event | 223 | March 2026 – present | 347 MB | €1 | Buy days |
| U.S. headline inflation at year end | Kalshi | annual | 76 | July 2026 – present | 339 MB | €1 | Buy days |
| Truflation EV | Kalshi | event | 124 | April 2026 – present | 333 MB | €1 | Buy days |
| year over year core inflation | Kalshi | event | 223 | March 2026 – present | 277 MB | €1 | Buy days |
| CPI core | Kalshi | monthly | 223 | March 2026 – present | 208 MB | €1 | Buy days |
| month over month core inflation | Kalshi | event | 223 | March 2026 – present | 201 MB | €1 | Buy days |
| US PPI YoY in [month] | Kalshi | monthly | 164 | April 2026 – present | 127 MB | €1 | Buy days |
| US gasoline CPI in [month] | Kalshi | monthly | 204 | March 2026 – present | 118 MB | €1 | Buy days |
| US Core PCE inflation | Kalshi | monthly | 223 | March 2026 – present | 86.2 MB | €1 | Buy days |
| Brazil inflation | Kalshi | event | 223 | March 2026 – present | 85.8 MB | €1 | Buy days |
| US airline fares CPI in [month] | Kalshi | monthly | 203 | March 2026 – present | 68.9 MB | €1 | Buy days |
| Highest Inflation | Kalshi | event | 223 | March 2026 – present | 36.5 MB | €1 | Buy days |
Why buy CPI & Inflation prediction-market data here
Four things every page on this site is built on — and the reason the numbers above exist at all.
We record everything
The complete public feed of each venue as it was published: every Level-2 snapshot and update at the venue's full book depth, every trade with its aggressor side, every quote, funding, mark-price and liquidation event — for every instrument the venue lists, every UTC day since we added the venue. Nothing sampled, no top-N cut, no on-demand capture.
Institutional grade
Captured co-located at the venue with the exchange timestamp and our receive timestamp in integer nanoseconds, an event-id chain that makes any gap visible, and one normalized schema across 35+ venues — the same capture our own high-frequency trading engine and enterprise feeds run on.
€1 per instrument-day
Any instrument-day is €1, series-day bundles start at €1 — no subscription, no minimum order, no tiers to unlock. Credit packs lower the effective price and never expire, and every venue has free full-day samples to test against first.
Self-service for everyone
Pick the days in the Data Shop, pay by card as a guest and download immediately — no sales call, no enterprise contract, no KYC. Coding agents buy the same files through the MCP server, and the free Agent Skill teaches them the format.
Agents: /llms.txt · MCP server /mcp · every page as markdown via Accept: text/markdown
CPI & Inflation prediction-market data — FAQ
Does Kalshi have CPI markets?
Yes — headline CPI (KXCPI), year-over-year inflation (KXCPIYOY), core inflation (KXCPICOREYOY), the month-over-month and year-over-year "econ stat" series for CPI and core CPI, and year-end headline inflation. Each release day is a separate bundle day.
How is CPI prediction-market data sold?
One purchase covers every contract of the series for one UTC day — every trade print and the complete Level-2 book per contract, captured co-located with nanosecond timestamps — €1 per series-day, bought as a guest with instant download.
How far back does the CPI & Inflation data go?
Coverage runs March 2026 – present — 3,224 series-days across 16 series on Kalshi. Each series page lists its exact span.
Can I get CPI & Inflation prediction-market data as CSV or Parquet?
Yes — trades export as gzipped CSV or Parquet at no extra cost, with integer microsecond UTC timestamps that load straight into pandas, polars or DuckDB. Kalshi records full order-book depth without a separate BBO stream, so book data ships in the native tick file — the free reader script converts it locally. See the formats overview.
How much does CPI & Inflation prediction-market data cost?
€1 per series-day bundle — every contract of the series for that UTC day — no subscription, no minimum order. Pick days in the shop calendar, pay as a guest, download immediately.
Do I need an account or a sales call?
No. Pick the CPI & Inflation series-days in the Data Shop, pay by card as a guest and download immediately — no subscription, no minimum order, no KYC, no enterprise contract, no sales call. Coding agents buy the same bundles through the MCP server.
How is the CPI & Inflation data captured?
Co-located at the venue, message by message: every Level-2 update and every trade print carries the exchange timestamp and our receive timestamp in integer nanoseconds, an event-id chain makes any gap visible, and one normalized schema across 35+ venues means a parser written for Binance reads these files unchanged. It is the same capture our own high-frequency trading engine runs on — nothing sampled, no top-N cut.
What was the busiest CPI & Inflation trading day?
2026-08-11 — $236.5K of USD turnover over 2,866 trades in a single series-day. Since our statistics began on 2026-07-08, 16 CPI & Inflation series recorded 139,717 trades and $5.2M in total; the biggest single contract was KXCPI-26JUL-T0.0 on 2026-08-11 at $177.0K. Wednesdays are the busiest weekday at about $144.3K per day.