Kalshi CPI-U index in [month] Historical Data
Every Kalshi “CPI-U index in [month]” contract of the day — every trade print and the complete Level-2 book, captured co-located with nanosecond venue and receive timestamps. 105 trading days as day bundles, €1 per day, bought as a guest with instant download.
CPI-U index in [month] on Kalshi — activity
Trades and USD turnover summed over every contract of the series across 21 captured days to 2026-10-12, from the recorded tick data — the per-day averages divide by the captured days. Buy share, quoted spread (in contract price cents, 0..1 = 100 ¢), best-bid/ask depth and Level-2 update counts are turnover-weighted over the same window.
One purchase, the whole series for a day
A series-day bundle contains every CPI-U index in [month] contract that was listed on Kalshi on that UTC day — traded or not — 35 contract files on the latest covered day. Each file carries the full raw feed: every trade print with price, size and side, plus Level-2 order-book updates, in the same zstd-compressed schema as our crypto venues. Event contracts quote 0..1; turnover is USD-normalized.
Coverage runs July 2026 – present — 105 trading days, 78.9 MB compressed in total. A day typically holds 25 contract files (up to 48 on the busiest day, 10.0 MB). Pick individual days in the shop calendar for €1 each; delivery is an instant per-file download or one archive for the whole day.
CPI-U index in [month] — development since capture
74 trades and $2.7K of USD turnover over 22 captured days since 2026-09-22 — record day 2026-10-13 with $867.83, biggest single contract KXCPINDEX-26OCT14-T336.400 (CPINDEX · 2026-10-14 · strike · ABOVE 336.4) (2026-09-23, $418.5).
| Month | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|
| Oct 2026 (month to date) | 13 | 58 | $1.8K | $139.19 | 25 | 157.4K | — |
| Sep 2026 | 9 | 16 | $895.41 | $99.49 | 6 | 23.4K | — |
Kalshi CPI-U index in [month] — 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-U index in [month] — activity by weekday
Wednesdays carry the most turnover, about $250.43 per day.
| Weekday (UTC) | Avg turnover / day | USD | Avg trades | Days |
|---|---|---|---|---|
| Monday | $0 | 0 | 3 | |
| Tuesday | $66.5 | 1 | 3 | |
| Wednesday | $250.43 | 8.67 | 3 | |
| Thursday | $96.12 | 3.67 | 3 | |
| Friday | $149.63 | 5 | 3 | |
| Saturday | $46.62 | 1.33 | 3 | |
| Sunday | $3.04 | 0.67 | 3 |
Kalshi CPI-U index in [month] — 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 —.
CPI-U index in [month] — last 30 days in the archive
Files, size, contracts traded, trades, USD turnover, buy share, quoted spread, top-of-book depth and order-book updates per UTC day, from the recorded tick data.
| UTC day | Files | Size | Traded | Trades | Turnover | Buy share | Avg spread | Top-1 depth | L2 updates | Notes | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-10-21 | 35 | 507 KB | 0 | 0 | $0 | — | — | — | 17.7K | Buy day → | |
| 2026-10-20 | 35 | 588 KB | 0 | 0 | $0 | — | — | — | 21.6K | Buy day → | |
| 2026-10-19 | 35 | 1.85 MB | 0 | 0 | $0 | — | — | — | 72.0K | Buy day → | |
| 2026-10-18 | 35 | 2.99 MB | 1 | 7 | $204.67 | 100 % | 2.67 ¢ | $510.61 | 115.8K | Buy day → | |
| 2026-10-17 | 35 | 490 KB | 2 | 6 | $332.42 | 100 % | 7.50 ¢ | $61.03 | 12.6K | Buy day → | |
| 2026-10-16 | 35 | 2.03 MB | 13 | 77 | $10.7K | 94 % | 16.5 ¢ | $1.1K | 69.3K | Buy day → | |
| 2026-10-15 | 25 | 395 KB | 0 | 0 | $0 | — | — | — | 13.0K | Buy day → | |
| 2026-10-14 | 33 | 767 KB | 3 | 11 | $150.89 | 1 % | 34.3 ¢ | $22.77 | 27.4K | Buy day → | |
| 2026-10-13 | 33 | 276 KB | 4 | 13 | $867.83 | 100 % | 13.8 ¢ | $99.37 | 7.3K | Buy day → | |
| 2026-10-12 | 33 | 307 KB | 0 | 0 | $0 | — | — | — | 6.3K | Buy day → | |
| 2026-10-11 | 33 | 508 KB | 2 | 2 | $9.13 | 0 % | 7.38 ¢ | $56.43 | 13.4K | Buy day → | |
| 2026-10-10 | 33 | 343 KB | 2 | 3 | $112.91 | 88 % | 15.5 ¢ | $57.89 | 8.4K | Buy day → | |
| 2026-10-09 | 33 | 542 KB | 3 | 6 | $214.93 | 46 % | 10.0 ¢ | $52.44 | 14.6K | Buy day → | |
| 2026-10-08 | 33 | 521 KB | 4 | 6 | $190.47 | 53 % | 16.3 ¢ | $120.42 | 15.3K | Buy day → | |
| 2026-10-07 | 33 | 607 KB | 3 | 16 | $137.96 | 54 % | 15.4 ¢ | $576.86 | 17.2K | Buy day → | |
| 2026-10-06 | 33 | 182 KB | 0 | 0 | $0 | — | — | — | 3.2K | Buy day → | |
| 2026-10-05 | 33 | 125 KB | 0 | 0 | $0 | — | — | — | 1.7K | Buy day → | |
| 2026-10-04 | 33 | 403 KB | 0 | 0 | $0 | — | — | — | 6.9K | Buy day → | |
| 2026-10-03 | 33 | 331 KB | 1 | 1 | $26.95 | 0 % | 16.2 ¢ | $4.8K | 7.3K | Buy day → | |
| 2026-10-02 | 33 | 1.02 MB | 3 | 6 | $151.38 | 92 % | 17.6 ¢ | $31.96 | 36.9K | Buy day → | |
| 2026-10-01 | 33 | 658 KB | 3 | 5 | $97.9 | 87 % | 52.5 ¢ | $11.92 | 18.8K | Buy day → | |
| 2026-09-30 | 33 | 49.3 KB | 1 | 1 | $5.83 | 0 % | 19.7 ¢ | $101.96 | 363 | Buy day → | |
| 2026-09-29 | 33 | 112 KB | 0 | 0 | $0 | — | — | — | 2.1K | Buy day → | |
| 2026-09-28 | 33 | 80.5 KB | 0 | 0 | $0 | — | — | — | 1.3K | Buy day → | |
| 2026-09-27 | 33 | 39.0 KB | 0 | 0 | $0 | — | — | — | 91 | Buy day → | |
| 2026-09-26 | 33 | 127 KB | 0 | 0 | $0 | — | — | — | 2.0K | Buy day → | |
| 2026-09-25 | 33 | 160 KB | 1 | 3 | $82.58 | 0 % | 20.8 ¢ | $36.93 | 2.5K | Buy day → | |
| 2026-09-24 | 33 | 169 KB | 0 | 0 | $0 | — | — | — | 3.1K | Buy day → | |
| 2026-09-23 | 33 | 350 KB | 2 | 9 | $607.5 | 69 % | 12.8 ¢ | $914.71 | 9.1K | Buy day → | |
| 2026-09-22 | 33 | 130 KB | 2 | 3 | $199.5 | 0 % | 8.95 ¢ | $72.94 | 2.9K | Buy day → |
Traded = contracts with at least one trade that day. Buy share = taker-buy side of USD turnover. Avg spread = quoted bid-ask spread in contract price cents (0..1 = 100 ¢), weighted by turnover across the day’s contracts. Top-1 depth = mean of the best bid and best ask notional in USD, weighted by turnover. L2 updates = order-book level updates recorded across all contracts of the day. Days captured before the extended statistics show —.
Most traded CPI-U index in [month] contracts by day
The ten contracts with the most USD turnover per UTC day — open, high, low, close, VWAP and the outcome implied by the last print; the six previous days fold out below.
The 1 most traded CPI-U index in [month] contracts on 2026-10-18 — 1 closed Yes (≥ 0.97), 0 closed No (≤ 0.03): 7 trades, $204.67 USD turnover. The busiest contract was KXCPINDEX-26NOV10-T335.300 with $204.67 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXCPINDEX-26NOV10-T335.300 CPINDEX · 2026-11-10 · strike · ABOVE 335.3 | 0.960 | 0.970 | 0.960 | 0.970 | 0.970 | Yes | 7 | $204.67 | 100 % | 2.67 ¢ | $510.61 | 103 | buy file → |
Prices quote 0..1 (probability of Yes). Open/high/low/close/VWAP are that UTC day’s trade prints per contract; the implied outcome reads the last print — ≥ 0.97 as Yes, ≤ 0.03 as No, anything between as still open — venues publish the official result. Buy share = taker-buy side of turnover; spread = the contract's turnover-weighted quoted bid-ask spread in cents, top-1 depth = mean best-bid/ask notional per side, L2 updates = order-book level updates recorded for the contract that day. “Settles” is the venue-listed close time of the contract where the venue publishes one (UTC).
2026-10-17 — 2 contracts, 6 trades, $332.42 turnover
The 2 most traded CPI-U index in [month] contracts on 2026-10-17 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 2 still open at the last print: 6 trades, $332.42 USD turnover. The busiest contract was KXCPINDEX-26NOV10-T336.500 with $265.92 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXCPINDEX-26NOV10-T336.500 CPINDEX · 2026-11-10 · strike · ABOVE 336.5 | 0.890 | 0.950 | 0.890 | 0.950 | 0.950 | open | 5 | $265.92 | 100 % | 7.52 ¢ | $14.79 | 793 | buy file → |
| KXCPINDEX-26NOV10-T336.400 CPINDEX · 2026-11-10 · strike · ABOVE 336.4 | 0.830 | 0.950 | 0.830 | 0.950 | 0.950 | open | 1 | $66.5 | 100 % | 7.38 ¢ | $245.92 | 391 | buy file → |
2026-10-16 — 10 contracts, 71 trades, $10.1K turnover
The 10 most traded CPI-U index in [month] contracts on 2026-10-16 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 10 still open at the last print: 71 trades, $10.1K USD turnover. The busiest contract was KXCPINDEX-26NOV10-T336.300 with $3.0K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXCPINDEX-26NOV10-T336.300 CPINDEX · 2026-11-10 · strike · ABOVE 336.3 | 0.830 | 0.960 | 0.830 | 0.960 | 0.903 | open | 13 | $3.0K | 78 % | 16.5 ¢ | $891.18 | 3.7K | buy file → |
| KXCPINDEX-26NOV10-T335.300 CPINDEX · 2026-11-10 · strike · ABOVE 335.3 | 0.960 | 0.960 | 0.960 | 0.960 | 0.960 | open | 4 | $2.3K | 100 % | 15.6 ¢ | $2.3K | 758 | buy file → |
| KXCPINDEX-26NOV10-T335.900 CPINDEX · 2026-11-10 · strike · ABOVE 335.9 | 0.890 | 0.940 | 0.890 | 0.940 | 0.930 | open | 15 | $1.5K | 100 % | 16.8 ¢ | $467.13 | 5.8K | buy file → |
| KXCPINDEX-26NOV10-T336.500 CPINDEX · 2026-11-10 · strike · ABOVE 336.5 | 0.780 | 0.890 | 0.780 | 0.890 | 0.851 | open | 9 | $829.95 | 100 % | 19.0 ¢ | $114.43 | 5.9K | buy file → |
| KXCPINDEX-26NOV10-T336.100 CPINDEX · 2026-11-10 · strike · ABOVE 336.1 | 0.930 | 0.940 | 0.930 | 0.940 | 0.935 | open | 5 | $536.8 | 100 % | 12.7 ¢ | $1.0K | 3.0K | buy file → |
| KXCPINDEX-26NOV10-T336.600 CPINDEX · 2026-11-10 · strike · ABOVE 336.6 | 0.760 | 0.870 | 0.760 | 0.860 | 0.815 | open | 8 | $496.36 | 99 % | 19.4 ¢ | $171.82 | 4.2K | buy file → |
| KXCPINDEX-26NOV10-T335.800 CPINDEX · 2026-11-10 · strike · ABOVE 335.8 | 0.900 | 0.940 | 0.900 | 0.940 | 0.920 | open | 4 | $478.4 | 100 % | 17.8 ¢ | $314.67 | 5.0K | buy file → |
| KXCPINDEX-26NOV10-T336.200 CPINDEX · 2026-11-10 · strike · ABOVE 336.2 | 0.930 | 0.950 | 0.930 | 0.940 | 0.932 | open | 5 | $387.9 | 100 % | 13.0 ¢ | $917 | 2.7K | buy file → |
| KXCPINDEX-26NOV10-T335.600 CPINDEX · 2026-11-10 · strike · ABOVE 335.6 | 0.940 | 0.950 | 0.940 | 0.950 | 0.949 | open | 5 | $350.43 | 100 % | 16.2 ¢ | $2.8K | 3.1K | buy file → |
| KXCPINDEX-26NOV10-T336.000 CPINDEX · 2026-11-10 · strike · ABOVE 336 | 0.890 | 0.940 | 0.890 | 0.940 | 0.896 | open | 3 | $228.35 | 100 % | 17.5 ¢ | $261.46 | 4.7K | buy file → |
2026-10-14 — 3 contracts, 11 trades, $150.89 turnover
The 3 most traded CPI-U index in [month] contracts on 2026-10-14 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 3 still open at the last print: 11 trades, $150.89 USD turnover. The busiest contract was KXCPINDEX-26OCT14-T336.650 with $81 turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXCPINDEX-26OCT14-T336.650 CPINDEX · 2026-10-14 · strike · ABOVE 336.65 | 2026-10-14 12:30 | 0.550 | 0.550 | 0.540 | 0.540 | 0.540 | open | 1 | $81 | 0 % | 36.4 ¢ | $24.54 | 11.2K | buy file → |
| KXCPINDEX-26OCT14-T336.800 CPINDEX · 2026-10-14 · strike · ABOVE 336.8 | 2026-10-14 12:30 | 0.380 | 0.390 | 0.380 | 0.380 | 0.384 | open | 8 | $67.65 | 0 % | 32.0 ¢ | $21.24 | 6.0K | buy file → |
| KXCPINDEX-26OCT14-T336.700 CPINDEX · 2026-10-14 · strike · ABOVE 336.7 | 2026-10-14 12:30 | 0.450 | 0.480 | 0.320 | 0.480 | 0.373 | open | 2 | $2.24 | 100 % | 24.0 ¢ | $5.28 | 2.7K | buy file → |
2026-10-13 — 4 contracts, 13 trades, $867.83 turnover
The 4 most traded CPI-U index in [month] contracts on 2026-10-13 — 3 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 1 still open at the last print: 13 trades, $867.83 USD turnover. The busiest contract was KXCPINDEX-26OCT14-T336.500 with $372.7 turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXCPINDEX-26OCT14-T336.500 CPINDEX · 2026-10-14 · strike · ABOVE 336.5 | 2026-10-14 12:30 | 0.870 | 0.870 | 0.850 | 0.870 | 0.867 | open | 9 | $372.7 | 100 % | 10.2 ¢ | $80.01 | 445 | buy file → |
| KXCPINDEX-26OCT14-T336.100 CPINDEX · 2026-10-14 · strike · ABOVE 336.1 | 2026-10-14 12:30 | 0.990 | 0.990 | 0.990 | 0.990 | 0.990 | Yes | 1 | $198 | 100 % | 14.7 ¢ | $117.31 | 123 | buy file → |
| KXCPINDEX-26OCT14-T336.250 CPINDEX · 2026-10-14 · strike · ABOVE 336.25 | 2026-10-14 12:30 | 0.990 | 0.990 | 0.990 | 0.990 | 0.990 | Yes | 1 | $198 | 100 % | 18.6 ¢ | $126.23 | 152 | buy file → |
| KXCPINDEX-26OCT14-T336.400 CPINDEX · 2026-10-14 · strike · ABOVE 336.4 | 2026-10-14 12:30 | 0.860 | 0.980 | 0.860 | 0.980 | 0.874 | Yes | 2 | $99.13 | 100 % | 15.5 ¢ | $82.63 | 1.5K | buy file → |
2026-10-11 — 2 contracts, 2 trades, $9.13 turnover
The 2 most traded CPI-U index in [month] contracts on 2026-10-11 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 2 still open at the last print: 2 trades, $9.13 USD turnover. The busiest contract was KXCPINDEX-26OCT14-T336.800 with $8.74 turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXCPINDEX-26OCT14-T336.800 CPINDEX · 2026-10-14 · strike · ABOVE 336.8 | 2026-10-14 12:30 | 0.380 | 0.380 | 0.380 | 0.380 | 0.380 | open | 1 | $8.74 | 0 % | 7.11 ¢ | $57.79 | 865 | buy file → |
| KXCPINDEX-26OCT14-T336.750 CPINDEX · 2026-10-14 · strike · ABOVE 336.75 | 2026-10-14 12:30 | 0.450 | 0.450 | 0.390 | 0.390 | 0.390 | open | 1 | $0.39 | 0 % | 13.5 ¢ | $25.91 | 6.0K | buy file → |
2026-10-10 — 2 contracts, 3 trades, $112.91 turnover
The 2 most traded CPI-U index in [month] contracts on 2026-10-10 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 2 still open at the last print: 3 trades, $112.91 USD turnover. The busiest contract was KXCPINDEX-26OCT14-T336.450 with $98.91 turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXCPINDEX-26OCT14-T336.450 CPINDEX · 2026-10-14 · strike · ABOVE 336.45 | 2026-10-14 12:30 | 0.820 | 0.950 | 0.820 | 0.950 | 0.840 | open | 2 | $98.91 | 100 % | 15.5 ¢ | $32.6 | 1.0K | buy file → |
| KXCPINDEX-26OCT14-T337.000 CPINDEX · 2026-10-14 · strike · ABOVE 337 | 2026-10-14 12:30 | 0.140 | 0.140 | 0.140 | 0.140 | 0.140 | open | 1 | $14 | 0 % | 15.5 ¢ | $236.57 | 225 | buy file → |
How a CPI-U index in [month] contract trades
On Kalshi, a CPI-U index in [month] contract trades until its event settles, is listed roughly 1.6 h before it opens, and quotes in 1 ¢ price steps (0..1). Measured on the 1 contracts captured on 2026-10-18.
Try a CPI-U index in [month] contract file for free
The busiest contract of a settled day, byte-identical to the files in the paid bundle — download the native tick file, a CSV/Parquet export, or replay its order book in the browser.
KXCPINDEX-26OCT14-T336.500 minute by minute — 2026-10-13
One-minute open/high/low/close, trades, USD turnover, quoted spread and top-of-book depth of the sample contract — the same 1-minute statistics every instrument’s analytics page offers.
KXCPINDEX-26OCT14-T336.500 traded in 2 of the day’s minutes (14:52–23:54 UTC): 9 trades, $372.7 turnover, opening at 0.870, ranging 0.850–0.870 and closing at 0.870.
| Minute (UTC) | Open | High | Low | Close | Trades | Turnover | Spread | Top-1 bid / ask |
|---|---|---|---|---|---|---|---|---|
| 14:52 | 0.870 | 0.870 | 0.860 | 0.870 | 2 | $132.11 | 11.0 ¢ | $152.28 / $94.4 |
| 23:54 | 0.870 | 0.870 | 0.850 | 0.870 | 7 | $240.59 | 13.5 ¢ | $26.33 / $15.05 |
1-minute statistics computed from the recorded ticks; minutes without a trade are omitted. Spread in contract price cents; top-1 depth = resting notional at the best bid / best ask. Every minute of every day is in the free analytics; the raw ticks are in the sample file above.
Build a CPI-U index in [month] model on this data
Every CPI-U index in [month] event lists a ladder of strikes — one contract per range — and the rung that settles in the money is the label, so the ladder's prices read as an implied distribution rather than one probability. The day bundle holds the full order-book path and trade tape of every rung, nanosecond-stamped; the statistics on this page cover the most traded contracts per day; the bundle holds every contract listed on Kalshi that day.
Split by release or event day, never at random — every rung of one ladder settles on the same print, so the whole ladder is one example; walk forward over releases. The ladder guide works distribution labels, cross-strike features and the link to the crypto strike grids through.
Purchased data is for your own use — backtesting, research, analytics and training your own models, in-house or in your own products; the trained models and derived data you build from it are yours. The raw files and tick streams themselves may not be redistributed, resold or published. The full terms are on the data license page.
Why buy Kalshi CPI-U index in [month] 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
Kalshi CPI-U index in [month] data — FAQ
What Kalshi CPI-U index in [month] data can I download?
Tick-by-tick trades and Level-2 order-book depth for every contract of the CPI-U index in [month] series on Kalshi (35 contract files on the latest day). One bundle = one UTC day of the whole series.
What is the Kalshi series ticker for CPI-U index in [month]?
KXCPINDEX — every contract of the series carries this prefix in its ticker (followed by the event date and strike). Files in a day bundle are named by the full contract ticker, so a bundle holds every KXCPINDEX-* contract listed that UTC day.
How far back does the CPI-U index in [month] data go?
Coverage runs July 2026 – present — 105 trading days in total.
What format are the Kalshi files in?
One zstd-compressed text file per contract per UTC day, in the same normalized schema as our crypto venues — see the market-data specification; free samples on the downloads page.
Can I get Kalshi CPI-U index in [month] 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 Kalshi CPI-U index in [month] historical data cost?
€1 per series-day bundle — every contract of the series for that day — no subscription, no minimum order; buy as a guest in the Data Shop and download immediately. Credit packs lower the effective price and never expire.
Do I need an account or a sales call?
No. Pick the CPI-U index in [month] 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 Kalshi CPI-U index in [month] 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.
How many CPI-U index in [month] contracts trade per day on Kalshi?
On average 1 CPI-U index in [month] contracts had at least one trade per UTC day over the last 21 captured days on Kalshi, with about 8.3K order-book level updates recorded per day. A day bundle contains every contract file of the series for that day.
How liquid are Kalshi CPI-U index in [month] contracts?
Over the last 21 captured days, the turnover-weighted quoted bid-ask spread was 15.7 ¢ (contracts quote 0..1 = 100 ¢), the mean best-bid/best-ask notional was about $452.3 per side, 55 % of USD turnover was taker-buy. These figures are computed from the recorded Level-2 order books and trade prints — the same data in the day bundles.
What was the most traded CPI-U index in [month] contract on 2026-10-18?
KXCPINDEX-26NOV10-T335.300 (CPINDEX · 2026-11-10 · strike · ABOVE 335.3) — $204.67 USD turnover over 7 trades on Kalshi. The 1 most traded contracts of the series did 7 trades and $204.67 that UTC day. Open, high, low, close and VWAP per contract are listed on this page; the tick-level data is in the day bundle.
What was the busiest CPI-U index in [month] trading day on Kalshi?
2026-10-13, with $867.83 of USD turnover over 13 trades across every CPI-U index in [month] contract of the day; the busiest full month was Sep 2026 at $895.41. Since our statistics began on 2026-09-22 the series has recorded 74 trades and $2.7K over 22 captured days; the single biggest contract was KXCPINDEX-26OCT14-T336.400 (CPINDEX · 2026-10-14 · strike · ABOVE 336.4) on 2026-09-23 with $418.5. Any of these days is a downloadable bundle.
Which weekday does Kalshi CPI-U index in [month] trade most?
Wednesdays — about $250.43 of USD turnover per Wednesday and 41 % of the series' turnover over the 21 captured days to 2026-10-12 on Kalshi, summed from every trade print of the series' contracts. The weekday profile on this page shows all seven days; the day bundles carry the full tape behind them.